370Z Nismo questions..HFC vs Test Pipe

InTheZone

Just buy a HFC

With Test Pipes:
-you won't pass emission inspections, unless you're in one of the states that don't have them
-your car will be spitting a ton more carbon monoxide=bad for everything
-if you're ever idle and smell something bad, that's your exhaust

a HFC will give you almost the exact results in HP gain, although neither gives you much. But it still functions like a normal catalytic converter

Vegitto-kun

Pfff who cares about carbon monoxide with our 245 grams already coming out

klubbheads

- you won't pass the emissions inspection no matter if you have test pipes or HFC
- lots of automobiles spit out ton of carbon monoxide. One Z with TPs is not going to ruin the world.
- there is a good chance you will get that smell with HFC as well.

OP: With TPs you will get some rasp at certain rpms no matter the exhaust type. HFC s dont have that problem.

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g35driver OG.

InTheZone

you will pass inspections with high flow cats. I have it on my car, it passes every time. There is a big difference between a straight pipe and a pipe with a catalyst(s) with 02 sensors.

And I'm not singling out Z's. I'm talking any car in general. Catalytic converters are there for a reason, no reason to run test pipes.

And the smell with a HFC resembles a normal catalytic converter more than a test pipe

Matt

I put Berk HFCs on my Nismo as my first mod. Amazing, deep sound. Still wasn't the volume I wanted, so I upgraded from Nismo to Berk CBE.

You won't be disappointed with HFCs on the Nismo.

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"Any man who can drive a 370z while kissing a pretty girl is simply not giving the Z the attention it deserves." Albert Einstein....modified.

klubbheads

Cars that smell like burned gas from the exhaust will not pass the emissions no matter what. Crawford makes one of the most expensive HFCs on G35s and I have smelled the burning gasses standing next to the car that had those cats on. Any cat that is less restrictive than stock will not let the car pass emissions. I am talking about the VQ engine. In your case, civic might pass the emissions with HFC because it is already one of the cleanest burning gasoline cars on the market.

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g35driver OG.

InTheZone

Well I was reading up more on HFC's, some will pass inspections, some won't. If they do, they will advertise it. The one's that are legal usually aren't in CA.