GT Performance Mods 2005+ Mustang GT Performance and Technical Information

Steeda Tests Underdrive Pullies

Old Feb 15, 2005 | 05:21 AM
  #21  
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Originally posted by 169stang@February 14, 2005, 6:33 PM
I know this much...They incorporated the underdrive pullies when they flashed my comp.
Can you tell me what change they made? I will have my SCT rep send me a new tune for the change. This is weird!!!

Thanks
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Old Feb 15, 2005 | 05:58 AM
  #22  
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I really don't know specifically. I know I was asked about them when they were loading the tune. Now that you ask this, it doesn't make sense for the pullies to have any bearing on the computer. The pullies are just a different size, thus slowing down the belt. I don't see how the speed of the belt can have any effect! You might want to call Steeda themselve if you get no answers from your guy. I can't tell you for sure that they are actually incorporated into the tune. I just know that they asked me about them when I was getting flashed...but, that may not mean a thing!
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Old Feb 15, 2005 | 09:46 AM
  #23  
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OK. Thanks. I am taking my car back to have the ECL code read and then I am calling my Xcal rep and Steeda at the same time.

I will update then so others don't have same potential problem.
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Old Feb 17, 2005 | 12:14 AM
  #24  
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Steeda wrote back almost immediately with some info on torque and timing. The installer tried everything but couldn't get the light off.

I conceded and took the car home. I flashed my OBD with the factory program and the light went off. Also, the engine stopped bogging down on me every two minutes.

Tomorrow I will try to reflash my OBD with the premium program and see what happens.

The Steeda Pulleys are great. Feel some low RPM power in second and third gear. Not a lot but some.
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Old Feb 17, 2005 | 04:18 PM
  #25  
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Originally posted by DozerzPony@February 17, 2005, 1:17 AM
Steeda wrote back almost immediately with some info on torque and timing. The installer tried everything but couldn't get the light off.

I conceded and took the car home. I flashed my OBD with the factory program and the light went off. Also, the engine stopped bogging down on me every two minutes.

Tomorrow I will try to reflash my OBD with the premium program and see what happens.

The Steeda Pulleys are great. Feel some low RPM power in second and third gear. Not a lot but some.
Dozer - what do you mean "bogging down" every two minutes? Is this the result of the CAI/SCT Tuner combo - or was everything working right until you installed underdrive pullies?
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Old Feb 17, 2005 | 07:42 PM
  #26  
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The engine was sputtering when I pushed the accelerator down---NO POWER. I was so mad.

Anyways, reflashed with the Xcal premium program today and still no check engine light---PHEW!!!!
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Old Feb 18, 2005 | 10:00 AM
  #27  
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Originally posted by DozerzPony@February 17, 2005, 8:45 PM
The engine was sputtering when I pushed the accelerator down---NO POWER. I was so mad.

Anyways, reflashed with the Xcal premium program today and still no check engine light---PHEW!!!!

Dozer - glad it's fixed and hope it stays that way.......any idea what the issue was?
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Old Feb 18, 2005 | 09:01 PM
  #28  
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No idea except that OBD is one testy *****. I think I will call her Cybil!!!!
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