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Getting off the line. Help!

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Demid22

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Thread Starter #101
Yea i dont wanna tune it. Just see what its doing. Jon reviewed them. Confirmed IATs stayed low 100s for ths run. But he says im only making 16 lbs of boost. We had it dialed it in 18 before. Advice? Could this be it?
 


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Yea i dont wanna tune it. Just see what its doing. Jon reviewed them. Confirmed IATs stayed low 100s for ths run. But he says im only making 16 lbs of boost. We had it dialed it in 18 before. Advice? Could this be it?
Possibly higher da than when it was “dialed in” before. Possible belt slip. That’s a pretty small pulley. Smaller they are…. the more prone they are. Does it ever squeak at you?
 


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Thread Starter #103
Possibly higher da than when it was “dialed in” before. Possible belt slip. That’s a pretty small pulley. Smaller they are…. the more prone they are. Does it ever squeak at you?
Not saying it isnt slipping. But its a griptec paired with bwoody idler to get more belt wrap
 


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Do you have an idler? My car made almost no boost without an idler and the 2.69, now it makes all the boost
 


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Thread Starter #106
Do you have an idler? My car made almost no boost without an idler and the 2.69, now it makes all the boost
Yes i have an idler
 


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Canned fuel? 2k da is a bit up there
 


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Thread Starter #108
Canned fuel? 2k da is a bit up there
Pump. I always test it. Varies between e80-e87
 


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just leave off idle and stab it next time, 17-18psi, Smokey burnout
 


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Thread Starter #110
just leave off idle and stab it next time, 17-18psi, Smokey burnout
Ill try that
 


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I spun horrible any time I try to bring up the rpm, but I have a 3.70 rear gear and 315/50r17 mickeys on 17” beadlocks, I cut a 1.50 60’ all the time, should be better when I drop to the 3.09
 


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I don’t agree on the 2.75 thing. A 2.75 and lower with is similar to the 2.55 is quite a bit faster. But yes need to combat heat. If I Remember right he has a chiller.
Demonology tested on the dyno, but that was on a 2.7 blower, so.....

Hellno tested at the track and went slower but didn't have a chiller so....

Lots of variables. That MPH is really low though for the setup. I was trapping 137-138 on 93 with a 2.72 pulley.
 


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I thought op was still having issues with a bigger pulley too though?
 


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There has to be something wrong with the setup. Jon has my tune only car trapping 131mph with a down fuel pump at 41psi. My charger is full weight at 4640
 


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Personally I'd try a 2.75 pulley just to see. 2.5 and 10% lower should be like 20psi and he's seeing 16? I bet it's belt slip. 2.5 is just too small IMO.
 


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Personally I'd try a 2.75 pulley just to see. 2.5 and 10% lower should be like 20psi and he's seeing 16? I bet it's belt slip. 2.5 is just too small IMO.

In the beginning while my HC was still in the 10's maybe 10.5 or 10.6. and Josh saw then, that an idler was needed and a Bwoody was installed.

I have a n ATI %10 and a 2.75 Upper. 18PSI But I also used Q16 and I am going back to using it this year!
 


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Thread Starter #117
John didn't say anything about belt slip from my logs but I'll ask him and see what he says
 


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Thread Starter #118
Additionally we had it tuned hitting 18 lb of boost but when we had it tuned it it was winter time
 


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So this week you are 1/8th mile racing. Here is one of the logs. In this log you can see you let off twice during the run which will kill mph. I would have to go back and find a 1/4 mile run. As far as belt slip it should be black under your hood if it was slipping that bad.
 


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Demid22

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Thread Starter #120
Yea i had to let out. I was aiming at the wall lol
 




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