Anybody had problems passing emissions w/ a catted h-pipe? I was planning on buying a MAC h-pipe w/cats, but one of the local guys says he failed emissions. He has a pretty aggressive setup w/ edelbrock heads and intake w/ a e303 cam. I plan to have a similiar setup just TFS instead of edelbrock. I prefer to have a catted h-pipe, but I do not want to spend all that money and not be able to pass emissions. I prefer not to run an O/R pipe then switch to the stock for emissions. Just wonder if anyone has had success with the MAC pipe or another brand. Thanks for any help i receive.
aftermarket H-pipe w/ cats
- Thread starter haoleboy72
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A new three-way-catalyzed pipe should pass easily. I pass the sniffer but fail visually because my aftermarket catted H only has two cats and the OEM pipe technically had four. I don't know how emissions testing is in Hawaii though.
One thing to consider is that I've seen a few threads lately with people failing with aftermarket cats that are not too old. Yet the stock H cleans things up (the stock cats really hold up fairly well).
Good luck.
One thing to consider is that I've seen a few threads lately with people failing with aftermarket cats that are not too old. Yet the stock H cleans things up (the stock cats really hold up fairly well).
Good luck.
I put a mac H with the 2 high flow cats on this spring for emissions testing and I passed with flying colours. I kept it on after the test too because there was no loss/gain of power as compared to my catless X-pipe, and I think the H pipe sounds much better, having had both an X and H on my car.
Thats not typical at all. What else was changed besides the pipe in between the 2 pulls? How much power was he making to begin with?
I'm in AZ. And apologies - after seeing your username I assumed (incorrectly) that you were in Hawaii.
You might find that regarding how strict they are about the testing, it really comes down to what County you're in. I seem to recall Oregon having testing every two years, which is always nice (it's yearly here).
There are some folks from Portland on here (as well as a Grant's Pass guy, K-Falls, etc). They might chime in.
Good luck.
You might find that regarding how strict they are about the testing, it really comes down to what County you're in. I seem to recall Oregon having testing every two years, which is always nice (it's yearly here).
There are some folks from Portland on here (as well as a Grant's Pass guy, K-Falls, etc). They might chime in.
Good luck.
No need to apologize, you were almost correct! I lived in Hawaii for 9 years and my wife is an island girl. We moved to OR 7years ago for my job. My job sent me to AZ about 1 1/2yrs ago for some training, seen alot of real nice stangs rollin around. I guess it's easier to justify buying/modifing a stang when you can drive it 365!
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