Alright guys, car is a 93 z28 with 130000 miles. At wide open throttle car acts like it hesitates or chokes before launchng and then falls on its face. Shifting into second you get a little funny business and on she goes. So far this is what i have done....

Fuel filter
Tune up with Ac's
MAP
TPS
TPS pigtail

If you hold at 1500 and launch no immediate hesitation but boggs down quite a bit.