[1970Boss#10]

Is there an easy way to disable the muffler by-pass. Even with it turned off it opens under full throttle. At Laguna Seca they have a 90dba 3 times over and they kick you out. Like you guys it's hard to lift in a GT350. Any ideas?

 

[GT_Dave]

I thought of making an aluminum plug that would bolt into the ends of the inner tips. It would allow the valves to open and work normally, but would block the sound. That seems to be the best option for the tracks with sound limits.