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Old 07-04-2006, 12:46 AM   #1
chaplainracer
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Default New Procharger + belt slippage

Please help! I just installed a P-1SC, 3 core, 8# Procharger. It runs good, makes good power with the generic chip, but the belt slips above 3500 RPMs--especially with the AC on. The car is a 2003 GT with only 8K miles. Could my tensioner need to be replaced this soon? Please help!! Suggestions?
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Old 07-04-2006, 12:56 AM   #2
nanaki
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Default RE: New Procharger + belt slippage

define "basic chip"
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Old 07-04-2006, 01:42 AM   #3
chaplainracer
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Default RE: New Procharger + belt slippage

Procharger burned a Diablo sport chip for a stock MAF, Longtubes, and offroad X pipe. I plan to get it dyno tuned next week at FastSpecialties in Vancouver, WA. It runs OK now, but I assume that a dyno will net much better efficiency.
Thanks for any input!
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Old 07-04-2006, 02:02 AM   #4
mustang_montana
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Default RE: New Procharger + belt slippage

check to make sure the blower pulley is aligned perfectly with the rest of the pulleys, and i suggest a gatorback belt as your next purchase. im pushing 9psi on my vortech with no belt slip. get a gatorback belt, works like a charm.
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Old 07-04-2006, 02:12 AM   #5
chaplainracer
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Default RE: New Procharger + belt slippage

Where do I purchase a Gatorback pulley? What is the difference? The Procharger instructions were very vague. I put a washer in between the alternator and the offset bracket. Was this a mistake? It did not specify to do this in the instructions, however, it was in the same package as the offset bracket. I was worried about this. Could it misallign my pulleys enough to cause slippage?
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Old 07-04-2006, 02:20 AM   #6
mustang_montana
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Default RE: New Procharger + belt slippage

yeah that washer might have screwed up the alignment. and you can get a gatorback belt at any parts store, just bring your current belt with you to get the right size, or the p/n of your current belt so they can cross reference it.
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Old 07-04-2006, 04:27 PM   #7
Birdieman4
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Default RE: New Procharger + belt slippage

I think your tensioner is suspect, but you belt may also be slightly too big. Going to a 1/2' smaller belt might do it. Also, you could sandblast your current peuuley for more friction. I have had good luck with this.
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Old 07-04-2006, 10:14 PM   #8
chaplainracer
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Default RE: New Procharger + belt slippage

Does any company make a high-strength aftermarket tensioner? I roughed up the pulley with sandpaper and a file... going for a testdrive in a few minutes. I can't imagine that a smaller belt could be installed. The Procharger belt just barely makes it on. Thank you all for your help and suggestions. Keep 'em coming!
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Old 07-07-2006, 03:35 AM   #9
cubsalltheway
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Default RE: New Procharger + belt slippage

I had the same problem with the a/c on with my procharger. I can't wait to see what new information you find out, cause I am stuck.
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Old 07-08-2006, 04:00 AM   #10
chaplainracer
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Default RE: New Procharger + belt slippage

Problem resolved!!!! I installed a new tensioner and all slippage is now gone. Wow! This Stang is fast!!! Thanks for your suggestions.
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Old 07-08-2006, 04:00 AM
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