Paul57

Does anyone run a pair of Magnaflows and not have the "rasp" that I have heard about???
Does anyone know the cause of it (rasp) or how to avoid it when I have my exhaust installed???
Does a "H" pipe help???

AFASTYZFR1

iTrader: (55)

I love my magnaflow.....no rasp

dlandsvZ28

Way too many variables:

Cats or no Cats
Stock exhaust - catted or not
Stock manifolds or LTs
Mfg Y-pipe merge design
Catback mfg
Catback muffler(s)

Once you get the above narrowed down - then how much rwhp do you loose with the system you choose ?

My system - no rasp:

ARH 1 7/8 LT's
ARH catted y-pipe
Magnaflow catback
Two Magnaflow 12 inch mufflers aft of the catback muffler.

http://www.flickr.com/photos/18359304@N07/3758925887/
http://www.flickr.com/photos/1835930...n/photostream/
http://www.flickr.com/photos/1835930...7602956888623/

The two Magnaflow 12 inch mufflers eliminated rasp.

Sorry - no video for sound.

Paul57

I guess I should clarify what my system will be...so maybe that will help.
My intentions are to have '02 Z06 manifolds, no cats, 2 1/4" mandrel true duals to an H-pipe and mufflers (12646 magnaflows? ...6x18 case), then 2 1/2" tail pipes.
It should make in the low 400s for HP & Trq.
Would this combo have the "rasp"...or does anyone know the cause??