Problems during boost!

[Boosted 03]

My car drives perfect under normal conditions even during hard acceleration without boost. The problem is, when i am in boost the car feels like it's missfiring. It shutters and does'nt pull. THere is no pinging or any audible sound of detonation. I have been driving with the same tune for over a year with no problems or changes. Anyone have any ideas? DFPS? It's only when in boost. The car drives great without boost and idles perfect like always. Give me some ideas, im thinking spark blow-out, DFPS or a sealing problem (intake,blower or heads). Thanks in advance

 

[SICKBOY]

FPRS??? Could be the culprit...or so I have read...how manu miles on your fuel filter ? pry wouldn't hurt to change that out....do a search on here for the fuel pressure regulator sensor or over on modularfords.com

 

[IronTerp]

Traction Control????

 

[Boosted 03]

No, but thanks anyways. :thumbsup: