Be it a 5 speed or 6 speed you need to limit your boost in the lower gears to reduce wheel spin.
I would go out and play around with it and try to find the boost setting where you have the fastest acceleration in first and second by the time you hit 3rd go to the big boost setting.
Even at 335whp in my SVT (Quaife equipted) I would just roast 1st 2nd and part of 3rd on high boost but by using a remote switch I could lower the boost to where I got good traction in the lower gears then let it rip in the higher gears.
[B]1951 McCormick FARMALL M
2007 MINI Cooper S Turbo... new project car
1998 Chevy 3500 Ext cab, long bed, 4x4, duelly, turbo diesel
2004 Harley V-Rod.... sex on wheels
2011 Harley Electra Glide Ultra Limited