Metco pulley results

Discussion in 'SRT Hellcat Performance' started by Tweaked, Oct 4, 2015.

  1. Tweaked

    Tweaked Hellcat Member

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    Installed 2.75 pulley and took car to the track. Now remember the altitude here is 3200 feet. D.A. was 5875. Stock boost was always around 9 pounds. Before pulley best was 11.97 at 119 mph. After install boost is now 13 pounds. Car picked up 6 mph. Ran an 11.57 at 125. This was without a tune of any sort. Car ran smooth Will look at tuning it at a later date.
     
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  2. 70Cuda

    70Cuda Yep, its got a HEMI

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    How was the install??
     
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  3. 70Cuda

    70Cuda Yep, its got a HEMI

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    did you lose any power off the low end?
     
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  4. Tweaked

    Tweaked Hellcat Member

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    The install was not bad at all. Used the information given on this forum. There was no loss of power on the low end what so ever in fact I think it picked up power across the entire rpm range.
     
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  5. hellcat1

    hellcat1 Gold Member

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    So its safe to say your having zero issues with the new pulley without the tune,, Have you driven WOT yet.
     
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  6. Tweaked

    Tweaked Hellcat Member

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    Yes wot took it to the track. Maximum boost was 13. Car did not miss a beat. Now if you live at or close to sea level and your stock boost is 11.5 then add this pulley and boost is now 15.5 you would more than likely need a tune for sure. Will tune this one later to see what else is left in it.
     
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  7. hellcat1

    hellcat1 Gold Member

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    How do I find out where I'm at for sea level...I so want to do this mode... Did the supercharger get any louder, and is this your only mod
     
  8. Tweaked

    Tweaked Hellcat Member

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    WWW.whatsmyelivation.com. It seems you can hear the supercharger whine with less pedal applied. I dont think its any louder just can hear it earlier. I do have the afe cold air intake as my only other mod.
     
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  9. hellcat1

    hellcat1 Gold Member

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    That's the other mod I have,,, And the throttle booster........Did you did the job your self
     
  10. Tweaked

    Tweaked Hellcat Member

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    Yes i did the job. You can follow the how it is done on this forum. I did not remove the entire supercharger just raised it up. Like what was mentioned, makes the job eaiser as not as much to remove.
     
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  11. hellcat1

    hellcat1 Gold Member

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    Any hand ups
     
  12. Supercharged_Fun

    Supercharged_Fun Silver Member

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    That's pretty awesome.
    Who are you going with to do the tuning?
     
  13. Tweaked

    Tweaked Hellcat Member

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    I will go with someone like Hemituner.
     
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  14. huggytree

    huggytree Gold Member

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    how much life do you think it will take out of the bottom end of your engine? your pounding it more

    thats why id avoid things like this....its like throwing out the warranty
     
  15. pinetreecat

    pinetreecat Gold Member

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    Perf pages gives you the A/F ratio. At WOT it should be 11.0 plus or minus .5 if it's running higher than 12.5 then you likely need a tune.
     
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