I really don't have a track close to my house and I am usually pretty busy on the wk-ends so I don't have a chance to go. However, I really want to know what times I run so I bought a G-Tech Pro. I am consistantly running 4.5 - 4.7 0-60 times & 13.0-13.2 quarter times, with a best of 4.4 0-60 and 12.89 quarter mile time. I was hoping to run consistant 12's but it just has not happened, I have done approximatly 10 runs. How do you think these times stack up with my mods. Thanks for your help and advise.

 

depending on your tune, i say its lying, you should least be in the 12's.

This is gonna sound dum, ive heard of g-tech but never knew what it was, what is it?

 

It's a GPS unit designed for testing vehicles.
If you do mods and a track is far away, it will give you a ballpark.
I heard the satelite signals where only specific to within 20-30 feet except for the military. They were scrambled just enough so 'you' couldn't drop a smart bomb down a chimney and they could.

 

Sorry guys, but the G-Tech units do not use GPS technology. They are fairly accurate, especially the newer ones. The professional model is pretty trick.

http://www.gtechpro.com/

With your mods, you should be pretty close to what your G-Tech is telling you. Some trucks with your mods produce better times, some worse. Good luck with the unit.

 

Thanks for that info.
How come the 1/4 mile tracks ain't out of business yet?

 

how did you determine your weight? I think this is ok for a good general idea esp for a couple things but for quartermiles it seems a lil tough. Cmon, just take it to the track and see. I think you will see 12's.

 

I went to a dump site and had my truck weighed their. They said it weighed 4800lbs. That the weight I used. I have only ran in the 12's once according to the G-Tech. I was just wondering how accurate it was. Its ususally always around 13.1x. I also thought I would be consistantly in the 12's.

 

That sounds about right. Here's a link to my G-Tech Pro Competition results. I think if I had done a second calibration like it says is necessary, the times would've been closer to the track times.

I've got a 4# lower, chip, air kit, FT valve body, lakewoods and E/T streets ... close to your mods.

 

lol Good question. For the money they are a great tool for figuring out your "street potential" at the very least.

 

I posted my results awhile ago.....at the track i ran with my G-tech hooked up. I ran a 13.11 track time and the G-tech said 13.10. My mph at the track was like 107 and the G-tech said 112mph.

 

Wow, that's pretty close. I would rather the et be more accurate than the speed.

 

svtdave - yours was real close man! I heard that the mph will always be a bit higher on the g-tech because it actually measures your speed at the 1/4-mile mark, as opposed to the track, which catches you at traps just ahead of the end of the 1/4.

btw, that charger is the ****.

 

Weight is only used by the GTech to determine HP.

Remember to add YOUR weight to the truck's weight when imputting into the GTech.

In my experience -- and I have both the GTech Pro and the GTech Comp--the GTech is very accurate on the ET's, a little high (but still very consistent) on the trap speed.

 

Apples and oranges.

But (1) ET does not win a race, and (2) for some of us, drag racing is not interesting, but we still want a tool whereby we can measure performance without having to go to a track.

GPS technology--which the GTech does not use--can give absolute accuracy. The GTech can consistently give you very close results (within .1 sec).

 

It uses an accelerometer. Is within .1 seconds in a quarter. Is very consistent. Uses Weight for HP and Torque. And if you put a radar trap on at the end of the traps, it's MPH would be dead on. It's not real fun setting up, but is cool to watch as your hammering it.

HP and torque figures will always be lower than actual due to tire slipage.

You need flat wide open space to run on. Like a drag strip.