Another EFI Question

[earlyhemi]

I'm trying to get more power from a 1990 dodge pickup while keeping the EFI system on the truck . I can't afford the holley EFI replacement and headers are a joke on the truck , It only ran right flat out . A rear end ratio change helped as did the cat back exaust but still no power on the highway , I even tried to boost the fuel pressure with the headers . I'd put in an older 360 but I'm told I'd need the matching computer , Is this true? Chrysler also said a hotter cam Is not possible because I can't chip the computer to match. I know you are probley of the EFI question's, but what can I do??????????????