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Is my belt slipping

bandook

bandook

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There is some residue on the side of the overflow tank. And the MAP and calculated boost fluctuate a little on a wot pull, while my MAF steady climbs. Just looking for confirmation before I buy a belt from someone who's experienced this before. I'm running a 3 inch pulley and current belt is
653 - GTP/GS/SS supercharged with 3.1 - 3.5" pulley (65 7/8")

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Should I drop to a 65 1/2"? That's the next size down but it's only 1/4" difference.
 


Sorry, formating got me again. Current belt is 65 7/8 from zzp.

Is there a good replacement I can get from advanced Auto or somewhere local? I've been searching for awhile but haven't found it yet.
 
those dots of some type of fluid are from a coolant or axle leaking grease, belt catches it and slings it. could even have a stripe under the hood.
 
Only thing leaking is oil pan. Slow leak. I put a smaller belt on it anyways.

Looking at one of your scans what does the MAP do at 100% throttle? I really haven't paid much attention to it because I had a 1 bar sensor on. I put the 2 bar just to see boost. I hit 14psi. But it kinda fluctuates up and down even though rpms are steadily increasing. Maybe it's normal, dunno.
 
you need to change a map setting or two when you swap the map out. best to get a sc file for your car and compare it with your tune.
 


Scottydoggs said:
those dots of some type of fluid are from a coolant or axle leaking grease, belt catches it and slings it. could even have a stripe under the hood.
Click to expand...
Like This? lol
30f0f60c918fc9bfe84b931bfd025053.jpg


Sent from my SM-N920V using Tapatalk
 
Nice chit stains! I pulled the hood insulation/whatever off a few weeks ago. No farts stains here. 😆
 
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