well curious did you swap the C4 in there cuz that tranny wasnt offered. a C6 was though.
now to your question. once you have done these mods you might replace your O2 sensor then disconnect the battery and let the ecu reset itself . then reconnect and drive in various conditions for 30 -45 mins. this will help the ecu relearn the changes that have been made. Might also get the codes pulled before you reset the ecu to see what it thinks is going on.
For Sale - 94 XLT 357/E4OD Trans-go stage II
6" Stage II ProComp,35" BFG/AT 4.88 f (aussie) / r (open) / Custom Sliders, Custom bumper Warn HS9500, Edelbrock truck upper/lower,JBA headers,Custom Y pipe hi flow cat & Full 3"