These Test Pipes are no longer available. The only purpose for these pipes is to delete the primary cats. These Test Pipes (also known as Track Pipes) delete primary cats but leave the rest of the factory exhaust intact. For real track/race cars the better solution is our BimmerWorld Racing X-Pipe.
A true racing exhaust is lighter and flows better and allows an easy switch back to stock at any time.
The E9X M3 uses two sets of catalytic converters - a primary pair just after the headers and a secondary set further along the exhaust. The front primaries are so restrictive that deleting them gives an instant 20hp/20ft-lbs gain with no other modifications. Deleting the entire cat section - all four cats - gives even more power and sound without other changes: 34hp/29ft-lbs. Any change to the factory cats is not legal for street use.
These MS Test Pipes install by cutting off the original factory primary cats and clamping the new straight pipes in place. They fit to the stock header flanges and use the original crush gaskets. You can reinstall the original primary cats at any time using the same exhaust clamp. All four factory oxygen sensors reinstall in the original locations.
Macht Schnell Bypass Track Pipe features:
Notice of Emissions Non-Compliance.
- Full stainless steel construction, with mandrel bends for optimum flow
- Straight shot design for zero restriction and high velocity
- Gains as high as 20hp/20lb-ft of torque recorded on dyno with no aftermarket software used
- Retains OEM O2 locations
- Retains use of OEM crush gaskets
Removing, disabling, or altering emissions equipment on a pollution-controlled road vehicle is illegal. Installing devices or software that trick, disable, or modify emissions controls and monitors on a pollution-controlled road vehicle is also illegal. This product is sold only for racing, competition, track, or other off-road use. It's use is prohibited in any motor vehicle that is subject to emissions inspection or control. It is not legal for sale or use in California on any pollution-controlled motor vehicle.
BMW Fitments: 3 Series
E90 / E91 / E92 / E93 (06-13) > M3