Whats wrong?

[chadly]

At WOT in 3rd gear my car seams to hesitate at about 4500 RPM's for a second. I dont know why it does this. Could it be because I had the OD on? You can see it in this video:

http://www.youtube.com/watch?v=ncKbPw0i_iA

 

[97blklsc]

Chadly,

Mine does the very same thing, at the same RPMs, though in second gear.

I believe your car is geared differently, with a 4.10 rear axle ratio, correct?

Mine is stock rear end (3.27), so is there a chance that the hesitation we're seeing is torque converter lockup set for a certain speed (yours would have to be higher than mine). I would think that lockup would occur earlier than this in both your car and mine, but when I asked Lonnie about this he suggested that was the cause (Lonnie did my tune).

Either way, I'd like to know the actual cause.

 

[Roadboss]

I think you need a full dyno tune as no two vehicles are alike