Mean Green Z28
March 6th, 2022, 03:23 AM
Hi Guys, been a while! Turbo Silverado Sold and CTS-V Wagon in the Garage now.
Dabbled with helping tune a bit a few years ago with my Truck, but please consider me a beginner who's eager to learn with the new ride.
I just installed a 2.45" pulley and FIC1200 injectors along with a FlexFuel Sensor kit.
I copied all the tables from the excel spreadsheet from their website (https://fuelinjectorclinic.com/GM-DATA/EFI-LIVE-1200) and when it got to the Base Fueling table (B4001), the max flow was limited to ~126lb/hr.
After some research here, I scaled the table by 65% to get the max possible range in the table (got a max of ~120), and the IAT multiplier (B1213) by the same ... assuming IAT modifier will work on this ECM instead of going to the stoich table? Any other tables need to be scaled?
It's still lean (o2 showing ~50-100mV) at first start so guessing its due to the extra airflow from pulley swap, and still being in open loop?
My plan was to keep bumping up the entire IAT multiplier table until I get a decent idle before it goes into open loop. Acceptable?
Along with that my other question is with the tables I modified using the FIC spreadsheet ... do I need to scale any of those?
-Injector offset table (B1211)
-Short pulse adder (B1203)
-Min Inj Pulse Width (B1204)
What do I do with the injector information and flow sheet they sent with this set of injectors? Does that information get plugged in somewhere to equalize flow between cylinders? I did keep track of where each injector went during install. Can I use the Slope Flow matching data to modify B1520 (divide 1200 / ** to get the mutiplier)
Thank you!
Dabbled with helping tune a bit a few years ago with my Truck, but please consider me a beginner who's eager to learn with the new ride.
I just installed a 2.45" pulley and FIC1200 injectors along with a FlexFuel Sensor kit.
I copied all the tables from the excel spreadsheet from their website (https://fuelinjectorclinic.com/GM-DATA/EFI-LIVE-1200) and when it got to the Base Fueling table (B4001), the max flow was limited to ~126lb/hr.
After some research here, I scaled the table by 65% to get the max possible range in the table (got a max of ~120), and the IAT multiplier (B1213) by the same ... assuming IAT modifier will work on this ECM instead of going to the stoich table? Any other tables need to be scaled?
It's still lean (o2 showing ~50-100mV) at first start so guessing its due to the extra airflow from pulley swap, and still being in open loop?
My plan was to keep bumping up the entire IAT multiplier table until I get a decent idle before it goes into open loop. Acceptable?
Along with that my other question is with the tables I modified using the FIC spreadsheet ... do I need to scale any of those?
-Injector offset table (B1211)
-Short pulse adder (B1203)
-Min Inj Pulse Width (B1204)
What do I do with the injector information and flow sheet they sent with this set of injectors? Does that information get plugged in somewhere to equalize flow between cylinders? I did keep track of where each injector went during install. Can I use the Slope Flow matching data to modify B1520 (divide 1200 / ** to get the mutiplier)
Thank you!