Caliber srt4 miss firing

[lcpld48180]

I recently developed a problem with my intune. If I go past 10 lbs of boost the car starts missing and jerking around I've tried adjusting the tune to no luck. I am only trying to run 16 lbs of boost.the car ran fine during the summer but winter has been a huge problem.

[mikel]

anything change on the car?
is it ok with the stock tune?

[sohfast94]

Have you changed the plugs and gapped them like you're supposed to?

[calisrt4washington]

My caliber kinda does the same thing. Now that I have downpipe it pulls quicker and boosts quick. Boosts to 10 psi then it stops and once it's goes to 8 it will boost up to 10 again. Thier any way I may increase my boost psi? Sorry if it sounds nooby. I am new to this world of boosted cars I just connected my intune tonight. It's on the basic Diablo sport tune. I have not got a chance to drive it yet. Got to late. But early in the am I'll do so. Thank you in advance.