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Unfortunately, the muffler shop I used didn't have any SS 2.5" pipe available at the time of install. I am seriously considering on adding ~ 2" to 3" of 2.5" piping but was hoping to find out ahead of time if that will actually make any difference in the db level by having the mufflers extended out more.
1990 JDM RHD - Stage X 491.0 RWHP, 476.1 RWTQ, 18 PSI, Pump gas 26PSI w/Race gas = ???
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