are G-tech performance meters accurate?

[1994Vib.RedGT]

Does anyone have the G-tech performance pro? My friend had a 98 GT that he totaled, he has one, so we decided to try it out in my car. the first 3 runs I had like a mid-15. The next run I got a 13.9, next a 14.449, then lastly a 15.2. This seems like an awfully broad range of times. how accurate are these things?

 

[1994Vib.RedGT]

bump

 

[AznStanger3v]

not very accurate, although they are fun to play with

 

[Black70Fastback]

they have to be perfectly level and reading zero g's when you are sitting still.

did you have it pointing down when you ran a 13.9 or were you going down hill and actually did go that much faster?

 

[Black70Fastback]

what the crap, tmoss posted before me. why did it go out of order again?

 

[tmoss]

They can be accurate, but you have to set them up and use them correctly.

 

[1994Vib.RedGT]

no, i was on a level road when i hit the 13.9, i think it must have just made a mistake

 

[gcomfx.com]

Mine works great in MOST cars (I have the old style).... we've noticed that if you have a lot of suspension mods you'll confuse them. In other words if you car sits at a different angle say low in the front then when you are at the 1/4 mile with the nose in the air pulling like a mofo... it'll throw off the reading cause you aren't level anymore.

Also you do have to make sure you are on a fairly level road and you have the thing square with the car.

Mine is within a tenth on the time, but you should note a higher mph on the G-Tech then what you get on a timeslip.... reason for this is the G-Tech estimates your MPH AT the 1/4 line. The track is a TRAP speed that is an estimate between two sensors near the finishline.

I think I said that right.

 

[tmoss]

Yes you did, the G-Tech will probably show ~ 2mph faster than the track.

 

[cobra dave]

through a bullet level on it and then see what happens.

 

[tmoss]

I mounted a level to the top of my VC-200 just for that purpose.

 

[Rootus]

I took mine to the track, it was more than 1/2 second off on the ET, and several mph off in the trap. I expect the trap to be off because of the different method of calculation. It also told me that I had 235 rwhp, when the dyno said I had quite a lot more...

So basically, it's a moderately fun toy, nothing more. The theory is sound, but the execution is only so-so with the cheap electronics.

Dave

 

[tmoss]

Depends on which unit you buy and how well the individual meter is calibrated. My VC-200 was way more than the G-Tech. I've seen others report good consistancy with G-Techs.