I'm a newbe with lost of reading.

Have read every thing I can find and still can't find what area to change air fuel ratio while in close loop.

Have found and "Corrected" cold starting, accel problems, popping back in intake, rough idle, pinging, time to go into close loop.

Can't find the area to correct Idle 140 blm and 120 blm rest of the area.

Also, what is DFCO?

 

Deceleration Fuel Cut Off

It limits fuel on decel under various conditions to drop engine and vehicle speed, prevent afterfire (exhaust popping), and prevent excessive HC emissions.

What basic scheme and maskfile (ECU/TDF) are you using?

 

C.A.T.S. Tuner RT
with TunerPro to do PROM

ECM 32 stock prom AANM 165

 

140 BLM at idle means that the ECM is adding fuel. 120 BLM in other fuel cells means that the ECM is taking fuel away.

You can add more fuel yourself by increasing the values in the MAF tables, this will decrease the BLM values,, or vise-versa.

You can add more fuel by decreasing the fuel injector constant, this will decrease the BLM values,, or vise-versa.

The above coupled with the fact that there is a top limiting value for each of the 6 MAF tables, it is easier to decrease the MAF values than increasing those values. The maximum MAF table values for the top cell in each table is about 10% above the stock values.

I would recommend that you decrease the fuel injector constant, maybe about 10% max at first, (its located in the constants table) until the idle 140 BLM is close to 128 (this will decrease this 120 BLMs also), then uniformily decrease the values in the 6 MAF tables to get all BLMs in the 124 to 132 range.