Catted downpipe HP gains?

Sterrico · 02-04-2018, 02:24 PM

My state requires emissions inspection every few years. Therefore I don't want to keep putting the cat back on if I went with just a DP. Question is do you see HP gains going aftermarket DP with cat such as a VRSP DP with cat?

Suprgnat · 02-04-2018, 03:16 PM

Quote:

Originally Posted by Sterrico

My state requires emissions inspection every few years. Therefore I don't want to keep putting the cat back on if I went with just a DP. Question is do you see HP gains going aftermarket DP with cat such as a VRSP DP with cat?

You may wish to repost in the "135i Turbo Engine (N54 / N55), Exhaust and Drivetrain Modifications" section: http://www.1addicts.com/forums/forumdisplay.php?f=229

02-04-2018, 02:24 PM	#1
Sterrico New VW CEO 73 Rep 280 Posts Drives: 2011 135i Join Date: Mar 2009 Location: Hyattsville, MD iTrader: (2)	Catted downpipe HP gains? My state requires emissions inspection every few years. Therefore I don't want to keep putting the cat back on if I went with just a DP. Question is do you see HP gains going aftermarket DP with cat such as a VRSP DP with cat? __________________ Looking for the next ride..... 2011 135i 2016 M4 - Sold her. 2011.5 SG E90 - Loved her but totaled her. 2006 Z4M - Short but sweet stint
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