Hello
Does anyone know where I can find out what xdf I use for a 94 Chevy S10 Blazer with a 427 ecm? The motor is a 4.3 V6 with the batch fire spider injector vortec Injecton, not a throttle body type. I have tried OD OE E6 and $31, all do not work. Chip sticker 4088, 1617, 4892 and cover reads BHRJ.......Please and thank you!!