adding cats to pass emissions
09-09-2011, 02:51 PM
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adding cats to pass emissions Will adding a set of high flow cats affect my current tune? I need to pass e-test, & found a set of high flow SLP cats, not sure if that will even do the trick, but I've read on here adding gas line anti freeze just before you test also helps out?
09-09-2011, 04:04 PM
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I don't know what a "stage 2 cam" is but it's probably going to give
the cats a lot of work to do, and long tubes at idle helps none. A
high flow cat is less effective than a stocker even if you could keep
it decently hot, which you won't.
Yeah, you probably have to do it. But I'd expect some grief. At idle
and cruise the high flow cats won't bother the tune much if at all.
Other tricks are change the oil right before, SeaFoam the intake
(oil doesn't burn well and leaves a lot of HC out the back) and come
in hot when the guy is ready, don't sit in line cooling off the cats.
And you might look for the "right guy", not take any old joker and
expect them to cut you a break.
the cats a lot of work to do, and long tubes at idle helps none. A
high flow cat is less effective than a stocker even if you could keep
it decently hot, which you won't.
Yeah, you probably have to do it. But I'd expect some grief. At idle
and cruise the high flow cats won't bother the tune much if at all.
Other tricks are change the oil right before, SeaFoam the intake
(oil doesn't burn well and leaves a lot of HC out the back) and come
in hot when the guy is ready, don't sit in line cooling off the cats.
And you might look for the "right guy", not take any old joker and
expect them to cut you a break.
09-12-2011, 05:55 PM
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i would never break the law. but my friend said that he heard that his friend made a donation to the emissions shop owners sons college fund and somehow passed.
