I cruise with about 14.6-14.7 volts and it seems to drop a bit when I get on it to about 14.5 volts. At idle it sits around 14 volts with my head lights on.
I am please with the results for about 20 min of work and about a dollar at radio shack
FOR SALE
2003 GTP, L36 swap, TOGs extremes, ZZP stage 3 heads, SSIC, ZZP Ported Blower, 3.0/3.2 pulley, XP hot cam w/ 105#, 42.5# injectors, N* w/ 85mm MAF, Meziere Water Pump.