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Feb 3, 2007 | 02:18 PM

#16

zombie_46

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Joined: Jan 2007

Posts: 8

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From: Grand Forks

getting back to the original concern of it bogging down, it has happened a few times when i dont make the truck down shift to first but is in the boost and it will bogg down at 3800rpm and lose 300rpm so i dont really think it is totaly rpm related, but maybe load related, had 2 diffrent tunes from two diffrent companys and always did it with both after i put in the 2800 rpm stall and valve body!!! i am going to get a better
valve body any possibiliy that could be the problem?

thanks for the info
adam
oh my best was 1.7 60ft and 7.9 1/8th mile

Feb 3, 2007 | 11:42 PM

#17

Blurry94

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Joined: Jun 2003

Posts: 3,550

Likes: 72

From: Calhoun GA

Quote:

Originally Posted by zombie_46

...had 2 diffrent tunes from two diffrent companys and always did it with both after i put in the 2800 rpm stall and valve body!!!

Were these mail order tunes?

It's hard to diagnose a problem without seeing some hard data. If you haven't had it on a dyno, then it would be a good idea to take it to one, espcially with the mods you have. Datalogging engine and transmission info to help get your rig dialed in properly.

Another thing i thought of is that your converter may be going from un-locked to locked at WOT.