On & OFF Switch for Exhaust???

semtex

Exhaust bypass valves come standard on the factory exhaust for the Audi RS4. Is the RS4 illegal in NJ?

__________________
"There are no small accidents on this circuit." -- Ayrton Senna
316.8whp & 248 ft/lbs (Dyno Dynamics) | 319whp & 256 ft/lbs (DynoJet) (04/23/10)
Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

2011 Nismo#91

Probably unless the had a special exception because it was a limited run, good luck getting one with out a legal division on hand. You are not allowed to have excess of 90db on a car's exhaust. Opening a cut out will do that easily and then some. No inspection station would let is pass either if they saw it.

39:3-70. Mufflers.

39:3-70. Every motor vehicle having a combustion motor shall at all times be equipped with a muffler in good working order and in constant operation to prevent excessive or unusual noise and no person shall use a muffler cut-out, bypass, or similar device upon a motor vehicle on a highway.

semtex

I think the key word here is "use" i.e., possession and usage are two different things legally. So you can have it, but you can't use it on a public road or you risk getting a ticket (but you could still open it up on a track). I've seen other laws that draw these subtle distinctions. In GA, for example, it's legal to purchase an automatic knife, but not carry it. Or for another example, in GA you can have your car equipped with NOS, but you can't use it on a public highway. (So if you get pulled over the cops will sometimes check to see if the valve is open on your NOS bottle.) But hey, I could be wrong.

__________________
"There are no small accidents on this circuit." -- Ayrton Senna
316.8whp & 248 ft/lbs (Dyno Dynamics) | 319whp & 256 ft/lbs (DynoJet) (04/23/10)
Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

TreeSemdyZee

If I'm not mistaken, some of the 'vettes also have this.

2011 Nismo#91

What is on the vetts is not an exhaust bypass, another exhaust tip just opens up, completely different. The original exhaust system is still used there is just another hole in the back.