Hondata

your rpms are read off the cam rotation and your crank shaft is turning twice for every one turn of the cam so if your input shaft is turning with your crank when the clutch is engaged then it would be 2x what your tach. is reading.

Wouldnt that just be be twice your engine rpms?

I have a 99' civic si with a B18c1 block bored 40 over with forged pistons. A B16 head with integra type R cams and 11.5:1 comp. S300 with a P28 ecu. Ever since I put the S300 in the idle has been moving up and down during cold start untill it warms up. After it has warmed up it idles fine. Could ...

That did it! thanks for the help!

I figured i might have to do that. Thanks for the help though. I talked to my uncle who set it up when we put it in the car and he thinks he saved it on his laptop so were gonna see.

I closed all the windows in smanger but it didnt make any difference. Any other things is should try? It says this when i try to download the calibration though it stills shows that it saved it to my laptop but when i try and open it it says the samething.

When i try to pull my calibration from my ECU it gives me this message "floating point division by zero" and will not let me open it.Can anyone help me with this?