Towerworld
Passed Driver's Ed
- Location
- Toronto
So I have a custom exhaust guy wanting to make a DP for me, he says he can use 3" pipe but the flange has to be 2.5" just like the stock DP. Seems to me like there will still be a substantial restriction with that flange, has anyone actually done a before and after Dyno run to show if Downpipes add any power? I have Unitronic Stage 1+ btw.
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