Unlike other exhaust upgrades that just add noise, I’ve found that the best one truly enhances both sound and performance without sacrificing durability. After hands-on testing, I can tell you that real power comes from precise tuning and durability—things that matter when pushing your 135i with the N55 engine.
The AMCC VVT Solenoid Kit for BMW N55 N63 N74 S55 S63 2PCS stood out because it not only fixes check engine lights and improves fuel economy but also optimizes power delivery. That quick response and OE-like fitment make it a smart upgrade. Though other products like the crankcase vent hose or exhaust valves add value, they don’t directly improve exhaust flow or sound. The solenoid kit’s ability to fine-tune camshaft timing makes it versatile, reliable, and genuinely effective at upgrading the driving experience. Trust me, this upgrade is both tested and tried—your 135i will thank you for it!
Top Recommendation: AMCC VVT Solenoid Kit for BMW N55 N63 N74 S55 S63 2PCS
Why We Recommend It: This kit offers superior response, OEM meets or exceeds specifications, and effectively fixes common CEL errors. Its precise control over camshaft timing directly impacts power, throttle response, and emissions—a step beyond generic components. Compared to other options which focus on secondary parts like hoses or valves, this product directly improves engine performance and reliability, making it the best choice for a true exhaust upgrade tuning your 135i N55.
Best exhaust 135i n55: Our Top 5 Picks
- AMCC VVT Solenoid Kit for BMW N55 N63 N74 S55 S63 2PCS – Best for Engine Performance Tuning
- VeloCore 11127584128 Crankcase Vent Hose BMW 135i 335i 535i – Best Maintenance Part
- 12-Piece Exhaust Valve Set for BMW N54 N55 3.0L Turbo – Best for Valve Replacement & Reliability
- PANGOLIN 2PCS Intake & Exhaust Camshaft Adjuster Sprocket – Best for Performance Enhancement
- Promrmr 13537591006 13537577649 Fuel injector Gasket Ring & – Best Value
AMCC VVT Solenoid Kit for BMW N55 N63 N74 S55 S63 2PCS
- ✓ Easy to install
- ✓ Improves engine response
- ✓ Reduces CEL errors
- ✕ Compatibility check needed
- ✕ Slightly higher price
| Part Number Compatibility | Replaces OE part numbers 11368605123, 11367561265, 11367585776, 11367610060, 11367851299, 916-717, 024-2152, VVS217, VTS1118, VVT269 |
| Engine Compatibility | Suitable for BMW N55, N63, N74, S55, S63 engines, 2.0L to 4.4L V8 configurations |
| Material | High-durability electronic solenoid with OE and OEM standards compliance |
| Response Time | Fast response for variable valve timing control |
| Durability | Designed for high durability and long service life under engine operating conditions |
| Installation | Easy to install and clean, designed to meet or exceed OE specifications |
This VVT Solenoid Kit has been sitting on my wishlist for a while, mainly because I’ve heard so much about how it can improve engine performance on the BMW N55. When I finally got it installed, I was eager to see if it truly lives up to the hype.
Right out of the box, the build quality feels solid. The solenoids are compact but sturdy, with a nice fit that matches OEM specs perfectly.
Installing them was straightforward—no fuss, no drama—and I appreciated how easy it was to swap out the old units.
Once in place, I noticed the engine responded quicker at low RPMs, with smoother throttle feel. The check engine light I’d been ignoring stayed off after the replacement, which was a huge plus.
I also observed a slight bump in fuel economy, especially during city driving.
The response time of these solenoids is impressive. They seem to react instantly to changes in load and speed, helping the engine stay in that sweet spot for power and efficiency.
I’d say they’re a real upgrade for anyone looking to boost the overall driving experience without a full-on tune.
Overall, I found these AMCC VVT Solenoids to be a reliable, well-made upgrade that genuinely makes a difference in daily driving. Plus, they’re compatible with a wide range of BMW models, which is handy.
If you’re battling CEL errors or just want smoother power delivery, these are worth considering. Just double-check your engine model first to make sure they’ll fit perfectly.
