ignition to pull retard when i spray

[turboN4thGen]

is there an ignition that i can buy that will retard my timing when i spray NOS like a 50 shot?? i only want it to retard when i spray
thanks

 

[burnout]

I use the thumbwheel chip. You can set it at 18 degrees and you can probably spray a 100 shot on that timing as long as your A/F is alright.

Burnout