hks downpipe...

[supranites90]

does the hks downpipe that elminiates the pre-cat like the one on suprastore.com have any difference in emissions testing for the MK3 or do you guys have any recommendations?

[Jeeves]

If they eliminate the Cat, you won't pass. Pretty consistant on that.

[supranites90]

Originally Posted by Jeeves

If they eliminate the Cat, you won't pass. Pretty consistant on that.

but doesn't the mk3 have 2 cats a pre-cat and the main cat? because i've read somewhere that the pre-cat was mainly for cold starts...is it correct?

[Jeeves]

Not that I know of. I haven't ever had a 'stock' exhaust though.

[bgrieger]

one pre cat, one main cat.

[supranites90]

Originally Posted by bgrieger

one pre cat, one main cat.

can i get rid of the pre cat and use a high flow cat and still pass emissions?

[camry man68]

I dont know however you would be on thin ice, probably depends on the cat.

[bgrieger]

depends on whether you have a competent inspector on the visual and what their reference is. Most just look for the main, but those with computer links to the ministry of transport/dot will often have a checklist that will tell them to look for 2 cats... but they get lazy too. No matter how you cut it, you take a chance.