As the title says I'm new to building and tuning LS engines.

I have a 01 Silverado 1500 single cab short bed 4.8 4L60E 3.73 limited slip.
Current mods
Cold air intake
Throttle body spacer
Throttle body coolant bypass
Dual electric fans
EGR delete
Cat Delete
Diablo I2 tuner

I'm looking for advice on tuning. My tuner allows me to change timing, shift points ect.... Most tuners I've messed with just had stock, economy, towing and performance settings. So I'm looking for advice on custom tuning.

I already know some of you will be knocking on me for the throttle body spacer and the cold air intake. It's all good though.

I'm also in the process of building a 6.0 and 4L80E out of my old 02 2500 HD. Witch I plan on running 4.10 locker with when I'm done. Witch I plan on dropping off in my lil single cab.

All advice and or knowledge givin to me for tuning purposes will be greatly appreciated. I'm looking to use my current 4.8 setup as a learning experience for when I'm ready to drop my 6.0 drivetrain off in my truck.

Thanks in advance for the advice and knowledge I hope to learn.