Thinking about putting in a Helix UP and DP but keeping a catback exhaust (like Borla) on and thn getting an ECU tune

My car's an 03, bought last April

anyone know how the emissions look after that and when the car is due for it's first emissions test?
I can never remember

 

If you get the Helix uppipe and downpipe, you will be running catless. Therefore you won't be able to pass emissions. Accordign the the DMV, new car models need to get a smog check every 4 years.

 

I was under the impression there is still a cat in the midpipe on the exhaust

 

1 cat in Up-Pipe 2 in Downpipe .. You can buy a High Flow cat that you can put into your midpipe. Basically, when you replace your downpipe and get a cat-back .. everything behind your turbo is replaced. Maybe you were thinking of an Axel-Back.

 

^ What he said. 1 cat in the uppipe, the helix DP replaces 2 cats, the DP cat and the mid pipe cat, therefore runnin' no cats.

 

ya the helix downpipe replaces both the stock downpipe and the stock mid pipe. I am just trying to make that clear

 

ok ok
but if I ge teh helix pipes and a Borla catback

that makes it 1 cat right?

anyone know how the emissions on that look?

 

interesting

thx crash

 

That should be fixed under the warranty. If stock cats fail the first emission (if no tampering was involved), I think the manufacturer has to replace it.

 

like the other people said above, a helix dp/up will replace all cats. You will not have 1 cat left. You will have to buy a dp that replaces only the 2nd cat, then you'll have the last cat.

So if u were to go in for a smog check, and had 1 cat, you better make sure your car is running very hot when testing. Otherwise you'll most likely fail. But other than that, you might pass the sniffer test, but not the visual inspection (if they really look into it).

 

You so sure about that?

http://forums.nasioc.com/forums/show...=MRT+pass+smog

 

There are a total of 3 cats in your exhaust system,the Helix Downpipe gets rid of 2 of them. And will fail the smog emission test. There are other brands of downpipes that only just get rid of the Downpipe cat, leaving the midpipe cat still in. If you're lookin' to run with just 1 cat, find a high flow one, I think godspeed and some other brands have them. It will cost more, but you'll have a lot better chance than runnin' catless tryin' to pass smog. There has been someone that claimed to pass smog with 1 high flow cat, and unless you're lookin' to crank 400-500hp, that 1 high flow shouldn't hold you back all too bad to still be passing smog.

I know for a fact that the Fremont Smog station didn't even look under my car, or dig deep into the engine. So maybe he'll be the same with the rest.

 

helix up and down pipes get rids of all th cats

 

i cant beleive daredevil actually had to say it again ...