Ok so I got a G tech pro. Decided to try my car out. I found what seemed a flat piece of land, kind of like a marsh. So the Gtech give me a 13.8 quarter at 108mph.

Here where it gets confusing for me, at the moment I only have a GM S2 for the winter. So thats a little low #'s for the modds. Would smaller tires, my winter 16's are about a inch smaller in height make the Gtech give our false #'s?

Or is it simply the cold weather + very light 16's make the difference?

Like I said, the land was deff flat. no hills there

 

i am not gonna waste ny time to answer this!

 

What? They are supose to be fairly accurate. Its fun to play around with anyways.

 

it is cause cold weather

 

g-techs are not always that accurate. That time is insane. You would not break 102mph traps and likely not 13's

 

I juist cheked, i was wrong,,,, 13.8 @ 102MPH

 

Which one do you have?
I have this one.



G-Tech can give false readings depending on a number of things.

E.G., I used mine in my '71 Camaro and got a 14.2 ET @ 102 mph. A few months later I actually took the car to the dragstrip and ran a 13.8 @ 99 mph. I did not run the G-Tech at the strip at the same time. It's a PITA to do that from what I understand.

Being an accelerometer, it can easily be skewed by shifts, tires spinning then suddenly grabbing traction, bumps in the road, etc. They're a good tuning tool to compare before and after results, but that's as far as I'd trust it. The only thing that will give you real world results is a real dragstrip.

 

Actually mine is a new Escort GT2. It is supose to be preatty accurate. I have smaller wheels on the car right now, would it make a difference since they are alot lighter and the cold weather?

 

i just bought one and according to it my tacoma ran a 14.8 1/4 at 93mph, and that is within .2 of my last actual time. (14.97) my best is a 14.73

 

yeah they are supose to be withing .1-.2 of the real #'s. Just find FLAT land and rock and roll

 

Actually that is probably about right for a GM Stage 2. One guy in AZ ran a 14.2 @ 103 at the track with GM Stage 2, Injen CAI, and GMPP Sport Exhaust in 100*+ weather.