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  1. 03SONIC

    96 Cobra SVT Engine Question

    Buy a built short block, you can send your heads out to be checked and gone through and get a good tune on it. PM me if your in NJ.
  2. 03SONIC

    Motor rough then stalled

    Welcome to making some power and shifting hard with a return less fuel system. Pumps on, pump off, this puts major stress on the FPRS because the FPRS see's these dips and tells the pcm to kick pumps on when rail pressure is low. You can work some of this out in the fuel tables of the time but...
  3. 03SONIC

    RPM dip braking hard AND high speed vib.

    Vibration did they index the drive shaft when they had the trans out for a clutch. The idle issue, your throttle plate most likely needs to be adjusted for off throttle position when warm or you have a lazy Iac (idle air control)
  4. 03SONIC

    Service engine light issue

    A lean code would not be from a Iac issue, the reason why the car stalls and the idle goes up and down is because you have a lean code and the PCM is making adjustments to ST fuel trims to compensate for a issue. Check make sure you have no vacuum leaks or hoses that blew off.
  5. 03SONIC

    Blew Diff seal 03 Cobra

    On my own car I picked up .02 tenths, same tire, same everything. No ass meter,exit only.:rlaugh:
  6. 03SONIC

    Blew Diff seal 03 Cobra

    3.73's make a noticeable change, we have done over 50 sets and all the customers feel it and love them street or track. :nice: As far as blowing the tire off, anyone running stock tires needs a reality check.
  7. 03SONIC

    How strong is an 03 engine?

    The bulk of the piston failure is detonation IE tune or a mechanical failure, fuel pump, etc. We have many customers cars running around making 650+ as daily drivers. Anyone looking to make 750+ needs to look into a built engine, ported heads and cams. The post asked about what can it take, not...
  8. 03SONIC

    How strong is an 03 engine?

    The crank has been over 1200hp, the rods over 800hp, the pistons over 800hp. The weak link is people trying to make this kind of power with mail tunes and poor fuel upgrades and or detonation. The stock block is tough and has good internals to handle 700+ providing the tune and fuel quality is...
  9. 03SONIC

    Possible transmission trouble

    Many people mis-diag this issue and spend money on adjusters and cables. My car runs 128mph in the 1/4 and shifts like butter on a stock cable and no adjustors or firewall quadrant. There is a TSB on this from Ford.....We have done many of these. FORD: 2003-2004 Mustang ISSUE: Some...
  10. 03SONIC

    2003 with the Tranny replaced twice?

    PM me the full vin, I will run oasis and see if anything looks funny.
  11. 03SONIC

    Blew Diff seal 03 Cobra

    Wow that is high, I am a Ford dealer and charge half that. For the price you have above, I would also do gears 3.73, 4.10. :nice:
  12. 03SONIC

    cobra backfire ?????

    Back-fire could be a few things, most ignition related than anything, plug wires, coil, do you have any codes (engine light) on. Many people need to get away from these canned tunes, example I had a customer come in with a 96 he had a blower installed on, he wanted us to tune it. After data...
  13. 03SONIC

    96 Cobra, White smoke after heat up

    Signs of a head-gasket. Does it smell like coolant out the pipes, do a compression test.
  14. 03SONIC

    DeFeo FORD/WICKED motorsports!!!!

    Thank you we try very hard to build the best and be the best. :nice: Whatever ya need hit me up.
  15. 03SONIC

    Roush My sorry dyno numbers...

    Yes first thing is first, get a custom tune on it and hit the dyno again.
  16. 03SONIC

    Fuel pump help needed

    That is rare, do you do cams or have a built engine.
  17. 03SONIC

    Gas pedal recall?

    Reply sent. Recalls are open regardless of miles.
  18. 03SONIC

    Roush My sorry dyno numbers...

    Who tuned this car? You are leaving some HP on the table. 12.0 is a little lean, not leaving much room for a mechanical issue, we like to see them 11.7 across the board. How much boost are you running?
  19. 03SONIC

    DeFeo FORD/WICKED motorsports!!!!

    Thank you Anthony. As posted we do it all, Whipple's, Kenne Bell, Centrifugals, custom fab work, full dyno tuning, suspension work, short blocks, long blocks, transmissions, clutches, you name it we do it.
  20. 03SONIC

    Gas pedal recall?

    PM me full vin I am a Ford dealer and will run Oasis to see if recall is open on your vehicle. :D
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