I currently have an electronic cobalt speedo from autometer thats wired off of the ecm. I calibrated the speedo as per autometer and it works fine. However, i'm ditching the ecm and installing the fast ez fuel injection retro setup for tpi. With no ecm to convert the signal for the speedo i went with a dakota digital converter. I need to know what the stock ecm converts the signal to in ppm. I don't know if it's 4000 or 8000 ppm(pulse per mile). thanks.

 

700R4 4000 ppm