I just put in a b16b civic typr r motor in my 2000 civic si. My mechanic said it had no power with the pct (type r ) ecu so he put my si ecu back in and it ran better. Its bottoming out at 7000 rpms and now there is a jerk happening when i let off the throttle or give it throttle. Its pretty quick but i really want to use the pct ecu. Should i be? if so what could be causing the jerking and the low rev limit? also any tips on what i can do to the pct ecu to make it work? which one is better? sorry for all the questions, just confused and needing help. im using my stock tranny by the way. bought motor only.