what would you set a nitrous window switch for revlimit is 6600 rpms going to be using mallaroy 685 box and what would you gap plugs at for 200hp shot i have tr6 and about 400 na hp with only 9.3 compression i have them gapped at .035 right now.
also how many degrees retarded for nitrous and what afr on wideband without it

 

6400 for best ET or 10 RPM before the shift point for longer tranny life

that should be fine

Alot will depend on what the base timing is at...but I would start with 8-10*

 

on a 200 shot we would start at base timming - 9 and AF is tricky it should be just a little richer than stock but you will have to read the plug for the whole picture. id say 12.2 would be a good starting point. Id also use a colder plug for a 600hp car try a 9 if it hates it step down. the diff from a 7 to a 9 is not much. we run a 10 on a 225 shot but the et heads like a 7 on the motor thats a 510 rwhp car.

 

fixed my typo's