3' custom
#3
RE: 3' custom
i dont think you can remove too much back pressure in a turbo car, its already forcing air through the exhaust housing fast enough, too big really only becomes an issue on an NA car. Stock or not removing the cat makes more difference than any other part on the exhaust. Just remember its loud, smelly, and illegal. But as for your 3 foot custom exhaust, that sounds pretty big to me...
#7
RE: 3' custom
cuting a cat is ghetto, especially since it has bolts. buy a strait pipe if you dont want it, but id not even worry about it until you upgrade your exhaust all together. ps, your gona want that cat when you visit the smog ref
#8
RE: 3' custom
yea cutting your cat off will make your car's emissions illegal, and you need to keep that legal in order for it to pass e-check and to renew your plates... just buy a high flow cat or leave well enough alone
#10
RE: 3' custom
there was a write up in import tuner on removing the cat or going w/ a high flow cat the difference between the test pipe and the high flow was one hp
going w/ a high flow will save you a ticket but then again no cat is cheaper but still illegal
going w/ a high flow will save you a ticket but then again no cat is cheaper but still illegal