Hey guys, I am not new here, but I haven't been on in 6 years. Some changes in life made me park my truck for the most part for a number of years. Here's a little background on my truck.
Truck was originally a carbureted 1984 S-10 with a 2.8L engine. I removed that engine in 2010 and put in a GM crate 3.4 which is basically a bored and stroked 2.8. Physically almost identical. I had a 390cfm Holley carb on it. In 2013 I converted the truck to EFI with mostly 1991 S-10 stuff. The truck had headers on it and the exhaust was mostly original and it leaked like a sieve. It was LOUD!! I parked the truck in 2014 due to not having time to work on it and did nothing. I knew I needed to tune it, but until I finally fixed the deafening exhaust, I had no idea just how bad it was pinging. Now my goal is to get that fixed and to see if I can squeeze better fuel economy out of it. Currently I am lucky to get 15. I know it can do better.
Here is my problem. The truck has a 3.4L engine with 4.3 fuel injectors, 4.3 TBI and a bored out 2.8 intake. Obviously, GM never made a tune for this combination, and I don't know where to start. What ECM would be best for this application, and what bin file would be good to start out with? Has someone contributed one? Currently the truck has a 8062ecm in it from a 4.3L s-10 truck. it pings like crazy on 87 octane.
I am also looking at the purchasing the APU1 from Moates. What else will I need to really have a package that really works?
I apologize for my newbieness. I am trying to get info everywhere I can.
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