I have a 89 crx si with a 91 ZC engine. Just installed a 88-89 integra computer. Went for a test drive. Good until getting on it to about 7000rpms. Let off the gas and begane to backfire then died. Tried to start but would only run for a few minutes then now it cranks but not running. When trying to start it sometimes backfires. PLEASE HELP ME OUT FAST!!!! Put old computer in and the same.
TIMING RIGHT ON
HAS SPARK
FUEL PRESS. ?

is your ecu throwing any codes?

Figured it out it was the screw that holds the rotor onto the shaft. It must just worked itself loose and fell out. loctite the hell out of it. Boy am i happy!