Going to run 100 wet shot nitrous

[st577]

2006 Mustang Gt, Predator U7140, V.9r04 Univ_Rev

Hi I am going to run a 100 wet shot of nitrous I am using the K&N 91 octane tune right now but I use the 93 octane firm shift when I race at the track. Will that be ok? It says to retard timing 2 deg. is that in the global spark? Thanks for your help. Mike

[Ampire]

Just from memory when I was poking around but theres a setting in the tune parameters that has retard timing as an option.