g-tech pro, do they work?
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Joined: May 2002
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From: oregon
g-tech pro, do they work?
i was looking at getting a g-tech pro before i start my build up. any of you have anything to say about them? I thought it would be good to test each part of my build up. i plan on starting with the basics and end up with a 331 stroker. I want to have a ongoing thread about my results, and i am not into taking my truck to the strip of trying to find a dyno until i am all the way done
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Joined: Mar 1998
Posts: 13,385
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From: Virginia
Hi MXHotShot,
A G-Tech Pro unit can be a very good tool, you just have to realize that it is a very inexpensive tool and thus uses very inexpensive accelerometers, so it's not a dead-nuts on accurate piece.
The newest units can also allow you to link to your PC to look at some data, too, and that's a great feature.
It's best to always try the G-Tech unit out at the drag strip, so you can compare your real ET's to what the G-Tech units says, as they *will* be different. The G-Tech will always give you significantly higher trap speeds as well, by about 5 mph or so, as it calculates 1/4 mile trap speed differently than a drag strip does.
Also, you must very carefully level the unit each time you install it, as that has a big affect on it's potential accuracy, and wheel hop is an absolute no-no, any wheel hop & you can forget getting any useful info from it. You will also need to know your actual correct vehicle weight for any of it's derived power numbers to be even roughly close, plugging in curb weight from your registration papers or Ford's published curb weights aren't accurate enough.
At the very *best*, we have seen some G-Tech's be within 2-3 tenths of a second of the real 1/4 mile times, and then we've also seen some that were *WAY* off, they do vary.
Overall, yes, we do recommend having a G-Tech Pro unit, especially now that you can link the new G-Tech models to your PC, and it's cheap enough that everyone can afford it. Just don't think of it as any kind of dead-nuts on accurate device, and you'll be OK, and if you get a chance to compare it to your actual times while running at the drag strip, then you can get an idea of it's accuracy during *that* installation. I say that because each time you install it, you have to level it, and it'll never be exactly the same 2 times in a row, we humans just aren't that perfect.
Have fun,
A G-Tech Pro unit can be a very good tool, you just have to realize that it is a very inexpensive tool and thus uses very inexpensive accelerometers, so it's not a dead-nuts on accurate piece.
The newest units can also allow you to link to your PC to look at some data, too, and that's a great feature.
It's best to always try the G-Tech unit out at the drag strip, so you can compare your real ET's to what the G-Tech units says, as they *will* be different. The G-Tech will always give you significantly higher trap speeds as well, by about 5 mph or so, as it calculates 1/4 mile trap speed differently than a drag strip does.
Also, you must very carefully level the unit each time you install it, as that has a big affect on it's potential accuracy, and wheel hop is an absolute no-no, any wheel hop & you can forget getting any useful info from it. You will also need to know your actual correct vehicle weight for any of it's derived power numbers to be even roughly close, plugging in curb weight from your registration papers or Ford's published curb weights aren't accurate enough.
At the very *best*, we have seen some G-Tech's be within 2-3 tenths of a second of the real 1/4 mile times, and then we've also seen some that were *WAY* off, they do vary.
Overall, yes, we do recommend having a G-Tech Pro unit, especially now that you can link the new G-Tech models to your PC, and it's cheap enough that everyone can afford it. Just don't think of it as any kind of dead-nuts on accurate device, and you'll be OK, and if you get a chance to compare it to your actual times while running at the drag strip, then you can get an idea of it's accuracy during *that* installation. I say that because each time you install it, you have to level it, and it'll never be exactly the same 2 times in a row, we humans just aren't that perfect.
Have fun,
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Joined: Nov 2002
Posts: 182
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From: Palm Beach, FL
I have one and love it. It works as advertised. Difference between track is minimal. If you need to be exact then go to the track. But for measuring performance of mods etc. is great. Main problem at least for me is finding empty copless street to do the runs 
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Joined: Mar 1998
Posts: 13,385
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From: Virginia
Sounds like you giuys have been getting some units that are very close, and have leveled them correctly, etc.
To see only 1 tenth difference between G-Tech & actual at the track is something I've never seen, but have heard a few people mention those kinds of results. It also seems to depend to a certain extent on just how quick the vehicle is too, we've found. In general, the quicker the vehicle, the more difference. Take a 16+ second vehicle, and you can usualy count on getting within 2-3 tenths no problem, and sometimes even closer. Take an 11-12 second vehicle, and it starts getting interesting sometimes. Every once in a while we'll see a unit that is off significantly, 5-8 tenths or so and more occasionally, but they're usually much closer than that, and certainly a worthwhile tool to have, absolutely!
Looks like you're getting lots of positive feedback on the G-Tech units mxholeshot!
To see only 1 tenth difference between G-Tech & actual at the track is something I've never seen, but have heard a few people mention those kinds of results. It also seems to depend to a certain extent on just how quick the vehicle is too, we've found. In general, the quicker the vehicle, the more difference. Take a 16+ second vehicle, and you can usualy count on getting within 2-3 tenths no problem, and sometimes even closer. Take an 11-12 second vehicle, and it starts getting interesting sometimes. Every once in a while we'll see a unit that is off significantly, 5-8 tenths or so and more occasionally, but they're usually much closer than that, and certainly a worthwhile tool to have, absolutely!
Looks like you're getting lots of positive feedback on the G-Tech units mxholeshot!
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From: CT.
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From: West Liberty ,Ohio
mxhotshot, please read
If you are interested I can get you a great deal on the G Tech Performance Pro Meter. I am ordering mine and if you want one you need to contact me in the next couple of days. E-mail me for all the details. I think you will be pleased with the price.. Thanks
detrick@bright.net
detrick@bright.net
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From: CT.
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Joined: Mar 1998
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From: Virginia
It's amazing what you can improve on when you double the price of something (well, the new GTech isn't exactly twice the price of the old one, but close enough).
The new unit having 3 accelerometers makes a lot of difference in it's operations, that's why it's now able to autolevel as well.
Some very nice upgrades in it's capability & especially installation, the "autolevel" alone is very significant; in terms of it's basic accuracy, it's everything.
Nice tool for anyone to have, & it will be interesting to see the data as time goes by and more people get a chance to use this new unit while at the drag strip to do the direct comparisons on this new unit's actual accuracy levels, as well as identifying how much variance in accuracy from one new unit to the next, etc.......................
The new unit having 3 accelerometers makes a lot of difference in it's operations, that's why it's now able to autolevel as well.
Some very nice upgrades in it's capability & especially installation, the "autolevel" alone is very significant; in terms of it's basic accuracy, it's everything.
Nice tool for anyone to have, & it will be interesting to see the data as time goes by and more people get a chance to use this new unit while at the drag strip to do the direct comparisons on this new unit's actual accuracy levels, as well as identifying how much variance in accuracy from one new unit to the next, etc.......................