Chasing Superchager Belt Issues/Engine Knock/Clutch problems

BruceH

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Shouldn't make that much of a difference.

It makes a difference. Depending on the sensor and exhaust system length it can be off enough to matter. I can't remember exactly how much. I want to say 2k but just can't remember the number. The pull doesn't start until 3250 so the trace looks longer than it is.
 

GT500KR

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made 550whp last time at the dyno
think its where its at for now. new fuel system... return system aeromotive eliminator pump and supporting mods. and go e85. maybe ditch blower for twin t's next year

and here is my latest work on my friends car
 

GT500KR

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still wont richen up till like 3k+ rpms :/ ideas?
been to dyno twice now.
says he cant do anything else.
 

BruceH

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still wont richen up till like 3k+ rpms :/ ideas?
been to dyno twice now.
says he cant do anything else.

Have him put the wideband sensor in the rear o2 bung. IMO you are seeing a delayed trace due to a slow wide band setup or location.
 

GT500KR

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It stays at 14.7 under wot at 3k+ then randomly surges in power like a kick in the ass and the wideband reads 11-10.1:1
 

AutoXRacer

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correct me if im wrong but under part throttle when there is boost... shouldnt it richen up too?

Not mine... I can climb up the RPM range to up to 5K (thats all I tested it up to) and stay at 13.5-14.7 AFR under part throttle low boost (5-7 PSI).
 

GT500KR

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Well went to take it to the track last night... Made it to tech... then car wouldn't start. Starter is messed up. Tried to push start it... it started but also snapped one of idlers right off the fucking timing cover!!
Wtf
 

AutoXRacer

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Dude, sorry to hear that!! Whats going on??

Are you planning to give up and just sell this car and start over with a GT500?
 

GT500KR

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$400??? Wtf
 

GT500KR

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Metco supplied the bolts and weren't long enough. Believe that's why it snapped
Common sight with my car
 

crownaviation

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I know another guy that had the same thing happen using too short of a fastener. Too long of a fastener will break thru the front cover tho so pay close attention
 
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