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Discussion Starter #1
anyone have a ballpark idea of what kind of hp & torque gains a set of longtubes and an exhaust would give me? i'm thinking about a stainless works set like the one in the recent gm hi-tech, but it will run me about $2500+installation. just tryin to figure out if i want to drop that kind of cash vs the amount of power i will gain.

thanks, looty
 

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Fastest GTO in NL
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You need to provide more details:

What year car?
Any other mods?

BTW, $2500 plus installation? That seems a little steep. You can pick up a set of LTs for around $1200 (or less). I don't know if I've seen a $1300 catback yet...

With LTs and exhaust you should pick up between 10-20 rwhp across the board, with a little more on an LS2. You can probably get another 5-10 rwhp with a tune.
 

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20/20 would be a safe estimate
 
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