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Discussion Starter #1
Okay here is a quick run down, fox body, stock 302 with 60mm turbonetics , had this motor turbo set up in another car and it ran fine until I blew a head gasket. Now thats fixed in a new car timing set at 8 degrees, car runs and drives fine, however when you step on it, I can hear the turbo spool and the mechanical guage shows boost however the car goes nowhere, in 3thrd it feels like it starts to pull a bit, then drops off quick almost like it just falls flat.I am thinking I could have a boost leak?? could it cause this any help would be great I have a msd box with a btm, I dont have the vac line on the btm yet. 42 pound injectors 255 intank pump
 

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Have you confirmed thatthe vac lines your WG and BOV are connected to the correct ports?
 

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Discussion Starter #4
I tried going over some of the hose clamps and tightening stuff down, took it up the road , in third and fourth and it pulled as it was making boost about 5 pounds or so, turned it around and brought it back did the same thing and it fell flat, smells real rich almost raw gas
 

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I started thinking that maybe I am running out of fuel?
If the exhaust smells like raw gas and burns your eyes its running too rich. You might want to trailer it to a tuner before you wash down the cylinder walls and end up with a much bigger problem.
 

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boost leak.. NO !! if your gauge is on the intake and reads boost it has boost. a boost leak will cause you to hear the spool and get no readings. like a intercooler hose off will over spin the turbo trying to make boost but you wont see any at the intake. A vac leak will bleed off some boost (metered air) and cause a rich condition.

was the BTM hooked up in the old car?? was the timing at 8* before?
I run 10* with no BTM...

IF it ran good before (like mine did) then I dont see it being the tune all of a sudden it must be something that has changed.



I have pretty much same combo and had issues when I switched cars. I feel your pain !!!!!
 

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Discussion Starter #9
the old car ran fine, of course it needed fine tuned but nothing like now. the only difference I can see is, before I had no msd, and I know I had a 255 pump, the guy told me in this car that it had one, but now I am gonna pull the tank since I have a new one sitting here anyway. I just have a feeling nobody changed pump ever in the car, I am sure a stock pump can handle the airflow?? wouldnt that be correct, red89coupe, how much boost with 10 degree timing are you running.
 

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the old car ran fine, of course it needed fine tuned but nothing like now. the only difference I can see is, before I had no msd, and I know I had a 255 pump, the guy told me in this car that it had one, but now I am gonna pull the tank since I have a new one sitting here anyway. I just have a feeling nobody changed pump ever in the car, I am sure a stock pump can handle the airflow?? wouldnt that be correct, red89coupe, how much boost with 10 degree timing are you running.

Thats exactly how mine was/is. I knew it needs/needed a good fine tune but it ran great before. everyone told me tune too but it should at least run as well as it did before.


no the stock 88lph pump will not keep up !!!!!! even the reg 255lph is not the best you need the HIGH pressure 255lph. IF you have any doubts about the pump I would not go getting into boost. do not want it going lean !!!!!!!

I run 10 psi.. I do have boost creep in 4th gear, it hits 12psi.. my wastegate is too small and poorly routed.
combo is stock motor,255 high pressure pump, 42s, pmas maf, 10* timing, 10 psi, MSD coil, currently no msd box and runs good.. no tune going on 15k mileage and 40 drag passes. I do have a fuel pressure gauge and a air/fuel. without them I could have easily blown it up trying to figure if i needed a tune or blown it up driving it when it was having issues. be very careful of that!!!!!!!! too lean you will need head gaskets again, too rich and like fmyth said... wash down the cylinder walls and end up with a much bigger problem.
 
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