emissions
 

I'm moving to Hawaii soon and wanted to know if any bolt ons such as headers or high flow cats ect would cause me to fail emissions.

It depends on Hawaii's DEQ.

Other than the retarded sticker you get to put on your bodywork and spoil the car, if they use a sniffer, HFC's usually fail, headers won't make any difference, nor will the rest of the system (unless it's amazingly loud)

After reading your response, a quick google search indicated that Hawaii does not have an emissions check! Guess I'll be looking into resonators or long tube headers instead. :D

Hmmm, Interesting, especially since I have BERK HFC and got through MD
Emissions with flying colors. Not so sure regarding the impact of headers however. Break a leg in Hawaii.:driving:

HFCs usually pass the sniffer test. Test pipes rarely do, although I've seen it.

The answer is that currently we do not have a sniffer test. Though anything like suspension mods will have to pass a recon test.

The lights need to be all OEM.

If your exhaust is too loud, then more than likely eventually you will get pulled over for excessive noise or something like that.

Depends on the sniffer levels accepted and how many cells the HFC's are.

Typically they do not. If test pipes pass, then the accepted levels must be very low and the tune on the car very fine.

Look out! Spoke with my Nissan Speed Crew & determined headers here I come! Along w/another required dyno tune!

Once you get a proper tune you'll actually run cleaner than stock even with the exhaust mods

Yeah, not true. You'll run cleaner than you were when you were stock with the exhaust mods, but not cleaner than cats.

I'm basing that on my G35 that I ran on the rollers with the sniffer and passed emissions, they give you the print out and all the values were good.

built block, twin turbo, dual 3" exhaust from the turbos back. Just cause there are cats doesn't mean its running super clean.

Emissions requirements are not standardised, and you're right, cats don't mean super clean emissions.

But the point is, cats will always run cleaner on a like for like engine. A stock normally running engine with cats will still have lower emissions than a tuned engine without cats (at least for the emissions the cats affect :) )

That is true :)