Rep Power: 0

Hey there guys, I just completed a y8 mini me swap on my automatic d16y7 in a 99 civic sedan. Its currently running on the factory y7 computer but with the y8 intake manifold, and cylinder head. I do NOT have any of the vtec stuff wired in as I want to get it running correctly before chasing that around (so in theory aside from the intake manifold it is currently stock).





I used the same transmission and short block and replaced no sensors on the transmission. The car drives fine (SOMETIMES feels gutless... but its an auto d16 so..) but I have the flashing D4 dance party on the gauge cluster. Once I scan it I get the codes P0730 (incorrect gear ratio), and P0715 (Turbine/input shaft speed sensor circuit) and when I clear it they will return within a block of driving.





I have the correct trans fluid level and double checked everything is plugged in. Ive been doing a ton of googling but there seems to be no solid answer for a cause of this issue. All I can find is it could be anything from dirty oil to incorrect engine temp sensor. So obviously this doesnt make sense to me. What could cause this? possibly a bad connection in a plug or is there a super delicate sensor that I maybe looked at the wrong way?

 
Rep Power: 228

It's possible that the vtec should be connected.

It controls the power and torque characteristic above 3000 rpm.

The transmission will be trying to gear for a certain amount 9f torque and power, it can not access at the moment.