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03redcobra
02-18-2011, 05:54 PM
99 gt procharged got a bad stumbling problem under boost
RedSuperRanger23
02-18-2011, 06:31 PM
need more info
QWKSNKE
02-18-2011, 07:41 PM
How much is it pullied for? Last time fuel filter was replaced? What are the plugs gapped at?
RedSuperRanger23
02-18-2011, 07:43 PM
who tuned it, if it's tuned at all?
QWKSNKE
02-18-2011, 07:44 PM
says steeda did in his sig
RedSuperRanger23
02-18-2011, 07:47 PM
his sig is about an 03 Cobra...
QWKSNKE
02-18-2011, 08:04 PM
LOL. I never noticed his post was about a 99 GT until now. I thought we were talking about the cobra.

Yeah man, we need way more info on the GT.
rtusnake
02-18-2011, 08:46 PM
Spark/plug gap issue I say :)
03redcobra
02-28-2011, 03:43 PM
intune tuneed it 7 pounds of boost 42 pound injecters what else
QWKSNKE
02-28-2011, 04:09 PM
Are you in boost when it stumbles or is during normal driving?

What are the plugs gapped at? Fuel press readings?
coupe
03-02-2011, 01:01 PM
If it was fine before...and now is stumbling, with same tune and boost, then I suspect something like MAF meter just dirty and needs cleaning or possibly the above suggested plugs, wires, etc...
rtusnake
03-02-2011, 03:09 PM
I would check the plug gap and change the fuel filter
03redcobra
03-02-2011, 04:08 PM
under boost
RedSuperRanger23
03-02-2011, 09:36 PM
fuel pump...
Italian LX
03-08-2011, 02:55 PM
Is it just stumbling or actually feel like it's cutting completely off and right back on again. If it's the latter, then it could be just a bad connection of the chip. :shrug:
asilver2001gt
03-10-2011, 09:25 PM
Dude u ask for help but you provide no detailed info about the car. U r asked questions regarding the issue and u provide short responses that give us little insight to your problem.