N55 DOWNPIPE - F SERIES - 4" EWG the improved exhaust flow will

the improved exhaust flow will allow you to run increased boost targets commonly found with advanced Stage 2+ tuning software

Upgraded pumps pull more current

3' F30   (02/2011 — 01/2016)

Because higher boost levels generate more heat

E & F chassis X5 X6 - 15mm is the only size we make located here

N55 DOWNPIPE - F SERIES - 4" EWG the improved exhaust flow willGain up to 23whp 29wtq Faster Turbo Spool Improved Exhaust Sound Upgrade to Stage 2+ Tuning SS304 Stainless Steel PROFILE An F30 N55 Downpipe is regarded as the best hardware upgrade to get the most power from your N55 powered F Series BMW. The stock N55 downpipe comes from the factory with a catalyst that severely restricts exhaust flow. Upgrading your downpipe unlocks power, improves turbo spool, allows you to run stage 2+ tuning, and increases the