quick exhaust question

[usp55]

Whats the law in New Jersey about where the exhaust needs to be dumped in order to pass inspection? How far back i guess is my question...just past the rear axle or does it have to come clear out the back? I tried to look but didnt find much.

ooo one more while i have you here - cats, is jersey visual inspection?

[69BirdX]

It has to be behind the last window in the car that can roll down. So in most cars it has to be behind the rear. I Dont remeber the distance it has to be from the last opening window.
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Host And Design

[LTb1ow]

NJ is visual inspection, granted I don't know whether they would know whether they were in the right place or not.... but yea, they check your car out with mirrors...

[Tru2Chevy]

The law says the exhaust must exit at the side or rear of the vehicle no less than 4 inches behind the last window that you can put down.

- Justin

[usp55]

so if the exhaust dumps past the rear axle than thats well more than 4", thanks

I asking because im pro gona redo my exhaust, true duals off the headers either X or H piped. sounds really nice on a 3.8, http://www.youtube.com/watch?v=4YfZ2Msn2Ig
getts rid of the rasp atleast

[Tru2Chevy]

Sounds like that car is cammed too....

- Justin

[usp55]

nope, his other vids is when he camed it, sounds even better

here http://www.youtube.com/watch?v=oMdRV...eature=related

[JL8Jeff]

I think the exhaust has to exit out from under the vehicle as well. Just dumping after the rear axle is probably not legal either. Think about from the point of view that if they need to put the emission's probe in the exhaust then they will look for the pipes to exit. I don't think it's worth the cost to do a true dual exhaust that exits the rear of the car. It's not cheap and you won't really pick up any power over a 3" cat-back. In fact, the 3" cat-back will help pull the exhaust out from each side better.

[lastcall190]

I heard that only trucks can dump the exhaust at the rear axle, because it is well behind any windows that can roll down. Cars it has to exit out the back. That's what I have been lead to believe...

-J

does anyone here have TSP trueduals that goes through emissions?

[Tru2Chevy]

Originally Posted by lastcall190

I heard that only trucks can dump the exhaust at the rear axle, because it is well behind any windows that can roll down. Cars it has to exit out the back. That's what I have been lead to believe...

-J

Cars don't have to exit out the back, just at the perimeter of the vehicle, at least 4" behind the last window you can put down.

- Justin

so are dumps before the rear axle legal?

[JSPERFORMANCE]

nope.

[Jam]

Originally Posted by JL8Jeff

I think the exhaust has to exit out from under the vehicle as well. Just dumping after the rear axle is probably not legal either. Think about from the point of view that if they need to put the emission's probe in the exhaust then they will look for the pipes to exit. I don't think it's worth the cost to do a true dual exhaust that exits the rear of the car. It's not cheap and you won't really pick up any power over a 3" cat-back. In fact, the 3" cat-back will help pull the exhaust out from each side better.

a 3" True Duals for an LT1 with 2 high flow cats can max out at 830hp.

[WildBillyT]

Originally Posted by Tru2Chevy

Cars don't have to exit out the back, just at the perimeter of the vehicle, at least 4" behind the last window you can put down.

- Justin

Exactly. Certain Ford cars dump out the side from the factory. So do some Vipers IIRC.

[lastcall190]

^^Didn't even think of that good point...

[sweetbmxrider]

sorry to dig this up, but what about the SLR McLaren

[Tru2Chevy]

Originally Posted by sweetbmxrider

sorry to dig this up, but what about the SLR McLaren

I thought about that....not sure how they get around that law. Anyone know (James / Boon) anything more about that?

Or can you just not order an SLR McLaren at a NJ MB dealer?

- Justin

[Knipps]

you can afford the car you can afford the ticket (or a way around the law )