stock mufflers???

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spikeGT_99

New Member

May 3, 2004

184

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0

Jackson, Ms

Sep 6, 2004

#1

• Sep 6, 2004

• #1

as u can see in my sig, ive got a prochamber with the stock mufflers, is the stock catback robing enough power to justify an aftemarket catback? I really like the sound coming out of the tailpipes, so thats not an issue, im asking because i might have an opportunity to get a steeda catback dirt cheap in the very near future
thanks for any info.

 

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spikeGT_99

New Member

May 3, 2004

184

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Jackson, Ms

Sep 6, 2004

#2

• Sep 6, 2004

• #2

anybody got an opinion?

 

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01mgvert

New Member

Jan 12, 2004

302

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Sep 6, 2004

#3

• Sep 6, 2004

• #3

Most people will tell you that catbacks are only for sound. The truth is you can probably pick up an additional 8-10 rwhp depending upon the system that you buy. Check out this product review of three catback exhausts: Magnaflow, SLP, and Bassani. The best gains can from the Magnaflow with 12.5 rwhp and 8.2 rwtq. The tests were done on a stock Mach I so the GT results should be slightly lower. Check out this webpage:
http://www.mach1review.com/CATBackExhaustSystemsReview.html

 

ironmedic

New Member

Mar 18, 2003

1,361

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Puyallup, WA

Sep 6, 2004

#4

• Sep 6, 2004

• #4

if u port and polish your mufflers, u can get 20hp

 

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3.8L_of_Pain

New Member

Jul 4, 2004

123

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Southern California -- Orange County

Sep 6, 2004

#5

• Sep 6, 2004

• #5

01mgvert said:

Most people will tell you that catbacks are only for sound. The truth is you can probably pick up an additional 8-10 rwhp depending upon the system that you buy. Check out this product review of three catback exhausts: Magnaflow, SLP, and Bassani. The best gains can from the Magnaflow with 12.5 rwhp and 8.2 rwtq. The tests were done on a stock Mach I so the GT results should be slightly lower. Check out this webpage:
http://www.mach1review.com/CATBackExhaustSystemsReview.html

Click to expand...

Good article. It is nice to read factual information, not hearsay.

The only 99+ GT dyno test I am aware of was for the Dynomax 2.5" catback with ultraflow mufflers. It tested + 4.2 rwhp. This article used to be posted on seanhylandmotorsports.com.

 

mcmmotorsports

Member

Apr 12, 2004

689

0

17

Danbury, CT

Sep 6, 2004

#6

• Sep 6, 2004

• #6

I was just like you a few weeks back. I had the Max O/R X and stock mufflers and was happy with the sound too, but, I wanted it just a tad bit louder. I just welded up Hooker Aero Chamber mufflers and my initial impression was, OH ****T!! MY CAR GOT SLOWER!!!
However, after driving it in the upper RPM's a little more, I realized that I did in fact pick up a few ponys, just lost a little torque down low. No problem, PLUS I got the sound I was searching for too!!