Evolve Catless Turbo Downpipes for BMW N54 135i, 1M and 335i are a proven upgrade for anyone chasing more power, faster turbo spool and a harder, more aggressive exhaust note. By removing the restrictive factory catalytic converters, these BMW N54 catless downpipes reduce back pressure and unlock performance on the twin turbo N54 engine. Ideal if you want a responsive, free-flowing exhaust setup on your BMW 135i, BMW 1M or BMW 335i.
NOT ROAD LEGAL – for off-road, race and track use only.
Why choose Evolve catless downpipes for your BMW N54
- Faster turbo spool and improved response on the N54 twin turbo engine
- Noticeable power and torque gains – adds approx 10 bhp and 10 lb.ft
- Deep, aggressive exhaust tone with increased volume under load
- Reduced back pressure for a freer-flowing exhaust path
Key features
- T301 stainless steel construction for strength and durability
- 3 inch downpipe design with 2.5 inch outlet flange
- Supplied with gaskets and new bolts for installation
- Fits both RHD and LHD vehicles
- Remap recommended to optimise performance
Fitment
Engine: BMW N54
- BMW 1 Series 135i N54
- BMW 1M N54
- BMW 3 Series 335i N54
Real results and feedback
We have installed and run these Evolve catless downpipes on our own builds and customer cars, and the feedback has been consistently positive. Expect quicker spool, stronger midrange and a sharper, motorsport-inspired soundtrack. A remap is recommended to make the most of the hardware change.
Fitting and tuning
Professional installation is recommended. For expert fitting and support, book with Nforcd in Warwickshire. Request a quote at Sales@nforcd.com.
These downpipes are not road legal. For off-road, race and track use only. A remap is recommended after installation.
What is included
- Pair of Evolve 3 inch catless turbo downpipes for BMW N54
- Gaskets and new bolts
Search-friendly terms
BMW N54 catless downpipes, BMW 135i downpipe upgrade, BMW 335i downpipe upgrade, BMW 1M downpipes, Evolve downpipes, N54 decat downpipes, BMW turbo downpipe, N54 exhaust upgrade, BMW 135i decat, BMW 335i decat, BMW 1M decat, N54 performance parts, N54 downpipes catless, track-only downpipes, off-road downpipes, N54 remap recommended.