have a 96 gt, automatic, added march ud pullies,bbk cai,accel coil packs, stock w/only a k&n filter it ran 15:30's, we added u/d pullies, bbk shorties, o/r exh,bbk cai, ran 14:98, then added a bbk plenum and 75mm tb, didn't help a bit, then installed a 4:10 gear and since then the car just won't run, it is fine until you pop the throttle full open, then it just boggs, any ideas?

 

Check your sensors and run the codes also check all your vaccum lines!!!!!!!

 

yea it sounds like an intake issue. i doubt its your gears cause it would be making a godawful noise.

 

the gear is fine, and before we added the gear the car ran fine with the new t/b & plenum, have pulled codes, only code is excess exhaust from egr?that code was there before, and have replaced every part of the egr system? But since the gear install the car bogs at full throttle, has new bbk fuel pump,plugs, moto blue wires, also has mil eliminators when inst o/r exh