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post #1 of 5 (permalink) Old 06-20-2012, 09:55 PM Thread Starter
 
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Need help!! cant decide

I have an 2004 gto, cant decide on an exhuast system, i was looking at slp loudmouth and longtube headers but i dont if i want to go catback or no cat. i want hp/torque

help is appreciated
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post #2 of 5 (permalink) Old 06-22-2012, 10:24 AM
 
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Originally Posted by blackbeast View Post
I have an 2004 gto, cant decide on an exhuast system, i was looking at slp loudmouth and longtube headers but i dont if i want to go catback or no cat. i want hp/torque

help is appreciated

I have SLP header's and "loudmouth" cat back on my 04. Its the best sounding and gives my the best gains IMO. But your gonna need a tune if you have those if you want to see some actual good gains in HP/TQ.
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post #3 of 5 (permalink) Old 06-22-2012, 10:40 AM
 
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Put on the LTs and mids. That will give you the power. Changing the cat back won't give you anything worthwhile if at all. If you remove the cats get an H or X pipe. Leave the stock cat back on. If anything open the pipes to 2.5 from the 2.25. Nothing sounds better on the '04s than the stock cat back.

Current: MGW-p, H-pipe, SS OTRCAI, Lovell rear springs, Eliminator shocks and Pioneer AVH-P3300BT, JBA LTs+catless mids, Drilled/Slotted rotors, Kooks Afterburners, catch can & Tune Next: ??? Wish list: Intake & TB, modest cam, UDP, gears

Last edited by BWinc; 06-22-2012 at 11:30 AM.
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post #4 of 5 (permalink) Old 06-22-2012, 11:19 AM
 
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^^Agreed^^
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post #5 of 5 (permalink) Old 06-22-2012, 02:14 PM
 
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If you want the most power... buy Kooks headers. They are PROVEN to put out the most.

I think you will be shocked how good LTs will sound on your stock 04 exhaust. I'd go with just that for now. You can always change out the catback anytime.

I wouldn't do headers with an SLP exhaust because it will retardly drone and be so loud your neightbors will hate you.

2003 Corvette Z06 - MGW shifter, Corsa X pipe, Corsa Xtreme exhaust, Texas Speed long tubes w/o cats, PowerStop rotors/pads, Conti DWS tires, C6Z51 F&R sways, C5R headlights, tuned

04 GTO - sold
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