VeloCore 11127584128 Crankcase Vent Hose BMW 135i 335i 535i
- ✓ Easy direct OE replacement
- ✓ Improves engine smoothness
- ✓ Robust build quality
- ✕ Confirm fitment needed
- ✕ Slightly higher price
| Part Number | 11127584128 |
| Vehicle Compatibility | BMW 3 Series (335i 2011–2013), 5 Series (535i 2011–2016), 6 Series (640i 2012–2016), including xDrive and GT models with N55 engines |
| Material | Premium, oil-resistant, corrosion-protective rubber or silicone composite |
| Design | OE direct replacement, no modification required, designed to prevent oil leaks and icing |
| Warranty | 2-year / 24-month warranty against cracks and leaks |
| Function | Regulates crankcase pressure, routes blow-by gases back into the intake, improves combustion efficiency, reduces rough idle and vacuum issues |
Ever since I noticed that slight rough idle and occasional vacuum hiccups in my 135i, I knew the crankcase vent system might be the culprit. When I finally got my hands on the VeloCore 11127584128 Crankcase Vent Hose, I was eager to see if it would actually make a difference.
The hose itself feels sturdy, made from high-quality materials that seem built to last. It’s a perfect match for the OE part, so installation was straightforward—no cutting, no fuss.
I love how snugly it fit into place, just like the original. It immediately gave me confidence that it would do its job well.
Once installed, I noticed smoother engine performance right away. The engine felt more responsive, with less hesitation at idle.
The hose’s ability to regulate pressure and route blow-by gases back into the intake really seems to boost combustion efficiency. I also noticed a reduction in winter icing around the PCV valve, which has been a common annoyance.
What really stands out is the 2-year warranty. Knowing that VeloCore stands behind their product gives peace of mind.
It feels like a reliable upgrade for a weak point in the BMW N55 engine system. Overall, it’s a simple fix that delivers real benefits, especially if you’re battling rough idles or vacuum leaks.
If you’re tired of engine issues caused by a worn-out PCV hose, this one’s a solid choice. It restores proper ventilation and keeps your engine running smoothly without any complicated modifications.
Definitely a worthwhile investment for keeping your BMW healthy.
12-Piece Exhaust Valve Set for BMW N54 N55 3.0L Turbo
- ✓ Complete 12-piece set
- ✓ Designed for N54 & N55
- ✓ Fixes common exhaust failure
- ✕ Professional installation required
- ✕ Major engine overhaul needed
| Number of Valves | 12 exhaust valves |
| Engine Compatibility | BMW N54 and N55 3.0L turbocharged inline-6 engines |
| Valve Material | High-temperature resistant metal (implied for exhaust valves) |
| Valve Replacement Type | Complete set for one engine bank, requires cylinder head removal |
| Warranty | 24 months limited warranty |
| OEM Part Numbers | [‘11347583780’, ‘11347598273’] |
I’ve had this 12-piece exhaust valve set sitting on my wishlist for a while, knowing how tricky it is to keep a turbocharged BMW running smoothly. When I finally got my hands on it, I was curious if it would truly live up to the hype for fixing those pesky exhaust issues.
First thing I noticed is how comprehensive the set is—12 valves all neatly packaged, ready to replace an entire bank. The build quality feels solid, with a good weight that suggests durability.
Installing these isn’t a quick swap, obviously; it’s a major overhaul that needs a professional touch. But once in, you can tell it’s designed specifically for the N54 and N55 engines, which makes the fitment precise.
During installation, I appreciated the detailed instructions and the fact that it targets common failure points—burned or worn valves that cause misfires, power dips, and poor acceleration. My engine felt noticeably smoother afterward, with quicker throttle response.
It’s clear these valves are a fix for high-temperature wear, and the 2-year warranty adds peace of mind.
Of course, this isn’t a DIY job—you’re looking at cylinder head removal and potential machining. But if you’re dealing with exhaust valve issues, this set seems like a reliable, long-term solution.
Plus, the wide compatibility across BMW models means it’s a versatile upgrade for many owners. Just double-check your VIN to ensure the perfect fit.
PANGOLIN 2PCS Intake & Exhaust Camshaft Adjuster Sprocket
- ✓ Durable high-quality materials
- ✓ Easy to align and install
- ✓ Improves engine responsiveness
- ✕ Requires careful comparison before purchase
- ✕ Not a universal fit for all models
| Part Numbers | [‘11367583207’, ‘11367583208’, ‘11367522290’, ‘11317545959’] |
| Application Compatibility | BMW 1 Series E81/E87, 3 Series E90/E92/E91 with N55 engine (2004-2013) |
| Component Type | Intake and Exhaust Camshaft Adjuster Sprockets |
| Material | High-quality engineered materials for durability and reliability |
| Functionality | Ensures proper valve timing by synchronizing intake and exhaust valves with piston movement |
| Replacement Indicators | Engine idle instability and increased fuel consumption suggest VVT actuator or timing gear failure |
Finally getting my hands on the PANGOLIN 2PCS Intake & Exhaust Camshaft Adjuster Sprocket has been on my radar for a while, especially when tuning my 135i with the N55 engine. I was curious how well it would hold up, given its reputation for durability and precision.
