Originally Posted by SOG RA

Hey guys,
This question is directed specifically to tuners, guys who know what they are talking about, and of course other AP owners. So I have a full tbe now, 3in all the way. Switched to the stage 2 Cobb AP map, I was peaking boost at 13psi, max. Switched back to stage 1, easily hit 18psi. Even switched back to stock map, hit 16psi very easy as well. Any reasonable explanation for this. Cobb says it could be an issue with my car, but that makes no sense to me. If its my car, how could I hit 18psi on stage 1 map, 16psi stock, and 13psi on stage 2 map? They kept telling me about the wgdc percentage and what it should be and if its maxed out its maxed out. It maxed out on all maps, but maxed out on the stage 2 map only yielded 13psi. Any help would be appreciated.

Originally Posted by johnjodoinevox

haha im repliying 5 year late but all i have is an aem intake, tomei test pipe and catback and im hitting 27 psi.... can you give me info on this? what should i actually be at? if i should be way less imagine its hurting my car a bit

Originally Posted by Murdered Out

What kind of tune do you have?
27 is do-able... but I personally don't like to go above 24. Some people shoot for 26 but I wouldn't go past 26.