belt slipping

  1. S

    2017 Mustang V6 Procharger Odd Dyno Graph

    Hey guys. New member here. I know most of you drive a V8, but maybe you could help me here. As the title says, I drive a 2017 V6 with a Procharger. Other performance mods include a pypes axle back with a custom x-pipe, catch can, 65lb injectors, NGK 6510 spark plugs, and tuned by MPT running 91...
  2. S

    Need input on belt size

    My 03 Cobra currently has a 2.85 pulley on it. I just got a 100mm aux idler, and 3 90mm replacement pulleys (dual bearing). I plan to install tomorrow. Do I need a new belt? If so what length? I've looked at the belt charts online but I'm not really sure what i need.
  3. spacoli

    battery light on and off

    got a o3 cobra with 71k battery light comes on while driving, if I play with the throttle it will flicker and go off sometimes, also when I start the car up , mph and rpm gauge needles go all the way to redline then come back then the rpm gauge is normal, seems like its resetting, any help and...
  4. K

    Belt slip issue, 2.9L whipple cobra. Any help appreciated

    Ok I have an issue I need help solving, all guys with 2.9L/3.4L whipples feel free to chime in. My car was in the process of getting tuned and has massive belt slip after 5300-5400 rpm. car noses off from 26.5psi at 5400 to 14psi. (Made 690whp at that point, so much more to be had ) The...
  5. B

    Anyone have a COG belt pully system on an 03/04 cobra?

    Hey everyone. I have a 2004 Cobra and recently installed a whipple supercharger, camshafts, and valve springs. I'm running around 13 pounds of boost right now with 586 rwhp. I have noticed that the belt is slipping, and tried switching to a gatorback. It also slips quite noticeably. I was...

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