russ or any one need info on trans tune 4t65e please help

i have a 88 fiero with a 1999 3800 sc engine headers, 1x cam , ported heads, intake and blower 3.2 pulley
trans is 2003 grand prix gt 4t65e stock 3.29 gear
I have have 1.00-1 in third gear and speedometer is correct I made adjustments to get them there but not sure I did it the right way
the problem I am having now is in 3 gear I am getting a rpm surge 50 to 100 rpm up and down
if you could look over my tune to see what I did wrong I would be greatful
tire size is 245/45/18
thanks

I will post tune below

Why is your gear ratio set to 3.66? Need a scan log & list what frame the issue is at.

Russ Kemp

I started with 3.29 I adusted the rev trans in tell I was able to keep 1.00 - 1 in third gear
other wise if I kept the 3.29 gear ratio with drive sprocket at 1.00 the it would bounce fom .98 to 1.00 in third gear
what should I do I know this is the problem just not sure how to fix it

It's normal to have the calculated gear ratio to vary from .98-1.00 in 3rd gear.

Russ Kemp

ok I will change it to 3.69 with 1.121 these get me to .98-1.00 in 3rd gear i changed the 1.00 to 1.121 and i no longer have rpm surge 50 to 100 rpm up and down but now all gears work good but 4 gear over drive when i put it in od and give it enuf throttle it drops to third but slips for a second or two then engages i was thinking that my pressures need to be rasied what do you think thanks for replying back brett wuebker

Read post #4 as to how I firm up the shifts; http://www.hptuners.com/forum/showth...highlight=russ

Russ Kemp