03 GTI 1.8t
Mods: Cold air intake, 3” down pipe & 3” back, Stage 2 tune, 4 bar fpr, and some Dv that came on the car
Alright guys so I finally found someone with a scan tool to diag my 115 blocks.. It’s a stage 2 (2step & NLS) my problem is that I’m not peaking over 15lbs when the tune calls for 22lbs peak. I bought the car with the tune already on it so I was skeptical if it was actually true or not. Today I did a couple pull with the tool hooked up and the MAX Specified boost was 2550 mbar (22.xx lbs) and the MAX actual boost I achieved was 2070mbar (15.3x lbs). So where would I start trying to find a boost leak ? Is there a way to troubleshoot the DV ? And a proper way to test N75 valve (can’t find a true step by step without having questions on a old thread)? What could cause this much of a boost loss ? Any and all help is appreciated. Thanks !!