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  1. Decipha

    fuel pressure adjustment 19 or 30lb injectors.

    93 doesn't use a map it uses a bap but you don't need it the 93 ecu is a downgrade from the 94/95 ecu. A lot of people did that down grade years ago because they had sub par tuners. No point in going to 19s or swapping mafs if all works now. Best bet is to dial in what you actually have...
  2. Decipha

    TPS Voltage reading

    As long as the tps is between .7 and 1.25 volts at closed throttle its set perfect. make sure the key is on when your testing. And be sure you use the wires at the tps for power and not the battery as it will be skewed.
  3. Decipha

    2004 Ford Mustang V6 3.9L OBD2 Codes P1000 and P0455 (x2)

    look up one for an f-150 it should be the same
  4. Decipha

    Fuel Fox fuel pressure cold starts

    you have to also temporarily unplug the spout and tps plug along with the iac to set the throttle stop correctly. details- http://www.efidynotuning.com/idleair.htm tps voltage is irrelevant On all my custom tunes I set the fuel pump prime time from 1 sec (stock) to 3 seconds to build pressure...
  5. Decipha

    stock ECU limitations

    I usually cap the fox ecu's off at around 1,200rwhp. Anymore and things happen too fast. At that point swap to an 03/04 ecu with EDIS ignition and your good to 2,150rwhp no problem.
  6. Decipha

    No More Offroad Mid Pipes?

    The EPA has been cracking down for a while its nothing new just inventory trickling. Now that CARB is the federal mandate hence no more 49 state legal anymore things are going to get much worse before they get any better. Reason why aftermarket cats are cheaper is usually because they don't...
  7. Decipha

    94 GT 5.0 to 5.8 swap

    More than 10 years ago I stuffed a 351 under the stock hood of my 92 tbird using an edy super vic intake and low profile corvette elbow. No reason you cant do the same. The mn12 tbirds and sn95s have nearly identica engine bays.
  8. Decipha

    Engine Engine build help

    if your wanting an ots cam the tfs1 is a decent all around cam that most people are happy with Unless you got some extremely deep trump pockets theres no such thing as too much head for a sbf.
  9. Decipha

    Drivetrain Help with Check Engine Light after Transmission Swap - 1990 Mustang LX 5.0

    If you burnt the trace for sig rtn take pin 46 signal return wire, tap it and go to ground. See if that fixes you up. Otherwise your best bet is to just upgrade to a 94-95 mustang v8 automatic ecu. They are a dime a dozen, much CahEAPER and easier to find than the fox ecus, they dont have any...
  10. Decipha

    Done throwing parts at the ole girl

    first thing you need to do is listen for the fuel pump to prime and shut off at key on then verify fuel pressure
  11. Decipha

    2000 Mustang - Which torque converter do I need? (Still learning)

    it doesn't matter what torque converter part number it has. Its a 4r70w trans thats all you need to know. Other than the flexplate bolt pattern which is going to be 12". cheapest option would be to snatch the torque converter along with the trans your getting.
  12. Decipha

    1976 mustang 5.0 swap

    The newer the ecu the better. The 94-95 stang ecus are significantly better than the older fox ecu's. The only ones who say different have no experiences with them. If your doing just a stock swap your best bet would be to find a donor explorer. It has the 8.8 rear end. 4r70w trans which you...
  13. Decipha

    A9L Not Commanding Timing?

    the most likely cause of your issue is either a bad pip in the distributor or a bad tfi module be sure you replace the ecu relay as well - that is the very first step in diagnosing any ecu related issues regardless.
  14. Decipha

    Engine Uncertain MAF voltage

    you do know putting in larger injectors gives you 0 additional power. Unless you have a head swap or plan on spraying a dry shot theres no need in swapping the injectors
  15. Decipha

    Engine Which fuel rail do I need

    there is no vac line on that setup check engine light would be the tuners fault you will need some type of tune ob there regardless to disable the egr and thermactor
  16. Decipha

    Reverse gear grind 2008 GT Tremec RT-3650

    with the information given the only thing anyone can positively confirm is that it sometimes grinds when you put it in reverse have you verified the clutch is adjusted correctly?
  17. Decipha

    Engine Which fuel rail do I need

    ll work fine otherwise you can just mount your regulator by the tabk and shorten the return line
  18. Decipha

    Engine Which fuel rail do I need

    no i do not run a reference vac line but you should. If your boosted it will be required. The fuel pressure regulators job is to maintain the same delta pressure for varying manifold preassures so your INJECTION pressure is constant and doesn't vary. without the vac line hooked up your fuel...
  19. Decipha

    Engine fuel pressure regulator or fuel pump?

    Be sure to report back if you have any fuel pump failures. As odd as it seems it would be that pump pictured in the link above looks like a knock off. It appears dull in the pic and the genuine walbros are shinny. Just curious how it works out for you. Also, in my experiences fuel tanks...
  20. Decipha

    Engine Two problems fox dies when wot and...

    have you verified your air filter isn't clogged?
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