What's the best way to set the cam sensor to 250 deg BTDC for Terminator X install?

[socalgn1]

I know how to set the cam sensor for the stock ECM at 25 deg ATDC- what tips/tricks are there to set it for the Holley system's requirement of 250 deg BTDC?

 

[Jason dcpt]

There is a math equation I have it written down. A member here gave it to me. Do a search the thread will come up. If not I can get it to you this weekend.