

Replaces the restrictive and redundant secondary catalytic converters with a free-flowing x-pipe which increases power and sound. Available with or without resonators for additional weight savings.
SOUND:
With the resonated x-pipe expect a significant increase in volume with a more aggressive tone. In non-resonated form it's much more aggressive with a very sharp signature M3 tone. Non-resonated is very loud.
POWER:
On our DynoJet we saw consistent gains across the entire powerband. Max gains were 15 whp and 8 ft/lbs of tq.
FEATURES:
DISCLAIMER: This product removes the OEM catalytic converters from the vehicle, and as such, is strictly intended for closed track events and off-road use only, never to be driven on public roads. This product is or contains a Racing Cat Bypass Pipe, which will give you check engine lights on OBD2 cars. Racing Cat Bypass Pipes are solely intended for track and race cars as they are NOT California Air Resources Board Certified (CARB) and not EPA certified. You are hereby informed and warned to check your local, state, and federal laws before buying and installing these or any aftermarket parts to be sure whether usage is in violation. All installation-risk and use-risk is borne by the end-user and installer of these parts.
Purchase Disclaimer: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls.
Last week I had a Fabspeed x-pipe installed on my M3 and I made 20whp, which is very impressive given I had stock mufflers at the time. At idle my car sounded the same as stock; on the gas the Fabspeed x-pipe came to life.
I am very pleased with my new Fabspeed X pipe for my E93. I had the car dynoed bone stock and then with the fab speed pipe and air filter. I gained 21 HP and 18 FPT over stock and it was 20 degrees warmer the day of the test. It looks like I gained 15 HP from the X pipe and 6 from the filter. The sound of the pipe is great with the stock muffler. It's more aggressive when you step on it but not much louder than stock at idle. The combo of the exhaust and air filter makes the car feel like its taking in more air; making it sound great.