deleting cats from stock headers question
#2
I don't think anyone here has done it but it has been discussed multiple times. I believe the consensus is that it would free up a pretty good amount of ponies. I plan on doing this as soon as I pull the trigger on a nitrous system.
#4
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damn why didnt i do this ...
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#6
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I went to a local muffler shop and they said that with a special tool they can bore out the insides and all i would need is a o2 sim/conditioner so that the cel don't pop up i will try this out to see what happens .
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#12
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In my opinion, my first isf was faster with gutted primary cats than when it had headers. Ive raced other ISFs with headers and I have yet to see anything to prove otherwise.
#13
Did you have your cat gutted or cut off and replaced with straight pipe? Did you do it your self and also did you need a o2 conditioner?
#15
Lexus Champion
I'll be your dyno....
Me and Slay raced not to long ago. We both data logged our cars, wot runs and A/F mixtures were great.
We raced from a 40mph roll till 160mph. We were head to head. At 90, 120, 140mph I jumped a foot at each. At 160mph I was only up by 3 tiny feet.
My car: afe filter, ppe header, isa cat back, iss scoops (a whole lotta $)
Slays: gutted primary cats w/ ppe 02 conditioner, replaced mufflers & secondary cats with straight pipes (he saved a lot of $, lol)
Me and Slay raced not to long ago. We both data logged our cars, wot runs and A/F mixtures were great.
We raced from a 40mph roll till 160mph. We were head to head. At 90, 120, 140mph I jumped a foot at each. At 160mph I was only up by 3 tiny feet.
My car: afe filter, ppe header, isa cat back, iss scoops (a whole lotta $)
Slays: gutted primary cats w/ ppe 02 conditioner, replaced mufflers & secondary cats with straight pipes (he saved a lot of $, lol)