Exhaust System Discussion

I've recently upgraded my exhaust system to an Akrapovic Evolution and I'm thoroughly impressed with the sound and performance gains. The system is very well built and the installation was relatively straightforward. Would highly recommend this upgrade for any serious BMW enthusiast.

I've been considering upgrading my BMW's exhaust system but I'm not sure if it'll make a noticeable difference in performance or just add some extra noise. Has anyone else done this and what were your results?

I'm interested in hearing others opinions on the stock exhaust system of the M4. I've recently added an aftermarket cat-back system and noticed some notable improvements in terms of sound and power delivery. Has anyone else experienced similar results?

I've been noticing that my 328i's exhaust note sounds slightly muted compared to when it was still under warranty. Has anyone else experienced this or is there a specific modification that can help restore the original sound and performance of the system?

I've been reading that the M Performance exhaust system on my BMW M4 has a noticeable sound increase under hard acceleration but also adds a few decibels of noise to normal driving. Is this typical for this exhaust system?

I've been looking into upgrading my E90 M3's exhaust system and I'm torn between the Akrapovic Evolution Line and the Milltek Sport Catback. Both systems seem to be well-regarded in the community, but I'm having a hard time deciding which one is worth the investment. The Akrapovic system seems to offer better high-rpm performance and a more aggressive sound, but it's also significantly more expensive than the Milltek setup. On the other hand, the Milltek Sport Catback looks like a great value for the money, with a similar sound profile to the Akrapovic but without breaking the bank. Has anyone else had experience with either of these systems? Are there any notable differences in terms of performance or durability that I should be aware of before making my decision?

I've had my fair share of exhaust system upgrades on my BMW 335i. Currently running a high-flow cat-back system and I'm loving the sound it produces. The only downside is that I noticed a slight dip in fuel efficiency but it's worth it for me since I drive aggressively most of the time. Has anyone else tried similar setups?

I've been researching exhaust system upgrades for my E90 M3 and was wondering if anyone has had experience with Akrapovic or Milltek systems. I'm looking for a balance of performance gain and noise level. Any input would be greatly appreciated!

I've always been impressed by the M3's dual-pipe exhaust system - it gives the car that unmistakable sound. Anyone have experience with aftermarket systems like Akrapovic or Milltek? How do they compare to the stock setup in terms of performance and noise level?

I've been experiencing some issues with my M3's exhaust system lately. The car has around 60k miles on it and I recently noticed a slight hesitation in acceleration when shifting into higher gears. I suspected it might be related to the exhaust system so I took a closer look. Upon inspection, I found that the downpipe had developed some rust and was causing the restriction. I've replaced it with a high-flow unit from Dinan and it's made a noticeable difference in power delivery. Has anyone else on here experienced similar issues or have any recommendations for improving the exhaust system on their BMW?

I'm not a huge fan of the standard exhaust system on my 328i, but I've heard great things about the Akrapovic system. Has anyone else tried it out? I did some research and it seems like it gives a nice boost in power and improves the overall sound of the engine. However, it's also quite pricey, with prices ranging from around $2,000 to over $3,500 depending on the specific model and configuration. Does anyone know if there are any other options out there that might be more budget-friendly? I'm not looking for a full-on exhaust system overhaul, just something to give my car a bit more personality.

I recently installed an Akrapovic Evolution exhaust system on my M4 and I must say it's a night and day difference in terms of sound and performance. The louder, more aggressive tone is exactly what I was looking for!

I've upgraded to a Borla exhaust system on my E90 M3 and noticed a significant improvement in sound quality and a slight gain in horsepower due to the reduced backpressure. The sound is deep and aggressive when accelerating but quiet at cruising speeds. Very satisfied with the purchase!

I've been running my E90 M3 with a Milltek exhaust system and I'm really impressed with the sound it produces. It's not too loud but definitely noticeable. The only thing that would be nice is if they made a more aggressive tip to match the car's aggressive styling. Has anyone else tried this exhaust or have any recommendations for something similar?

I'm curious to hear from owners of the M3 with the free-flowing exhaust system. Does it make a noticeable difference in terms of power output or just provide a more aggressive sound?

I've been considering upgrading my exhaust system on my E90 335i. I'm torn between the factory SULEV system and the Akrapovic Evolution Line. I'd love to hear from others who have experience with either of these systems. Has anyone noticed a significant increase in power or improvement in sound quality? Are there any other factors to consider when choosing an exhaust system, such as durability or potential impact on the car's emissions?

I've been running my E90 M3 with an Akrapovic Evolution exhaust system and I'm impressed by the sound and power gain. Has anyone else tried this setup on their BMW? What are your thoughts on the performance and durability of the exhaust system?

