Proper Ignition Timing?

[88fivepointoh]

I got code 67 after reseting the computer and running the car around the block hard and idleing and everything fully warmed up to its potential with that stat... I plan on getting rid of that stat this weekend. this is what i have done to my car. trickflow upper and lower, 65mm TB with spacer, F cam, 1.6 to 1 roller rockers, equal length headers, h-pipe, flows, msd coil, holley anihalator TFi module, #24 injectors with pro-m 75mm mass air, bbk 155lph fuel pump, k&n, A3M1 ECU, etc. i have thefuel set to 40lbs with vaccum off. maybe i should raise it to 45 but i heard guys with drivability problems.. but then again every car is different. could that stat cause my code 41 lean fuel constant?