FLP HP Gains w/ cats on

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07-31-2003, 08:46 AM

E96Z28SS

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Join Date: Dec 2002

Location: W. Chester, PA

Posts: 109

FLP HP Gains w/ cats on

Just curious how much HP I will gain going with FLP's and running the cats. I am also installing rollerockers/springs with the long tubes. Pretty much stock right now with 2OTL and SS intake.

Thanks

07-31-2003, 09:02 AM

KCFormula

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Join Date: Apr 2001

Location: KU

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I have never had my cats on but I only gained 8rwhp with the cats off!

(From stock manifolds with the cat in tact.)

07-31-2003, 09:05 AM

E96Z28SS

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Location: W. Chester, PA

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Thanks for the post!

07-31-2003, 03:53 PM

EviLBoX

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Location: Houston, TX

Posts: 825

A while ago someone posted some before and after numbers and they picked up 27 rwhp and 27 rwtq with FLP headers and their cats installed. It was a mostly stock car too, but I think that's a little higher than the norm.