Eisenmann Rear Pipes without Resonator - E46 325i/330i/ci
Straight pipe center section without a resonator for more volume
Eisenmann has engineered the E46 325i/330i exhaust to use this center section as an option. The factory E46 section 2 system uses a resonator to tone down the exhaust volume even more. By removing the rear resonator with a set of straight pipes, more exhaust volume can be heard. It's like turning the volume knob up a few clicks.
As with their mufflers, the Eisenmann center pipes are made from T304/T306 stainless steel. This is only the section to remove the rear resonator in front of the muffler. It requires cutting of the original center section and clamping this in place. Another Eisenmann part is available that covers the complete center section from the headers to the rear muffler. The slip-on design makes this an easy upgrade to the Eisenmann muffler at any time so you can try out the muffler first and if you desire more sound the center section can be added later.
With near-zero restriction in the piping a small power gain may come from this section, especially on turbo cars, but the real purpose is to increase sound levels. The Eisenmann pipes will also save some weight over the factory section.
Notice of Emissions Non-Compliance. 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, hobby, or other off-road use. It's use is prohibited in any motor vehicle that is subject to emissions inspection or control. Not legal for sale or use in California on any pollution controlled motor vehicle.
E46 (99-05) > 325Ci
E46 (99-05) > 325i
E46 (99-05) > 325xi
E46 (99-05) > 330Ci
E46 (99-05) > 330i
E46 (99-05) > 330xi