94 gt with many mods low dyno numbers

94bluebyu

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I have a 94 gt with fully forged 306 gt40p heads full off road exhaust trickflow street heat intake 9 lb powerdyne 42lb 255 intank boost pipe lightning 90mm 373 gears 5speed dyno numbers seem low 255hp 345ftlbs any sugestions with 9 lb pully getting 5.5lbs in colorado. diablo sport custom tune also
 

JKady

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Dyno tune it instead of an over the internet or out of a can tune would be a good start. That is pretty low. What cam? Have you played with timing?
 

TT94SVT

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I have a 94 gt with fully forged 306 gt40p heads full off road exhaust trickflow street heat intake 9 lb powerdyne 42lb 255 intank boost pipe lightning 90mm 373 gears 5speed dyno numbers seem low 255hp 345ftlbs any sugestions with 9 lb pully getting 5.5lbs in colorado. diablo sport custom tune also
I dont believe diablo makes any tuning hardware for the 94 mustangs. It is tweecer and moates quarterhorse. If you want more power you have to add timing and lean the car out. Be careful though as you do to much of either and you can blow gaskets and possibly crack your block. what air fuel ratio are you running at WOT?
 

RichV

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Does it just have a stock computer, no tune at all?

Go to FinishLine performance in Denver. Or a few other good tuners locally. Rob Williams, Scot Patten, or even EDP in the springs. All can get you setup. My NA gt40 setup puts down 260 so yea, something is off.
 

TT94SVT

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I mean the fact that its a 5.0 car. I assume chips are similar.....
The computers are very different the fox mustang uses the a9l computer. the 94-95 computers are supposedly better but have been known to be less mod friendly
 

Magic

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All year Mustangs 1986-2004 (and other Fords) have the same J3 port (the port that the chip is attached to) on the back of the computer. These chips (Diablo, SCT, Moates, Tweecer etc etc) aren't year specific, however the programming/tune is.
 

RichV

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All year Mustangs 1986-2004 (and other Fords) have the same J3 port (the port that the chip is attached to) on the back of the computer. These chips (Diablo, SCT, Moates, Tweecer etc etc) aren't year specific, however the programming/tune is.

I don't beleive the OBD2 need it, do they? Isn't that just a 86-95 thing?
 

ttocs

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I put a bama chip on my 5.0 and it was barely able to make it to the dyno to get a proper tune on it.
 

94bluebyu

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Dyno tune it instead of an over the internet or out of a can tune would be a good start. That is pretty low. What cam? Have you played with timing?

it is dyno tune timing is set at 10 deg and dyno tuned chip will fix timing curve under boost 1 thing i did not understand is the fuel was bubling out of test port on fuel rail when i pulled the guage off bad fuel pump?
 

JKady

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If there is fuel coming out of the pressure test port with nothing attached the schrader valve in the test port is stuck or damaged and not sealing.
 

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