View Full Version : G-Tech Pro purchase
04-06-2001, 12:13 PM
Does anybody know where to pick up a G-Tech for less than the $139.95 that everyone seems to charge for them? Even on eBay they close for pretty darn close to that price.
I've got a bunch of mods sitting in my garage and others on the way, and I'd like to be a bit more scientific than the butt dyno!
04-10-2001, 06:55 AM
Well instead of the G-Tech, I found a better product, and I was able to get the distributor to set us up with a group purchase.
Okay here is the product: http://www.cb-racing.com/rt-index.htm
Here is the pricing:
AC-22 $195 retail $175.50
AP-22 $255 retail $229.50
shipping $6 per location
He said that they would all need to be paid at once, so I'm not sure if that means we would have to make one payment (like through me) and send it in, or if we can all pay him on the same day.
It will take one week from the day that he receives payment for him to get them from England, at which point they will ship to you.
I'll post more information as it becomes available. We'll need at least 10 people to get the above pricing, there are already two interested, not including myself. So please reply to the thread if you are interested.
<EDIT> Just found their actual company page: It has even more information about the unit: http://www.race-technology.com/WebPage/Products/Accelerometer/PerformanceMeterIntro.html
[Edited by shaggymatt on 04-10-2001 at 09:48 AM]
04-12-2001, 06:48 AM
Well in case anyone wanted to order, doesn't look like this is getting too much action...
Okay, everything is ready to roll now on the group purchase. We have opted for the 5% discount program. With the 10% program, they wanted to ship all the units to me for repackaging and shipment from me. Everyone would have been in essence paying shipping twice this way, once from him to me, then me to you. Then there would have been the PayPal surcharge for those of you that wanted to make the payment to me by credit card.
Ultimately, the 5% discount program works out to just a few dollars more than what the 10% discount would have been after all the charges got added in. This way there are no upcharges for CC usage, etc. and orders (for the AC-22) can be fulfilled quicker.
So here is the ordering page, this is only active till 4/20/01: http://www.cb-racing.com/ordering_page-group.html
Just as a quick run down:
Time the acceleration between any two speeds
(e.g. 0-60mph, 0-100mph)
Measure the time to do a quarter mile run
Measure braking time and distance
Measure the car's power at the wheels
Display the cornering or accelerating g-force
Indicate how near you are to losing grip
The performance meter can be set-up to use either metric or imperial units, whichever you prefer.
The basic difference between the AC-22 and the AP-22 is that the AP-22 has far more memory (256kbit) and a RS232 port to allow runs to be recorded and then downloaded on the PC to enable further analysis. To give you some idea of the data that can be recorded have a look here. As well as the data logging abilities the AP-22 has a few other extras including compensation for body roll.
The AP-22 unit can do graphs of g-forces, power, speed, and distance!
For complete information see: http://www.race-technology.com/WebPage/Products/Accelerometer/PerformanceMeterIntro.html
04-12-2001, 10:30 AM
its not worth it to get the gtech pro. you would have to set it exactly. it also wouldnt work accurately unless you are at an open FLAT surface. it needs to be exactly parallel to the ground and if you hit bumps, or have it slamted etc, forget it. i would suggest you get the APEXi rev/speed meter to test 0-60 times, 1/4 times etc.
04-12-2001, 10:34 AM
this works the same way as the gtech meter. it is not worth trying to set this thing up. i sold the one i bought instantly when i found out how i was supposed to meter my car. its too much of a hastle. the get the r/s meter by apexi. that measures when your car actually starts to move.
04-12-2001, 05:23 PM
Or one can spend the money (usually as part of a group) and just go use a real dyno. Sure, you can't do it whenever you want, but it's much more accurate and reliable than the GTech and probably the APEXi (never seen one of those). When I was helping my friend with his '71 Cuda, he spent $40 as part of a group of 20 or so people, and went and did 3 dyno pulls over a couple hours. Personally, if you want real numbers that people who are serious about cars will respect, I'd go the professional route.
04-12-2001, 06:50 PM
true. nothing beats going to the good ole track and dyno, but i jsut didnt expect it to be such a hastle to work. not alot of people have wide open roads where you can do test runs and not have to worry about hitting some kind of bump, change in elevation etc. $40 is a good investent, and there isnt much to lose. i ran a 12.5 with the apexi r/s meter and at the track i ran 12.6 so its not dead accurate but it gives a good estimate.
