hey guys....i wanna run hondata s300 in my civic with b18b1 swap. we tried hooking hondata s300 to it and it sounded like timming was way off and sounded like it was misfiring but as soon as we plugged in obd2b ecu it ran fine. any idea?

 

It is likely that the s300 ecu you plugged in didn't have a calibration uploaded to it for your engine application.

Did you connect a laptop to the s300 system & upload a tune to it?

 

yes we uploaded stock ls map...its something to do with obd1 i think..it wont run on obd1 p75 integra ecu but it runs on obd2b teg ecu.not sure why it doesnt like obd1

 

It sounds like the issue is the vehicle's wiring or obd2 to obd1 ecu jumper harness you are using.

Is the check engine light on while running the obd1 ecu?
If so, what codes are being thrown?

 

jumper harness is fine...could it be something in dash harness?

 

Are your fuel injectors and dizzy obd2? Running a jumper harness to a obd1 ecu still having obd2 parts on the motor will not run right.

 

oh really?yes its got obd2 injectors and obd2 dizzy....

 

but why when we hook it up to my buddies 96 teg it runs it just fine! grr this car pissing me off

 

completely wrong. obd2 components work fine.

 

Bump!

 

TTT

 

yes this is completely wrong. I know this for a fact. I'm running obd2 dizzy and alternator and obd1 injectors in my obd1 civic. no problem. s300 hooked up too. works fine.

 

Really? Well...my bad then. Honestly thought it mattered since I had heard it several times

 

Im having a similar problem only thing is that i have a hondata s300 already in my car nd for some reason my car doesnt wanna start now. The car cranks nd everything it just wont start. Usually there is a green light by the usb port on the ecu, but now blinking red. I tried using my boys stock b16 ecu nd jumped my car, it turned on but as soon as i took the jumper cables out tge car shut off. Anyone know what can be the problem?

 

bump