Catless downpipe for BMW 1 Series E82/E88, 3 Series E90-E93 - engine code N54 — TA Technix
Ref. 06BM001
- Secure payment
- 14-day returns
- Technical support
Catalytic-converter-free downpipe for BMW 1 Series E82/E88, 3 Series E90-E93 - N54 engine code
Features
Technical details
- 3"/76mm downpipe, 2-piece kit with lambda sensor port
What this part changes
The downpipe is the tube that runs down from the turbocharger. This is where back pressure builds up: the turbine has to push the exhaust gases through a narrowed section and often a catalytic converter. Enlarging it frees up the turbine, allowing it to build boost earlier and more decisively - it is the exhaust modification you notice most on a turbocharged engine.
What changes behind the wheel is the response. The turbo takes less time to spool and the power delivery holds higher in the rev range. On a remapped engine, this is the part that allows the ECU to deliver what the tune promises; without remapping, the ECU compensates and much of the gain remains untapped.
What to expect
- ECU remapping: essential to take advantage of the gain and prevent limp mode.
- Without a catalytic converter, the car is no longer road-legal and the engine warning light will come on if no electronic adjustments are made.
- Check the sensor port: single or dual depending on the engine, as indicated in the technical details of the product page.
- Removal often requires working from underneath and removing an engine mount: plan to use a lift or axle stands.
Compatible vehicles
| Make | Model | Engine | Years |
|---|---|---|---|
| BMW | 1 Series, type E82/E88 | N54 engine code, 225/250kW | 2007–2010 |
| BMW | 3 Series, type E90-93 | 335i, 225kW, N54 engine code | 2006–2010 |
Delivery & warranty
Frequently bought together
Enthusiasts at your service
since 2017
A question about your order or your car? contact@raslbitume.com
