its a 91 Civic Hatch It has a 92 1.6 and I have a 7.5 LB Flywheel and stage 3 puke clutch with poly mounts and a vtec head I have already converted my car from DPFI to MPFI and from OBDO to OBD1 that should give you everything you need to diognose the problem oh yeah and MSD power pack and coil um I also have my battery in the back of the car any other ?'s if so I will answer if you could only tell me why my Sh!t is acting up Its a 5 speed and I do have the 4 wire 02 sensor.