JCW Over/Under on Pro Exhaust

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Jun 23, 2019 | 03:12 PM

Atlanta54

Thread Starter

1st Gear

Joined: Aug 2017

Posts: 15

Likes: 5

Over/Under on Pro Exhaust

My first track day is coming up and the DB limit is 98. '19 JCW HT stock. With the exhaust open, what is your estimate? Over/Under?

Jun 23, 2019 | 05:50 PM

invaliduser

3rd Gear

Joined: Aug 2002

Posts: 194

Likes: 9

From: Baton Rouge

Under without the throttle lift pops/bangs. Over with pops bangs.
Close the straight through valve and your fine.

Last edited by invaliduser; Jun 24, 2019 at 06:43 AM.

Jun 24, 2019 | 05:42 AM

tommybwell

3rd Gear

Joined: Apr 2004

Posts: 153

Likes: 5

From: Atlanta, GA

I'd say throttle down you're under. Pops and bangs way over.

Jul 11, 2019 | 11:17 AM

Darbys2019MiniJCW

4th Gear

Joined: Apr 2019

Posts: 401

Likes: 243

From: New Braunfels, Texas

Depends how far away the sound meter is...I AutoX with it open and it stays under the 105db 50 ft away but I don't know what the actual readings are... I am wondering how my new NM Exhaust will do...

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