A thought...

[Arnaldo Echevarria]

I'm thinking of putting fuel injection on my pontiac 455 in a '78 trans am.

I'd like to buy the 900cfm throttle body from holley that already includes:
1. 4 injectors, 85lb/hr (kinda like a tbi 4 barrel)
2. tps

All I'd need is an interface to these four injectors, a computer, couple of
sensors (map, temp, ego, etc).

I'm thinking, instead of going the 68hc11 route, using a pc.  Instead of
building a a/d and d/a board, use two parallel ports.  That would give me
8 ins and 8 outs.  Timing would be resolved by the computer, hell, 386/486
motherboards are cheap.

Question 1: Am I crazy? Anyone see an inherent flaw in all of this?

Question 2: I need a good power supply to give me +12,+5,-5,-12. Should I 
pull the car's power, use a 12/24 volt transformer, then get a couple of
voltage regulators to give the voltages I need? Car voltage lines are 
extremely noisy, any ideas on how to clean the signal?

Question 3: Any suggestions, ideas, or people interested?

Arnaldo
aec at ao.net