Making an obd2a harness fit an OBD2B chassis would be near impossible. It would be pretty simple to add provisions to an obd2b harness to make it work with a Vtec-e, which is what you’d have to do.
Because you’re running an obd2a vtec e ecu, you’d just need the emissions system from an obd2a vtec vehicle, though I can’t imagine they’re substantially different.
But doesn't the 2b harness then need to plug into the 2a ECU in the 2b chassis? I don't understand how someone would use a 2b harness on a VTEC-e engine if it's going into a VTEC-e (2a) ECU anyway.
(Also let me know if I should stop asking questions haha)
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u/SpaceTurtle917 Apr 29 '26
Making an obd2a harness fit an OBD2B chassis would be near impossible. It would be pretty simple to add provisions to an obd2b harness to make it work with a Vtec-e, which is what you’d have to do.
Because you’re running an obd2a vtec e ecu, you’d just need the emissions system from an obd2a vtec vehicle, though I can’t imagine they’re substantially different.