Bmw 135i N55 Decat Downpipe E82 E88 2011-2012 200 Cell Hi-flow Sports Cat

The BMW 135i downpipe is machined from T304 high-grade stainless steel and are tig welded in house. The decat is fabricated in the UK and the flanges are laser cut between 10-12mm. Sharper throttle response due to faster spool of the turbo. Noticeable power gains and a much more aggressive exhaust note which sounds truly amazing.

Produces lower temperatures and less exhaust backpressure due to the relief of the turbocharger. Also, the cylinder charge is increased.

There is also a substantial weight saving in comparison to the factory catalytic converter. Mandrel-bent for better gas flow and maximum internal size to ensure ultimate performance without the loss of mid-range torque. This decat will fit the following models. We have tested this product and found increases of 12-17bhp. Professional installation is recommended as some exhausts sit slightly different from others and can be tight although the feedback we have received from this product is that it is very easy to fit.

We also recommend purchasing a Lambda Sensor Spacer(s) to prevent the engine light coming on in most cases. If you search our other items you will find these. This should pass an MOT emissions test when fitted. They are road legal and Euro 5 rated.

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