Ok so ive been fighting this bug i changed the plugs and coil, plug wires are on the way. I was boosting 15psi. Underload between 3rd and 4th it was popping and snorting so i turn the boost down to stock it stopped but it still some times does it. i am begining to think that the computer is retarding the timing and dumping a lot of fuel to it because its see to much boost. Im stumped is it time to upgrade to a stage 1 to fix the prob so i can run more boost its a 04 mods are 3' exhaust, kinetic wga,and bov please help