Photos shown for illustration; shade and shape may differ slightly.
Tegiwa Stainless Decat Downpipe for the BMW 135i E82, E88 and 335i E9X with the N55 Engine, 2010-2012
Supplier stock
The Tegiwa decat downpipe fits the early N55 engine, as used in the 135i and 335i built up to 2012. The tubing and flange are T304 stainless, TIG welded, and the tube is mandrel bent so no mid-range torque is lost. Without the catalyst the turbo spools faster and the engine responds more sharply to the throttle.
Specifications
| Brand | Tegiwa |
| Code | T-N55-DP-EARLY |
| Material | T304 stainless steel, TIG welded |
| Tubing | mandrel bent |
| Engine | N55 (N55B30), early version |
Which cars it fits
- BMW 135i E82 and E88 coupe with the early N55 engine
- BMW 335i and 335xi E90, E91, E92, E93 with the N55 engine
What to check
- N55 engines built from July 2013 take the separate version, T-N55-DP-LATE.
- It removes the catalytic converter: a competition part, and the car is no longer road legal.