hi guys,
i had my gtr on the dyno for a quick health check & i asked about my exhaust (steve N1GTR prompted me on this, damn you mate im gona go broke hehe). im currently running a hks superdrager which is 3.25inch at the front, then steps to 3.5inch mid way & finished with 3.75inch at the diff.
my tuner told me if i wanted more power to increase size & run x-force front pipes (2 x 3inch pipes which collect into a 3.5inch) then with a new 4inch all the way thru to the rear.
he told me i should expect 20awkw gain or more as the larger capacity rb26/30 really doesn't like back pressure
1 of his customers cars made more than 20awkw. where does it end haha