Hi Brad I prefer to mechanical mods first, tailor software to match. In my case have a 86 tpi with a 89 eprom on a 383. Remove cold start injector. Increased inj to 24 lbs. Installed Crane compucam. Modified fuel pressure reg to adjustable, set to 50 psi. Bypassed egr error signal in code. Using vette timing table. Have to find deaccel valves - hope to do so soon. Vance