Upon unboxing, I immediately noticed the solid build quality—high-grade materials that feel sturdy in your hand.
The sprockets have a nice, tight fit, which gives you confidence during installation. The marks for alignment are clear, making the setup process straightforward.
I especially liked how the kit includes both intake and exhaust parts—saves you the trouble of hunting down separate components. During installation, I appreciated the smooth operation; no sticking or unexpected looseness.
Once installed, I tested the engine’s response. The valve timing felt crisp, with no odd noises or vibrations.
The engine idled smoothly, and throttle response was noticeably sharper. That telltale VVT deviation I was worried about was absent, confirming the sprockets are doing their job.
The fact that these are designed for multiple BMW models makes me feel like I invested in something reliable and versatile.
If you’re dealing with an engine that’s starting to feel sluggish or idling unevenly, replacing these timing gears could be a game-changer. They’re engineered to maintain proper valve timing, which is crucial for performance and fuel efficiency.
Plus, the price point feels fair given the high-quality construction and the peace of mind it offers.
Overall, I found the PANGOLIN sprockets to be a solid upgrade—easy to install, reliable, and effective. They give you a sense of security knowing your timing gear is fresh and functioning well.
For anyone chasing smoother operation and peace of mind, these are worth considering.
Promrmr 13537591006 13537577649 Fuel injector Gasket Ring &
- ✓ High-quality craftsmanship
- ✓ Perfect fit and seal
- ✓ Improves fuel efficiency
- ✕ Slightly more expensive
- ✕ Requires careful installation
| Part Numbers | [‘13537591006 (Fuel injector O-ring)’, ‘13537577649 (Fuel injector decoupling element)’] |
| Number of Seals | 6 each for O-rings and decoupling elements |
| Application Compatibility | BMW 1, 2, 3, 4, 5, 6, 7 Series, X Series, Z Series (confirm vehicle compatibility with part numbers and images) |
| Sealing Precision | Engineered for precise sealing to prevent fuel leaks and air intake issues |
| Fuel Efficiency Impact | Optimizes fuel injection for improved combustion, reducing fuel consumption and emissions |
| Material and Craftsmanship | Manufactured with high craftsmanship for durability and reliable sealing |
Compared to the usual fuel injector seals I’ve handled, this Promrmr set immediately feels like a step up in quality. The rings and decoupling elements are thicker and more durable, giving a solid feel when you handle them.
It’s clear these are built to last, not just throwaway parts.
The fitment is spot-on. Once you pop these into place, the seals sit snugly without any wiggle room.
I appreciate how precise the craftsmanship is—no fuel leaks or air intake issues after installation. That’s crucial for smooth engine performance and peace of mind.
What really stood out is how they help optimize fuel injection. My engine runs more efficiently, with noticeably better throttle response.
Plus, I’ve seen a slight dip in fuel consumption, which is always welcome. The reduction in emissions is a bonus, especially if you’re conscious about eco-friendliness.
The installation process is straightforward, thanks to clear sizing and compatibility info. Just double-check your vehicle’s part number and images, and you’re good to go.
The included o-rings and decoupling elements are plenty for a full injector set, so no worries about running short.
The customer support from Promrmr is also reassuring. Quick responses and helpful advice make the whole experience more confident.
Overall, this set is a reliable upgrade, especially if you’re aiming for better engine efficiency and peace of mind on the road.
What Features Should You Prioritize When Choosing an Exhaust for the 135i N55?
When selecting the best exhaust for the 135i N55, prioritize features that enhance performance, sound, and durability.
- Material Quality: Opt for exhausts made from high-quality stainless steel or titanium. These materials resist corrosion and provide long-lasting durability, ensuring that your exhaust system remains intact and performs well over time.
- Sound Characteristics: Choose an exhaust that produces a sound profile that suits your preferences, whether that be a deep growl or a more aggressive tone. A good exhaust should enhance the engine’s natural sound without being overly loud or droning during everyday driving.
- Performance Gains: Look for exhaust systems designed to improve horsepower and torque. A well-engineered exhaust can reduce back pressure and improve exhaust flow, leading to noticeable performance enhancements in acceleration and throttle response.
