Cats for back pressure or no cats?
#1
Cats for back pressure or no cats?
I have a 2001 camaro ss with few bolt ons, intake, exhaust. I have long tube headers with high flow cats waiting to be put on but cant quite decide what to do. Would it be better to run the cats so i can get more back pressure to help my low end or if i gut them would it be better without the back pressure or would i not necissarily need the back pressure? My longtubes are 1 3/4". Please let me know, thanks.
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Cats do absolutely nothing to increase power; they can only hurt (just how much they hurt depends on the overall setup). They are strictly an emissions device that are not needed if you don't have to take a sniffer test.
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BINGO. If you care and have time you can search the back pressure myths on this site. Its a lot of info about it.
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#10
If u want it loud and little smell of gas then time to remove them. My exhaust tone sounded so much better after removing the cats
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punch out ur high flow cats and tune out your cats, rear o2 and your EGR... u don't need any of that... but if you need to pass emissions u'll need something to pass the visual inspection thats why i said punch them out.
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just my $ 0.02s Johnny