sounds like a programming glitch. When you step on the gas at that speed, does it downshift? If not, disconnect the (-) battery cable for a few minutes then reconnect it. If it's a programming glitch that should set it straight (reset the computer). Other than that, having OD on will cause that downshift lag or lack of downshift at those speeds.

 

Have it checked, and if it's normal have it tuned

 

Yeah it will downshift out of OD if I have it on. When I know I am gonna hit it, I will manually turn off the OD and them kick it. Btu that is when the RPM raise (as I know they should) but I dont get the thrust that I would expect from it.

The night they called to tell me the car was in, I ran down to pick it up & I hadn't driven one yet, so I took mine for a mile or so test drive....when I returned and the salesman asked me what I thought, thats what I told him..."It doesn't seem to get up and go!...."

Well I am gonnna take it in tomorrow, so I will keep you all posted.

Cheers,

Brian

 

Here is a first hand comparison based on my experience. My son had a 97 GT vert. His best time at the track was a 14.7 after numerous runs. I’d say the average times were about 14.9. My daughter’s 05 GT 5 speed runs consistent low 14’s with her best time 13.8. JMO. Both cars were stock with only a KN air filter in the 97.

 

My auto ran 13.8. Mine has no problem downshifting and going. Find out what the dealer thinks it is.