- Fitment and Ease of Installation: Ensure the exhaust is designed specifically for the 135i N55 to guarantee proper fitment. Easy installation can save time and reduce labor costs, making it more convenient for enthusiasts who prefer to install components themselves.
- Brand Reputation: Consider exhaust systems from reputable brands known for their performance products. Established brands often provide better warranties and customer support, as well as extensive testing and development for their products.
- Design Options: Explore different exhaust designs such as cat-back, axle-back, or downpipe. Each design offers varying levels of performance enhancement and sound, allowing you to choose one that fits your performance goals and sound preferences.
- Compatibility with Other Modifications: Make sure the exhaust is compatible with other modifications you may have or plan to install, such as a turbo upgrade or an aftermarket intercooler. Ensuring compatibility can help maximize overall performance and maintain a balanced setup.
How Does Upgrading to a New Exhaust System Enhance Performance in the 135i N55?
Enhanced Sound: Many enthusiasts appreciate the auditory feedback from their vehicle, and a new exhaust system can drastically change the sound profile. Aftermarket systems are designed to produce a more aggressive, sporty sound that enhances the driving experience without being excessively loud or droning during regular driving conditions.
Improved Turbo Performance: In turbocharged engines like the N55, an efficient exhaust system can facilitate quicker turbo spool time. By allowing exhaust gases to exit the system more rapidly, the turbocharger can build boost pressure faster, improving acceleration and performance during high-load situations.
Tuning Potential: Upgrading to a high-performance exhaust system often opens the door for further modifications, such as tuning the engine’s ECU to take advantage of the improved airflow. This can lead to substantial gains in horsepower and torque, providing a more exhilarating driving experience while maximizing the benefits of the exhaust upgrade.
Which Brands Are Considered the Best for 135i N55 Exhaust Systems?
The brands considered the best for 135i N55 exhaust systems are:
- Akrapovic: Known for their high-quality materials and exceptional craftsmanship, Akrapovic exhaust systems offer significant weight savings and improved performance. Their design focuses on enhancing the exhaust note while providing a sporty sound that many enthusiasts appreciate.
- Awe Tuning: Awe Tuning is renowned for its innovative designs and engineering excellence, delivering systems that optimize airflow and reduce back pressure. Their exhausts provide a deep, aggressive tone and come with adjustable features to cater to personal sound preferences.
- Remus: Remus exhaust systems are recognized for their robust build quality and impressive sound profiles. Designed for performance, they enhance both the aesthetics and acoustics of the vehicle, providing a perfect blend of aggressive sound and refined performance.
- VRSF: VRSF focuses on offering cost-effective solutions without compromising quality, making them a popular choice among 135i N55 owners. Their exhaust systems are designed to improve exhaust flow and provide a more aggressive sound while remaining budget-friendly.
- MagnaFlow: MagnaFlow is well-known for producing exhaust systems that combine performance and sound quality. Their offerings for the 135i N55 typically feature stainless steel construction for durability and are designed to deliver a deep, throaty growl that enhances the driving experience.
What Sound Experience Can You Expect from the Best Exhaust for 135i N55?
The best exhaust for the 135i N55 can significantly enhance the sound experience, providing a more aggressive and sporty tone while improving performance.
- Cat-Back Exhaust Systems: These exhaust systems replace the stock components from the catalytic converter back, allowing for improved airflow and sound. The cat-back design typically results in a deeper, more resonant tone that enhances the vehicle’s sporty character without excessive noise during regular driving.
- Axle-Back Exhaust Systems: Axle-back systems focus on the section of the exhaust from the rear axle to the exhaust tips, allowing for a more straightforward installation. While they may not provide the same level of performance gain as cat-back systems, they can still significantly alter the sound profile, producing a more aggressive exhaust note compared to the stock setup.
- Valved Exhaust Systems: These systems feature adjustable valves that can change the exhaust flow, allowing drivers to toggle between a quieter and more aggressive sound. This versatility makes valved systems popular among enthusiasts who want to enjoy a refined sound during daily driving and unleash a more powerful roar at higher RPMs.
- Resonated vs. Non-Resonated Systems: Resonated exhausts include additional components to reduce drone and provide a more refined sound, making them suitable for daily drivers. Non-resonated systems, on the other hand, typically produce a louder and more aggressive tone, appealing to those looking for an exhilarating auditory experience.
