Speedster329

i have a OBD1 gsr motor in my Civic si...im wondering if i can use a OBD2 Gsr ecu so i wont have to use a stepdown harness and use the OBD1 P72

Please let me know if this is possible. i do know that it will look for a crank sensor which i dont have so i know the CEL will be on so thats ok.

Thanks in advance fellow members!

94EG8

It will work, but you'll need to add a CKF sensor or perform the CKF trick.

Speedster329

so then only the CKF trick is needed ? if i dont do the trick will anything be wrong or perform differently or will i just have the CEL on the dash showing and thats it ?

as far as performance from obd1 and obd2 i believe they run the same

if any other info let me know guys thanks

94EG8

Yes.

It'll barely run if it's throwing a CKF code.