first off the car runs great, better than a stock L03 should. i gave it a complets tune up, new plugs, wires, coil, cap and rotor, ICM, fuel filter, open air filter.

when i launch the car is great until the end of 1st gear where it just kind of sputters and pretty much stops going until it shifts then picks up again. its an automatic.

could this maybe be clogged injectors? distributor?fuel pump? i really dont know what it could be. any help would be appreciated.

it also has the exaust cutoff where the cat is under the pass. seat with a glasspack instead of the glasspack. could this be anything to do with it? i doubt it tho.