One step colder spark plugs. Maybe some new wires also.
I am going with an oil pressure and nitrous pressure gauge too.
Stormin' Norman 2000 SVT 17" AT Italia Spa w/ Kumho 215/45-17 VCN-2000 Eibach Springs Bassani Best #'s so far- 268.5HP and 275.8 ft-lbs at the wheels #463/2150