Originally Posted by b1aze
Finish reading my 3 sentence post. If you have a vacuum leak, you should be able to log your relative manifold pressure with either a JB4 or Cobb AP.
I'm stock my friend
COBB AP V3 / ER Fmic / ER Chargepipe+HKS BOV /AA Catless downpipes / Agency Power Race mid pipes / Berk Technology race exhaust / AFE CAI closed box / BMW SSK / VMR wheels--Yokohma ADVAN AD08R tires / KW Club sport coilovers+KW Camber Plates / Spec stg2+Spec SMSFW