V1 Straight Pipes - Montana Registration

[finazzoty]

Hey guys, quick question - So I'm in the state of Georgia, but going the Montana registration route. Has anyone (who has gone the Montana route) experienced any cop/legal trouble with having straight piped exhaust in any of your respective states?

 

[Goblinfanclub1234]

I never even started my goblin when I got my inspection for Montana, but I think it might depend who and where you get your inspection done. I had to drive to the neighboring state's highway patrol office to get mine inspected because Colorado is an ass

 

[G Atsma]

I THINK that no matter where the car is registered, you need to comply with noise laws of the state you are driving in. It's not about it being a straight pipe, but the noise level being blasted out...

 

[Desert Sasqwatch]

Try this website:
Exhaust Noise Laws By State | SEMA ACTION NETWORK (semasan.com)

 

[comegetjoe]

So I have to play nice and run exhaust instead of a 4" blast pipe directly off of the turbo until its inspected?

 

[RCK605]

A lot of states consider a turbo a muffler so you're good!

 

[Rttoys]

A lot of states consider a turbo a muffler so you're good!

Yep. That too.

 

[Cnixon160]

For what it's worth I've never had any issues from the law and I have about the loudest option possible, something like 18" from atmosphere to the turbine and the gate right on top, the only comment I have ever had was mention of emitting flames being a hazard during a drought/burn ban

 

[Robinjo]

But your police and his police tolerance might be different.

 

[finazzoty]

Based on what I'm hearing, I think I'm leaning towards just running a blast pipe. For those of you that have done this, what do you do with your post cat O2 sensor? Also, does anyone know where I might find something prefabbed that will fit the bolt on exhaust flange for a ZZP Z54?

 

[Gtstorey]

Very few are running a cat to have the 2nd o2. And very few have done without a muffler.

 

[Cnixon160]

Post cat O2 is removed both physically as well as disabled in the tune file unless you're running a cat, it has nothing to do with the normal operation of the engine and is solely for emissions

 

[Gtstorey]

I think Atlanta has emissions requirements.

 

[finazzoty]

Atlanta does, but I am registering in Montana so emissions are a non-issue thankfully.