Are Catted downpipes worth it?

Installing a catted downpipe with a tune can give you up to 40 horsepower and probably half that without a tune – about 20 horsepower. This is a pretty good boost of horsepower from just one performance mod. Louder exhaust sound. Aftermarket downpipe is wider and less restrictive than a stock downpipe.

Does a downpipe increase torque?

This enables the movement of more exhaust gases at a higher speed, allowing your turbo to spin quicker. In addition to the increased responsiveness of your turbo, you can expect an increase of 15-20 horsepower and torque. Hence, an Armytrix downpipe allows more and easier access of air into your engine.

Does downpipe make a difference?

The after-market downpipe is proven to improve performance. Most after-market downpipes are both mandrel-bend and larger in diameter than the stock units they replace. Therefore, they can significantly reduce restrictions and make fairly dramatic improvements in horsepower.

What are the downpipes on a BMW 335i made of?

The ARM 335i catless downpipes are designed with a 3″ stainless steel construction to optimize exhaust flow and obtain optimal back-pressure. Each downpipe has 2x O2 sensor bungs so the factory BMW O2 sensors can be remounted allowing the ECU to continue to monitor the exhaust gases.

Which is the best downpipe mod for the N54 135I?

We are proud to introduce our VRSF 3″ Catless Downpipes for the N54 135i & 335i which now feature a cast stainless steel mouth. These 3″ downpipes are THE best bang for the buck mod available, with gains from 25hp & 30tq when tuned.

Where does the downpipe go on a BMW N55?

The exhaust downpipe is the first part of the exhaust system on the N55 engine. It bolts-up straight to the turbocharger and passes air from the turbo to the cat-back portion of the full exhaust system. The OEM downpipes have catalytic converters on them, for emissions purposes.

What kind of engine does a BMW 335i have?

FITMENT GUIDE Make Chassis Model Engine BMW E82 1 M Coupe N54 3.0L BMW E82 135i N54 3.0L BMW E88 135i N54 3.0L BMW E90 335i N54 3.0L