So I've had this thing running about 580 rwhp, and 590 rwtq, for about a year now. Did some 1/4 mile tests, and some 0-60 stuff, but always on asphalt. Tire spin is a safety valve. Got about 55,000 miles. Car is old, just like me..2001 GTS.
Today I nail it hard in 1st gear, and I'm on this sort...