BMW 135i N54 Decat Downpipes and 5 Inch Stepped Front Mount Intercooler 2006-2010
Unlock serious performance and reliability from your BMW N54 twin turbo engine with this proven combo: precision stainless steel decat downpipes and a high-flow 5 inch stepped front mount intercooler. Perfect for BMW 135i and 335i owners who want faster turbo spool, sharper throttle response, lower intake temperatures, a more aggressive exhaust note and consistent power on the road and track.
Why choose this BMW N54 performance package
- Real gains we have seen on cars we know and support, with 12-17 bhp from the downpipes alone and massively reduced IATs from the intercooler for repeatable performance.
- Top quality materials and fabrication for durability and flow.
- Direct fit for E82 E88 135i and E90 E91 E92 E93 335i N54 models 2006-2010.
Decat Downpipes - BMW 135i 335i N54
- T304 high-grade stainless steel, TIG welded for strength and longevity.
- UK-fabricated with 10-12 mm laser-cut flanges for a precise, leak-free seal.
- 12-axis CNC mandrel tube bending for smooth radius bends, maximum internal diameter and optimal gas flow without sacrificing mid-range torque.
- Sharper throttle response and faster turbo spool.
- Noticeable power gains and a deeper, more aggressive exhaust note.
- Lower EGTs and reduced exhaust backpressure to help the turbos work more efficiently.
- Substantial weight saving compared to the factory catalytic converters.
- Lifetime warranty on the downpipes for peace of mind.
Stepped Front Mount Intercooler - MTC Motorsport 5 Inch
- Bar and plate core paired with flowed cast end tanks for highly efficient charge air cooling.
- Massive 5 inch competition stepped core with increased surface area and near 100 percent more volume than the standard intercooler.
- Proven to handle over 600 bhp airflow demands.
- Direct fit FMIC for N54 BMW 135i and 335i models.
- We have seen outstanding results on multiple vehicles with dramatically reduced IATs for consistent performance.
Tested performance results
- Downpipes: increases of 12-17 bhp observed.
- Intercooler testing: inlet temps of 135-140 degrees were consistent across five back-to-back runs on both stock and MTC cores, while outlet temps dropped from 75-80 degrees on the stock intercooler to the high 20s with the MTC intercooler over all five runs.
- We would go as far as to say this is the best intercooler on the market for these models.
Fitment compatibility
- BMW 1 Series E82 E88 - 135i N54 engine 2006-2010.
- BMW 3 Series E90 E91 E92 E93 - 335i N54 engine 2006-2010.
Installation and fitting
Both items are designed as direct replacements and fitment is straightforward, though tolerances can vary and access can be tight. Professional installation is recommended. Intercooler install time is typically 1-2 hours. For expert fitting, contact Nforcd in Warwickshire for a quote at Sales@nforcd.com.
Recommended extras
- Lambda sensor spacer(s) are recommended to help prevent the check engine light in most cases.
Why buy from Nforcd
We have supplied and used these BMW N54 decat downpipes and the MTC Motorsport 5 inch stepped FMIC on customer cars and our own. Feedback has been excellent, with customers praising the improved response, stronger midrange and reliable, repeatable performance thanks to reduced intake temperatures.
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