So after dealing with the wording on my EXP I started to realize it wasn't such a big deal to work with. And while I would really love to put carbs on the car, I do have everything for the HO efi. But I don't want the EGR or smog pump on the car. I'll be keeping a cat, a more modern better one. My question is, would the car still run right without them or will the ECU need reprogrammed. Bear in mind I intend to put something like a MSD on the car. What about the xr4ti ECU, would it have problems without the EGR it smog pump?