ok so my 91 ls ha a jdm b16 a and ive been driving my gs for about a year while rebuilding the la well i just brought it out after finishing her and i know when i first swapped the engine the b16 got up and movrd .... but now for some reason its almost as good as a sohc . so this is what goes on ill hit the gas and around 5200 when v tech should hit it sounds like it but the power isnt there and when the throttle is wide open around6300 it falls flat on its face but if i go half throttle i can get up to 7200 befor it falls again but i know it used to hual now i cry myself to sleep cuz i cant figure it out usually im good at fixing stuff but this one got me please help thanks all