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I’m having issue running a hondata, I plug in the jumper harness and plug hondata and it through me a code 4 and it didn’t wanna let my car rev pass 3,5k rpms put back stock ecu and it works fine my ca is a 2000 Honda Civic si Stock motor, right now i have 02 up and down codes don’t know if that has anything to do, probably not... any idea guys any help will be appreciated 🙏🏻🙏🏻
I’m having issue running a hondata, I plug in the jumper harness and plug hondata and it through me a code 4 and it didn’t wanna let my car rev pass 3,5k rpms put back stock ecu and it works fine my ca is a 2000 Honda Civic si Stock motor, right now i have 02 up and down codes don’t know if that has anything to do, probably not... any idea guys any help will be appreciated 🙏🏻🙏🏻
What program/ base map is on the Hondata? it sounds like a installation issue with the hondata have the ECU checked. Also could be a crapy conversion harness,
Copied from HondaPartsHero, "Trace your CKP wiring to the Ecu and make sure the adapter harness has the correct corresponding pins. I've heard of cheap ebay Ecu adapters having issues with this specific Wire portion"
This. Even if it's a good jumper harness, it needs to be gone through to make sure the pins are all nice and snug. The "B" connector (middle of the three) going into the ecu has all of the position sensor inputs on it, focus on pins 15 & 16:
Crank position sensor Hondata s300
