Stephen Ayers

I’m considering a 92db test day at Laguna Seca. Any suggestions for changes to make 92db? Thanks

stujelly

crashtest22

I think GMG had something for those. I would give James a call.
Basically you need to make something that attaches to the exits and goes up towards the drivers side and then kinda points at a slight bend toward the door with a few mufflers on it
I would guess you have seen pics of them on older cups
I don't think there is any stock system that will pass even street mufflers

roddw

You might give Doug a call at Race Technik in Phoenix, 480-655-7475. He has fabricated extensions w/interchangeable baffles for various tracks. Here is a picture on a 997 Cup, but I am pretty sure he has something similar for 991 Cups, as he has run several cars at Laguna.

Stephen Ayers

Just back from Laguna Seca. Made it through the day with no sound issues! Stock side mufflers + dundon center + turn pipes + short shift.

Thanks for all the suggestions.