cutting VE and IFR table in half for better timing control over 1.2 G/cyl
#1
cutting VE and IFR table in half for better timing control over 1.2 G/cyl
well my car on 7 or 8 lbs boost will bottom out the timing map n my pcm its 1.20 g/cyl. i have herd and read a few thing about taking your VE table and redude it by 50% same with the IFR vs. kpa table.
then when the car would normaly see you in the 1.2 range it would say you are in the .6 g/cyl.
my car on 28 lbs would read over 2.5 for g/cyl that would now read as 1.25 g/cyl.
so i took the timing table and took the .60 line and pasted it to .30 and the .40 line to the .20 line and so on. and then over .60 i just set it to 12* and ill finish working that out later
any one else do this?
then when the car would normaly see you in the 1.2 range it would say you are in the .6 g/cyl.
my car on 28 lbs would read over 2.5 for g/cyl that would now read as 1.25 g/cyl.
so i took the timing table and took the .60 line and pasted it to .30 and the .40 line to the .20 line and so on. and then over .60 i just set it to 12* and ill finish working that out later
any one else do this?
#2
It is called scaling a tune. Greg Banish talks about doing it in his book. I have done it on my car which was turbocharged and using a 4" LS7 MAF. You need to talk ALL tables that refer to airflow and fuel and cut them by whatever percentage you choose. I went with 65% as my multiplier.