I'm curious to hear from owners who have upgraded their exhaust system on BMWs. I've heard that some aftermarket systems can give a noticeable performance boost, but may also be louder than stock. Has anyone tried a high-flow cat-back system or a straight-pipe setup? How did it affect the overall driving experience and sound level?

I've been doing some research on exhaust systems for my upcoming E90 M3 project. I'm planning to upgrade from the standard system to a high-flow cat-back setup and was wondering if anyone has experience with this type of modification. Specifically, I'd like to know if there are any notable differences in performance or sound level between different manufacturers such as Akrapovic, Borla, or Milltek. Have any owners noticed significant gains in horsepower or torque after making the switch? Additionally, are there any specific tips for installation and tuning that would be helpful to know?

I've been looking into upgrading my E90 M3's exhaust system and I'm curious to hear from others who have made the change. I've seen a lot of aftermarket options available, but I'm not sure which one is worth the investment. Has anyone tried the Akrapovic or the Milltek options? What were your experiences with them? Was it a noticeable improvement in sound and performance? Any advice or recommendations would be great, thanks!

I've recently upgraded my 335i to a high-flow performance exhaust system and I'm blown away by the sound and power increase. The difference is night and day, would highly recommend this upgrade to anyone looking for an extra boost of performance.

I've been looking into upgrading my 335i's exhaust system and I'm considering the Akrapovic Evolution Line. Has anyone had experience with this setup? I'd love to hear about your experiences with it in terms of sound, performance and durability.

I've recently upgraded my BMW M3's exhaust system to a high-performance aftermarket unit and I have to say it makes a huge difference in the sound and power delivery of the car. The new system gives me an additional 10-15 horsepower and the sound is incredibly sporty and aggressive, exactly what I was looking for. One thing to note though, is that the increased noise level may not be suitable for everyone, especially those who prefer a more subtle exhaust tone. Additionally, I've found that the new system has a slightly higher backpressure than the stock unit which affects the car's mid-range power delivery. Overall, I'm extremely happy with the upgrade and would highly recommend it to any M3 owner looking to take their car to the next level. Has anyone else made similar upgrades to their exhaust systems? What were your experiences like?

I've been experiencing some issues with my X5's exhaust system lately. The sound is louder than usual on the highway and I'm worried it might be causing engine damage. Has anyone else had similar problems or know of a good solution?

I've been thinking of upgrading my exhaust system on my 2018 M3 Competition Package. I currently have the standard sport exhaust system but I'm not entirely satisfied with the sound and performance it provides. After doing some research, I came across a few aftermarket options such as the Akrapovic Evolution Line system and the Borla S-Type system. The main reason for me wanting to upgrade is to get a more aggressive exhaust note that matches the performance capabilities of my vehicle. I've heard that both the Akrapovic and Borla systems can provide a noticeable improvement in sound, but also offer some performance gains due to their light weight design. Does anyone have experience with either of these systems? How do they compare in terms of sound quality and overall performance? Are there any other aftermarket options I should consider?

I've had issues with the secondary air injection system on my X5. The sensor was faulty and caused a CEL to appear. Replaced it and the problem went away, no more annoying warning lights. Has anyone else experienced this issue?

I've recently upgraded to a high-performance exhaust system on my BMW M3, and I'm thoroughly impressed with the sound it produces - deep and sporty, but not overly loud. The added power delivery is also noticeable, making everyday driving even more enjoyable.

I've been looking into upgrading my M3's exhaust system and I'm curious to hear from those who have experience with aftermarket systems. Specifically, has anyone had success with a high-flow rear muffler or a full cat-back setup? I've heard mixed reviews about the Akrapovic system, are there any notable differences between their various models?

I've recently upgraded to an Akrapovic Evolution exhaust system on my E90 M3 and I'm thoroughly impressed with the sound quality and slight power gains, worth every penny for a true driving enthusiast like myself.

I've owned my M3 for three years now and I've noticed a significant improvement in performance after switching to a high-flow catalytic converter. Definitely worth considering if you're looking to squeeze out some extra power.

I've just had my 135i's cat-back exhaust replaced with an Akrapovic system and I have to say it makes a huge difference in the sound and performance of the car. Definitely worth considering for anyone looking to upgrade their exhaust!

I've been experiencing some issues with my 2015 M3's exhaust system. The car is equipped with the standard sport exhaust, but I've noticed a slight vibration when accelerating at low RPMs. At first, I thought it might be related to the muffler or resonator, but after doing some research and consulting with other owners, it seems that this could be a sign of a faulty catalytic converter. Has anyone else experienced similar issues? Have you had any success in replacing the CAT without voiding your warranty (I'm still under the 50k mile mark)? Would love to hear any experiences or advice from fellow BMW enthusiasts!

I've been researching the new M4 exhaust system and I'm curious to know if anyone has upgraded to it? Are there any noticeable improvements in sound or performance compared to the stock system?