ever consider a shift kit? I had one in my 02 Lightning and it worked real well at wot

Its not a tranny issue!
the tranny shifts great with diablo's perameters

i'm a girl what do i know lol but on a more serious note ..there is a fantastic older mechanic in sherwood park who has worked on mustangs for years if you ever want to call him let me know. He will try to help out

i wonder if its at fuel problem too much at wot maybe?

PROBLEM SOLVED thanx to the boys and girls at Gotstang who led me in the right direction rockon:

Well,what was the issue?? smack:
Could be some good info here!smokejump:

"the diablo tune ads spark advance and removes fuel in the 4-7k rpm range"
so i added 8 points of fuel and bang she pulls hard now all the way i put my 70mm TB back on and bam shes a wild machine now!rockon:

Nice!!! rockon: Glad you got it figured out!