Originally Posted by +fireamx
I'd say with a digital stopwatch. Since you have an automatic, that means you have at least 1 hand free to operate it. Just pay close attention to your speedometer and click it off when you hit 60 mph.
Unfortunately, on the dragstrip you only get 60', 1/8 mile, and 1/4 mile times.
I have no actual experience with a G-tech pro. But in my observations they tend to be slightly optimistic. With that I mean, when ever I hear somebody quote a 1/4 mile time for their car clocked by a G-tect device, it usually sounds a little faster than it should be.
I tend to agree but I've put the Xfire side by side with my slightly modified 944 S2 and the S2 pulls a 6.4 0-60. I'd probably add a couple tenths a second to that maybe since these devices are probably not the most accurate way. But who knows. Either way, both my cars are quick and are going to get much quicker soon.
I have a 7psi supercharger for my 3.0 4 banger in the Porsche which should put me close to 350hp at the crank. And I'm saving up as we speak for the TVT 300 kit.
Oh yes my pretties..........................oh yes.
Oh yeah I do have the Borla exhaust and the Renntech CAI carbon fiber box. Definitely breaths more air for sure. This box was good for 14hp dyno proven over at the MB forums. I bought it from Advans.