secondary - BMW 3-Series (E90 E92) Forum

upss · 07-23-2011, 01:24 PM

if i deleted the secondary catted with the original down pipe make sense to gain a few horsepower with more flow thank

Jeff@TopGearSolutions · 07-23-2011, 01:40 PM

It wont produce any seat of the pants power but every little bit helps in the quest for more power.

DrivinMissDaisy · 07-23-2011, 01:49 PM

Anything you can do to free up the exhaust, will create power.

Bleep · 07-23-2011, 02:18 PM

Very little power, mostly sound.

rader1 · 07-23-2011, 03:54 PM

What kind of sound difference will it make? I've got a magnaflow axel back and I'm looking for a little more volume, will removing the secondary cats add volume or just change the tone?

07-23-2011, 01:24 PM	#1
upss Private Drives: 335i 2008 Join Date: Apr 2011 Location: Puerto Rico Posts: 60 iTrader: (0)	secondary if i deleted the secondary catted with the original down pipe make sense to gain a few horsepower with more flow thank
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07-23-2011, 01:40 PM	#2
Jeff@TopGearSolutions BimmerPost Supporting Vendor Drives: C6 Z06, GSXR-750, 09 335i Join Date: Dec 2008 Location: TopGearSolutions.com Posts: 12,470 iTrader: (25)	It wont produce any seat of the pants power but every little bit helps in the quest for more power. __________________ Latest Specials!! Email Me! Jeff@TopGearSolutions.Com Evolution Racewerks Charge Pipes and FMIC Sale ETS FMIC INTERCOOLER SALE! Cobb AP for BMW N54 & N55, Lowest Price! Like Us On Facebook For Discounts!

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07-23-2011, 01:49 PM	#3
DrivinMissDaisy Lieutenant Drives: 12 Kia Soul ! Join Date: May 2010 Location: Tehachapi, CA Posts: 493 iTrader: (3)	Anything you can do to free up the exhaust, will create power.

07-23-2011, 02:18 PM	#4
Bleep First Lieutenant Drives: 335xi Join Date: Jan 2011 Location: Brooklyn NY Posts: 369 iTrader: (0)	Very little power, mostly sound.

07-23-2011, 03:54 PM	#5
rader1 Banned Drives: Cobb Stage 2+ 135i Join Date: Apr 2011 Location: Roanoke, VA Posts: 2,197 iTrader: (0)	What kind of sound difference will it make? I've got a magnaflow axel back and I'm looking for a little more volume, will removing the secondary cats add volume or just change the tone?