turfshark

iTrader: (3)

would running an uppipe w/o the dp make much of a difference performancewise? or is it the combination of the 2 that makes it worthwhile?

Kevin M

iTrader: (12)

It helps. You can spool much faster without the cat there, but peak horsepower isn't affected much.

RU-X

iTrader: (9)

are they(in CA) really going to jack up ur car and look if the DP was messed with? cuz when my civic was smoged, they just hooked that sucker up to the computer and that was it.....

Kevin M

iTrader: (12)

The downpipe is extremely obvious if they do a visual. The uppipe they'd have to specifically look for.

tsubaru02

i have a gpmoto intercooler hose,stock uppipe gutted with the resistor mod,and a hks downpipe,all i have to do is put back the stock downpipe every 2 years and let the baby get hot,run car like 30min before test pass smog and put your other downpipe back on as long as you have a stock downpipe you are ok the uppipe is just for cold starts you dont need it get a stock gutted one so you will pass the vision test and your ok,,,,i hate cali smog test lucky they are only every 2 years......hope this infor help....

1reguL8NSTi

Get a massive metal wing. They always pass. Oh........and a fire extinguisher.

alchemyst[wrx]

Hey, BAN SUVS, thanks for great infos (taking notes...writing them down...). When you mentioned about U/P, what exactly do I have to do so CEL won't come up. Resistor mod? I don't know what that is, but I'll try to search under google for infos. Thanks again.

tsubaru02

the resistor is a 2.2 watts little plug they sell at raidio sack for like .99cents you get six of the plug it in were the egt sensor plug goes and your all good to go were do youlive i can give you one and show you were it goes laterzzzzz....................subie power

Kevin M

iTrader: (12)

No, you need a 2.2k Ohm, 1/4 watt resistor.

jpun1

iTrader: (2)

i know it's not legal, all i care is if the following will pass the sniffer...helix catted dp, helix flex up, headers, and ecutek reflash. has anyone out there with similar setup passed smog without having to swap back the stock parts? i eventually want to get a bigger turbo too, like a vf34. will i have to swap that out too everytime i smog? as far as the visual goes, if i have a catted dp it should pass visual right?

Kevin M

iTrader: (12)

No, absolutely NOTHING passes the visual. It's easy to pass the emissions test with mods as long as you still have a 3-way catalytic converter. If you have someone willing to not pop the hood during the testing, then the sniffer is no big deal.

subywrx

iTrader: (9)

If I have a mbc, cat back exhaust and sti i/c can it pass the emissions?

Kevin M

iTrader: (12)

No, yes, and no.

jpun1

iTrader: (2)

not to dis ban suv, i appreciate your input, but has anyone else have any experience w/ mods and emissions testing? i personally have never seen them do a visual inspection when i go to get a smog done.

Kevin M

iTrader: (12)

I lived in California for the first 4 years I owned my car. Believe me, I know the laws.