Why can't i get full boost?

[Romogst]

Ok, here is the deal. I just installed the TURBOXS High performance Boost controller, set it to 17psi worked fine for a day then on the third day when i got on it to see how much boost i make, around 10-13psi my car started to stumble so i had no choice but to shift. I tried again to adjust the boost controller and still doing the same thing. Anyone has any idea what this could be? I had a fuel pump upgrade done at the same time. Thanks.

 

[Spidey]

The stumbling could be a few things, check your plugs first of all, change them if needed. Could be fuel cut too, but that would feel like you smacked a brick wall very hard.

HTH,
Spidey

 

[CanadianTSi]

Quite possibly could be a boost leak, check all your connections and make sure there real tight.

 

[Coldandafraid]

maybe, too rich?