car falls flat on face HELP!!!!

[dogginred90]

I need some help guys. My car doesn't want to run the way it should. When you drive it normal it runs good but when you get on the gas abit it seems like it falls on its face let off the gas a little and she starts to go.I have changed everything that i can think of here is the list. O2, map, IAC. TPS, ignition module,coils,MAT,coolant temp,turbo rebuilt,plugs, wires,injectors. Here is the history of the car from what i was told. Before I bought it 2 years ago it was wrecked and sat for 3 years. And then it sat after that for another year till I got it running. Another one brought back from the dead(almost). I need you guys help to finish. Thank you.

[TGed]

Have you checked for fuel pressure readings or vacuum leaks?

[killinprixs]

Is there a flat spot on your throttle, TPS installed correctly?   how's the idle ?  Agree w/ TGed check fuel and vaccum leaks, should have like 18 # of vaccum.

[jimmy]

                Also after doing all that, I took my throttlebody apart along with the vacuum block and clean it real good and seemed to have help ;)

[flybynite]

  Change the fuel filter and see what happens     ;)

[dogginred90]

sorry guys forgot to add fuel pressure regulator, fuel filter changed also. had garage put in on scan tool he says everything looked god but it still doesnt move the way it should. Could it be a wastegate issue? second tps installed first one made my car idle at 3000 rpm.Thanks for your help

[TGP Nick]

Could be bad injectors... mine did the same thing with bad stock injectors and wouldn't even run past 1/2 throttle.

[mfewtrail]

Does the car have the stock air intake setup or a K&N filter installed? Is the computer chip stock or something else? Does the stock boost gauge register boost when you romp on the throttle? Any known driveability problems besides this one?

[TGPvsTIII]

are you getting into boost before it falls on its face or does it do this before boost? What plugs did you install and what gap did you set them to.
Tim

[dogginred90]

ok here it goes I have boost per the stock gauge. Accel u grove plugs msd wires, yellow top injectors (new),stock air filter. other driving problems are car vibrates at some cruising speeds not all the time. Have put 4 grand into this car and all i want is to drive it. oh yeah stock chip for now. i guess the wastegate has nothing to do with it . oh by the way at WOT after about 10 seconds it seems to pick up speed like it build up enough boost or something. I dont much about turbos(i wish I knew more. THANKS AGAIN GUYS. I will have pics before and after soon. It was ugly when I got it.

[flybynite]

How many miles are on the car. Has the fuel pump ever been changed that you know of.. Not a big fan of accel plugs either. Are they gaped correctly?? If it was mine I would put stock plugs in it gapped at .032   I to know what it feels like to have a ton of $$ wrapped up in a car, so be patient. It's probably someting simple..   :icon_lol:

[dogginred90]

i have been fighting this car since day one nd I still got about another 2 grand going into it for paint, and to get it looking good again. BUT

[dogginred90]

mileage is 136,000 gap is at .40 fuel pressure is good. i just want someone to suggest something that i havent tried. buying a tgpilot chip if i get it running right so i need to hurry to have fun.

[flybynite]

gap is at .40

The gap should be tighter than that. The boost could be blowing out the spark. Just a guess

[killinprixs]

Have you ever done a compression check on the motor?  Also a vacuum check?  Check all intercooler clamps and couplers? How old is the lower intake gasket?