Issues with HFC's
 

Has anybody had any issues with there HFC's here in So.Cal? Check engine lights, cops, passing emissions etc...

All HFC's are illegal in California, use them at your own risk of being popped.

Agreed.

My duramax truck is completely straight piped... 42k miles and no issues so far. Also had my G37 running test pipes for 2 years no issues.. Even when getting pulled for other things.. No front plate, tinted windows/tails ect... I say go for it IMO!

How would the cops even find out?

If they took a peek at the under carriage, the HFCs look stock.

No issues eng. Buy good ones and have a pro install them and uninstall prior to smog. Be ready for sound and power! Consider a tune if you are combining with other in/out mods.

Agree 100% :tiphat:

I was thinking of fast intentions hfc's, what do you guys think?

Those are a great choice, as are Berk HFCs. Unless your exhaust is stupid loud i.e. straight pipes, it is highly unlikely you will get pulled over and if you do, I doubt it would be for your exhaust. HFCs are also perfectly capable of passing emissions, it's just that visual inspection that could get you if the person actually checks under the car.

Thanks alot for all the info guys. I think Im going to get these
http://www.fastintentions.com/produc...products_id=35

I have a 2011 nismo and so far I just got the K&N typhoon. Now would you think the rasp with the Resonated HFC's would still be noticeable?

I have no rasp with non resonated Berk cats and a 12" resonated FI exhaust.

I have slight rasp with my setup, but its definitely worth getting them and i think it sounds awesome...

BTW this is not a recommended DIY- if you're going with FI model consider having SpecialtyZ do them. PM Seb for details before you order. Find them in the vendor area.

Yeah I agree, I actually spoke to tony from fast intentions and they can install them at his shop

I was running super lean after my HFC's went on.. G3/CBE was already in place. Good to have A/F mix checked after install. Seb can do that and advise if tune is needed. Battery pull/ECU reset may not be enough.

Yeah, your right,i have a 2011 nismo and my setup is the nismo exhaust with the k&n typhoon, now do you guys think i will run lean with this setup?

IDK how much extra flow the Typhoons give you, Nismos are tuned differently with slightly better exhaust than base- point is a pro can hear (lean) detonation without needing a to plug in so take it to one after the install. Seb will shoot you straight. He is local to FI.

x2, Seb immediately picked up on detonation as soon as he started my first base run on his dyno.

Thanks alot for all the feed back. Now what do you guys think is the probability of passing emission with HFC's? I understand the visual will not pass if the person knows anything about HFC's.

There is a 1.2% probability that you would pass with HFC's on your car. When are you going to try?

You'll definitely pass. If I passed emissions with my 1996 Saab 900 with a GT28 turbo, big injectors, a race cat and full 3" exhaust, and an aggressive tune, you can pass the sniffer easily.

Many new cars these days run so efficiently that some will pass without any cats at all.

Better than nothing!:ugh2