DennisRB30 - yeah i only got a 1psi increase, but it spikes to 10 occasionally. 9.5psi is a nice gain from 7 huh. maybe my gauge reads in the wrong place? coz the car has heaps more power after putting on the 3" pipe. my 33 is dead even with my mates 33 which has the same mods as mine but with the addition of a dsbc running 11psi on high....
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