Ok..correct me if I'm wrong...and I know everyone will

. The trac lok is not posi traction as we know from years gone past. The stock trac lok is a "limited slip" which mean that there really is only one tire spinning until it over powers the clutchs in the differential. This is why at the track when you start to heat up the slicks, one tire spins and then a half second...which isn't that long, the other wheel starts to spin. Check out the tire tracks of a
stang with a good stock differential. the right wheel starts the patch then the left not long after. So, unless you have changed from the stock differential and the left wheel doesn't spin you should have nothing to worry about. JMO
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2004 DSG Mach 1 w/IUP 5 speed (Born on Date: 10/09/03)
Dyno - 1/28/04 (1300 miles)K&N Drop-in Filter, SAE - 273.8 rwhp 302.5 rwtq
Dyno - 3/6/04 (3400 miles)K&N AirCharger, SAE - 282.5 rwhp 312.6 rwtq
Dyno 4/22/05 304rwhp 326rwtq