new to this forum/ car falls flat

[phagen28]

Hi I am new to this forum. also new to the turbo buick. my car is 87 GN. have installed a scanmaster, walbro 340 fuel pump w/hot wire kit. another set of stock injectors and a custom chip to match, k&n air filter set up, adjustable fuel pressure reg. The problem i have been chasing since i bought the car was a bad bog coming off an idle.with these new parts that is gone but now the car falls flat on its face just before it shifts into second gear. the boost seems to max out at 10lbs (replace the boost guage too)while this is happening the scanmaster always reads 4-6 degrees of retard. i will have to report the complete set of numbers from the scanmaster but i have noticed that the o2 flutuates alot but does spend alot of time at or above 800.my area is Worcester Ma so i do know you're close.Does anyone have any thought with what i got for info. will report back with a full set of numbers
thanks
Paul