I have a megan racing exhaust 3 inch back from the STOCK cat. 3 inch downpipe air filter and 2.5inch piping from the 3000 pipe to next of the air filter.im boosting around 7 psi. when i gun it from 3000k rpm. the gauge jumps up to 4 psi and works its way up to 7 psi. should i be boosting this much or more. maybe boost leak somewhere?