Hi guys anyone know what sort of boost i should get on my02 sti ppp 12000 miles running on optimax, getting about 1.3 at the moment cheers.

 

If it's similar to the Sti8 PPP then AFAIK it should peak at about 1.35bar (a friend recently was pulling 1.5 bar and found this out as he thought to ask if this was correct to which the dealer replied "no it's a bit high you'd better bring it in for a check")