04-12-2001, 07:42 PM
True you could dyno, but with the amount and frequency I do mods, I'd be shelling out way too much to dyno all the time, not to mention traveling to the closest load bearing dyno (2 hours one way). I can see if what I did gained or lost me any power with the above meter. When my car is done, yes I'll go for an official load dyno. Download them to the pc for comparison and filing.
04-12-2001, 10:15 PM
again, the im not against the product. i just thought it was a hastle to use. you have to know the weight of your car. how do you know the exact weight of your car? you dont unless you go to a weigh station. and how oftern do we do that? you could estimate the weight of your car, but then you lost accuracy. what if you have extra change, wallet, stereo, heavier set of springs, rotors, etc. that all makes a difference. mod out your car and hit the track. who cares how much hp your car is putting down as long as your fast. i havent gotten my car dynoed cut there is no 4 wheel dyno faciity around here. i just mod my car adn hit the track. hey $10 for 15+ runs? you cant beat that.
04-13-2001, 05:48 AM
Once again, the closest 1/4 mile to me is about an hour, yet there are three dirt track ovals within 30 minutes?!
But there is a metal salvage yard 3 miles away and they obviously have large scales there to weigh you car before & after you drop stuff off. I'll be weighing like almost empty, half tank and full tank. This should be sufficient for an accurate reading.
The butt dyno isn't very accurate! The psychological factor when you do something to your car is in effect!
shaggymatt, you just need to get your ButtDyno(tm) calibrated.
04-13-2001, 08:40 AM
if you try to meter your times and power with any device even simular to the gtechpro on an oval track, forget it. the device works like this: there is a mechanism that is extreemly sensitive in the unit. it has to be exactly parallel to the ground, the meter will read 0000. when your car moves or is slanted it will read -0012 or so depending on which direction you are going. thats how it reads horspower, lateral g's, times, etc. the little crystal in the unit is so sensitive that it give you a calculated number by force of accelleration, lateral force, etc in g form. if you want to do it on an oval track, your numbers will be off.
04-13-2001, 09:11 AM
Yeah I think that my 17" Z rated performance tires will do real well on a dirt oval track! I just mentioned that because those are the only tracks that are local to me, they are intended for those Sprint cars.
Apex -- Yeah the buttdyno does need some work. Trouble is that if I sweat off a few pounds while working on the car, my readings are even further skewed.
Of course after all this I forgot that I can actually measure 0-60 times and such through the OBD2 port on my car and the diagnostic software via data logging. But these units do have a few more capabilities, not to mention, I don't need to mount my laptop in the car!
04-13-2001, 09:45 AM
what do you drive anyway?
04-13-2001, 12:22 PM
Here's my "family bruiser" http://www.vidavision.com/hobbies/shaggymatt/
Currently somewhere around 245hp and about 270 lb-ft of torque. Debating if I should go for the next step in turbo upgrades and get into the 300+hp realm.
04-13-2001, 12:26 PM
not mayn vws in the 200+ hp range. thats pretty inpressive.
you have alot of misc stuff though right like stereo, etc.
let me know when you get the meter to see how much power you are putting to the ground. 245hp from the mods you listed on your site is VERY impressive even if its a round about number. we have done extensive work on some vws and even with higher hp output then didnt do too well at the track. post as soon as you get the numbers. curious to know
04-13-2001, 12:56 PM
Well there is one other guy with similar mods running 13.8 in the 1/4, but he is a track god. The "normal" crowd typically sees 14.1-14.2 with the setup that I have, which they have dynoed out to just over 200 wheel hp. Not bad for your daily driver that I use to haul around the baby in also!
While my car is balanced nicely for dragging (65% front) its a turbo so its got a bit of lag, not to mention the larger turbo, so I have a bit more lag than stock. I need a nice little shot down low, been considering that Venom system although not many people have put NOS onto this engine, and I don't want to be the first!
04-13-2001, 04:34 PM
I see your point, rollhard. I tend to do my mods all at once (collect parts for a few weeks or months and then spend a whole weekend on the car), so it wouldn't be as big a deal for me. I still have yet to dyno my car, though, so I don't really have room to talk. :) Maybe when I get a real job and stop buying so many records.
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