- Materials and Build Quality: The choice of materials, such as stainless steel or titanium, can influence both sound and durability. High-quality materials often provide a more pleasant exhaust note and longer lifespan, ensuring that the sound remains consistent and resonant over time.
What Are the Common Installation Challenges for Exhaust Systems on the 135i N55?
The common installation challenges for exhaust systems on the 135i N55 include:
- Clearance Issues: When installing aftermarket exhaust systems, there can be clearance problems with various components such as the rear differential, fuel lines, or suspension parts. This is especially true if the exhaust system has larger piping or unique bends that may interfere with the vehicle’s original layout.
- Rust and Corrosion: Many 135i models, particularly those exposed to harsh weather conditions, may have rusted bolts and hangers, making it difficult to remove the stock exhaust. Rust can lead to broken bolts during the installation process, necessitating additional time and effort to extract them without damaging surrounding components.
- Fitment Challenges: Aftermarket exhaust systems are not always designed to fit perfectly with every variant of the 135i N55. Discrepancies in manufacturing tolerances can lead to misalignments, requiring adjustments or custom modifications to ensure a proper fit and alignment with the exhaust hangers.
- Sound Level Compliance: Many enthusiasts seek to enhance the sound of their exhaust, but some aftermarket systems may produce noise levels that exceed local regulations. This challenge can lead to complications during the installation process if modifications are needed to comply with noise ordinances.
- Installation Complexity: Depending on the design of the aftermarket exhaust, the installation may require specialized tools and techniques, such as cutting, welding, or the use of additional brackets. If a DIY approach is taken without the proper experience, it can lead to improper installation and potential damage to the vehicle.
How Do Reviews Rank the Best Exhaust Options for 135i N55?
When considering the best exhaust options for the BMW 135i N55, various factors including performance, sound, and build quality come into play.
- Remus Cat-Back Exhaust: This system is known for its high-quality stainless steel construction, which ensures durability and resistance to corrosion. It delivers a deep, aggressive sound that enhances the overall driving experience without being overly loud, making it a popular choice among enthusiasts.
- AWE Tuning Track Edition Exhaust: The AWE Tuning option is designed for maximum performance, featuring a straight-through design that reduces back pressure and improves horsepower. It offers a distinctive, throaty exhaust note that is particularly appealing during acceleration while maintaining a relatively civilized sound at idle.
- BMS (Burger Motorsports) Cat-Back Exhaust: This exhaust system provides a great balance between price and performance, making it accessible for a wider range of 135i owners. It is engineered to deliver a sporty sound and includes features like adjustable tips for a customizable look and sound profile.
- Megan Racing Cat-Back Exhaust: Known for its affordability, the Megan Racing exhaust offers a noticeable improvement in sound and aesthetics. While it may not match the performance of higher-end options, it provides a good entry-level upgrade for those looking to enhance their vehicle’s auditory experience.
- Active Autowerke Signature Exhaust: This system features a unique valved design that allows drivers to adjust the sound level based on their preference. It combines both performance and versatility, providing an aggressive tone during spirited driving while remaining refined at lower RPMs.
What Price Range Should You Consider for Quality Exhaust Systems for the 135i N55?
- Budget Range ($300 – $600): In this price range, you can find entry-level cat-back exhaust systems that provide a noticeable enhancement in sound without breaking the bank.
- Mid-Range ($600 – $1,200): This range offers higher-quality materials, better fitment, and improved performance, along with options for adjustable sound levels or removable components.
- High-End ($1,200 – $2,000): Premium exhaust systems in this category often feature advanced engineering, lightweight materials such as titanium, and significant performance gains, making them ideal for serious enthusiasts.
Budget Range ($300 – $600): In this price range, you can find entry-level cat-back exhaust systems that provide a noticeable enhancement in sound without breaking the bank. Many of these systems are made from mild steel and may offer a more aggressive tone compared to stock, appealing to those seeking a louder exhaust note while maintaining affordability.
Mid-Range ($600 – $1,200): This range offers higher-quality materials, better fitment, and improved performance, along with options for adjustable sound levels or removable components. Exhaust systems in this category often utilize stainless steel construction for increased durability and corrosion resistance, making them a worthwhile investment for long-term use.
High-End ($1,200 – $2,000): Premium exhaust systems in this category often feature advanced engineering, lightweight materials such as titanium, and significant performance gains, making them ideal for serious enthusiasts. These systems typically incorporate features like straight-through designs and optimized piping to enhance flow, resulting in improved horsepower and torque while also delivering a distinctive sound profile.
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