BMW 135i 335i N54 Decat Downpipes, Stepped Intercooler and High Flow Inlets 2006 to 2010
Transform your BMW N54 3.0 twin turbo with this proven performance package for the 135i and 335i. This kit bundles stainless steel decat downpipes, the MTC Motorsport stepped front mount intercooler and the MTC high flow intake inlets. Expect faster turbo spool, stronger mid range, harder hitting top end and consistently lower intake temperatures. We run these parts on our own N54 cars and customer feedback has been outstanding for sound, response and reliability.
Why choose this BMW N54 performance bundle
- Optimised for BMW 135i and 335i N54 engines E82 E88 E90 E91 E92 E93 2006 to 2010
- Real world gains: downpipes tested at 12 to 17 bhp increase, intercooler delivers dramatically lower IATs, high flow inlets free up significant top end power
- Sharper throttle response, quicker turbo spool and reduced exhaust backpressure
- Aggressive exhaust note from catless downpipes that sounds fantastic without drone
- Built from quality materials for durability and performance consistency
- Lifetime warranty on the downpipes for long term confidence
Stainless Steel Decat Downpipes for BMW 135i 335i N54
- T304 high grade stainless steel construction, TIG welded for strength
- UK fabricated with 10 to 12 mm laser cut flanges for a precise fit
- One piece stainless design formed on a 12 axis CNC tube bending machine for smooth internal flow and maximum bore size without sacrificing mid range torque
- Faster turbo spool for sharper throttle response and noticeable power gains
- Lower EGTs and reduced backpressure that help the turbocharger breathe
- Significant weight saving compared to factory catalytic converters
- Tested gains of approximately 12 to 17 bhp
Downpipe fitment:
- BMW 1 Series E82 E88 135i N54 2006 to 2010
- BMW 3 Series E90 E91 E92 E93 335i N54 2006 to 2010
We recommend professional installation as exhaust tolerances can be tight. A Lambda Sensor Spacer is strongly advised to help prevent the engine light in most cases. You can find spacers in our other items. Note: decat downpipes are intended for off road and track use only.
MTC Motorsport Stepped Front Mount Intercooler for BMW N54
Engineered with a high efficiency bar and plate core and flowed cast end tanks, the MTC stepped intercooler keeps intake temperatures low and power repeatable pull after pull.
- Massive 5 inch competition core with increased frontal surface area
- Approximately 100 percent more volume and 100 percent more surface area than the standard intercooler
- Flowed cast end tanks ensure even charge distribution across the core
- Capability to support over 600 bhp
- Direct fit design. Professional fitting recommended and typically 1 to 2 hours
Proven IAT results:
- Intercooler inlet temps on road testing: 135 to 140 degrees on both OE and MTC cores
- Outlet to engine: OE 75 to 80 degrees vs MTC in the high 20s over five consecutive runs
The consistency and charge cooling are excellent, delivering repeatable performance and a clear edge over the factory cooler. We would go as far as to say this is one of the best intercoolers available for these models.
MTC Motorsport High Flow Intake Inlets for BMW N54 135i 335i
Designed for standard turbos with 45 mm compressor inlets. If you run hybrid turbos with 50 mm inlets, see our other products. These inlets keep the OEM location while removing the restrictive factory intake tract.
- High quality silicone construction reinforced with internal metal wire for maximum strength
- Fluoro lined to resist discolouration and oil vapour
- Smoother path into the turbos for improved flow and response
- One of the best value N54 modifications with gains of around 60 bhp possible from the intakes alone
Included in the inlets kit:
- 2 x reinforced intake hoses
- 2 x RamAir performance filters
- 2 x 57 mm alloy joiners
- 2 x 25 mm alloy joiners
Professional installation is recommended as access on the N54 can be tight. We can supply and fit in Warwickshire. To request a fitting quote please contact Sales@nforcd.com.
Key search terms
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Warranty and support
Downpipes include a lifetime warranty for peace of mind. We have installed and tested these parts ourselves and our customers consistently report excellent gains, stronger response and cooler running. Need advice or fitting in Warwickshire? Email Sales@nforcd.com and our Nforcd team will be happy to help.