I have a 91 Acura Integra, It has a B18b1 swap that i put into it... The motor has 88,152k Miles on it.... The motor was really strong when i first installed it and would scratch gears all the way to 3rd....(Stage 2 CM) But about 3 months later the motor kinda felt like it lost some power.. i kinda beat up on the motor so maybe that has something to do with it.... What could be some reasons of the lost of power....

99 B18b1 Swap
AEM Cold Air Intake
DCS 4-2-1 Header
2.25" Exhaust
ES Oval
Stage 2 Clutch Master ....