Hi all, I recently transplanted a healthy roller cam 88 Police 350 into my my 88 K5 Blazer. Unfortunately, the cam is bigger than the EFI likes, so I've been trying to build the ALDL interface at http://www.techedge.com.au/vehicle/aldl/160/aldl_hw.htm. OK, it's built, but doesn't seem to work. One misinfo item is that it seems 12 V is from pin C rather than H (my H is blank and the wiring diagram supports this). Anyone have any other solutions (other than buying a scanner - the point here is to be learning something I don't know as I do this) for pulling engine info? I have the codes (lean) and just need the rest of the info so I can start working out the changes to the factory ECM to get this to work better. The engine is quite healthy (not as good as when it had a carb, but not bad) until it shifts to open loop mode, then it runs about as well as stock did until it gets warm enough to ping (under > 1/2 throttle accel), then timing is retarded and it runs less well until a shutdown/restart is effected (hey, is my ECM running Windows?). LOL TIA, Eric D.