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wrong ecu works better than right one?

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1gchallenge

10+ Year Contributor
45
0
Mar 10, 2011
cheyenne, Wyoming
i just did a turbo swap to a 90 talon. i wired everything in for turbo like knock, maf, resistor pack. i put the 90 tsi ecu in and the car wont start. i replaced many sensors and finally i tried a 92 non turbo ecu out of giggles and it started and ran good...i didnt swap any wires from 90. i also have a 91 gsx ecu it starts with but runs bad even with 6 and 14 swaped. i just put the 90 na ecu in with 450 injectors and it starts revs and idles fine?! Is there anyone with any info on this at all???? i cant find any info! Please let there be someone who has the answer ### ive even torn the wiring harness apart looking for bad wires and checked all wires in the connections to the ecu. Ive posted about this before and all i got was the wrong ecu WILL NOT WORK...BUT IT WORKS BEST. so i'm super confused.
 
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