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View Full Version : Tuning help with Ostrich 2.0 and '92 Chevy G20 350 TBI with LPG installed...



Dunksterp
06-15-2020, 04:18 PM
Hey guys,

You helped me out in a previous post here and advised me to grab the Ostrich 2.0 and the required gubbins.

http://www.gearhead-efi.com/Fuel-Injection/showthread.php?8819-92-Chevy-G20-350-SBC-TBI-with-LPG-installed

I've now purchased this and got it all set up and installed on my 299 ECU.

I've successfully loaded on a BIN file : AWLF 92 C-G-K Truck 5.7TBI 700r4 california.bin from this thread : http://www.gearhead-efi.com/Fuel-Injection/showthread.php?380-16146299-ECM-Information-99&highlight=16146299 and it started 1st click of the key. So happy that's working.

Now, onto my tuning... My fuel is controlled by the LPG system, so is the only thing I need to edit going to be the main spark advance vs rpm vs load table?

I saw there was a natural gas conversion bin file in that thread, however there are A LOT of changes from the standard BIN and I'm concerned that are completely empty tables, like the Maximum knock retard vs RPM (in WOT) and Max knock retard vs map.

I was considering just copying the Spark table from the Gas conversion and pasting it onto the standard BIN file. Would this be a mistake?

Oh, I also have a wideband O2 sensor to make sure my AFR is good, is it possible to wire that into the ECU?

Many thanks for your help so far. It's hugely appreciated.