start up help 08 silverado 5.3 and tuning advice??

[chevyguy1987]

so i need some impute i have an 08 chevy silverado on start up it crankes right up for the most par it seems a little on the rich side tho. so it seems a little hesitant at firt but it fires right up but right after it fires right up it has a really bad iratic idle like the timing is way off it seems like its better when i run on my ve table but when i put it on my maff table that's when it really bounces around and id like to runn off of both since it really has the most torq and power on both whe runing wot i know i have alot to work on in my tune yet and im still a nub but im still learning we all have to start somewere 08 chevy silverado 5.3 brian tooly race cam shorty headers dod k and n any pointers help

[NotSure]

Do you have the right MAP linear and offset settings for the sensor that you are using?

What injectors do you have and did you enter the data for them?