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G-Tech Pro - Almost as good as the Turbonator!

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Old Oct 6, 2005 | 03:00 AM
  #1  
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Default Almost as good as the Turbonator!

http://gtechpro.com/

It'll tell you all this for $200!!!

Horsepower
Torque
60 Ft. Time
1/8th & 1/4 mile
0-60 & 0-100-0mph
RPM & Shiftlights
Handling Gs
Record up to 30 runs
3 precision sensors

I smell a fish?
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Old Oct 6, 2005 | 03:24 AM
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My buddie has that Gtech, and i ran a 13.41 at 108 at the track, and when he lended it to me i was running 13.3-13.4 at 106-108 mph, and my 0-60 was 5.00,4.95,5.10 sec, and i dynoed 311/323 and the gtech read 295hp and 323tq. i tought it was pretty damn acurrate. and a best G of .68 and the shift light and rpm read is great.
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Old Oct 6, 2005 | 07:49 AM
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I have used one before as well. If you input the right info they are pretty accurate.
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Old Oct 6, 2005 | 10:51 AM
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Damn so maybe I should skip the dyno and just get the $200 Gtech!?
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Old Oct 6, 2005 | 11:07 AM
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I was told that the mags like Motor Trend and Car and Driver use these for thier testing. Anyone no if this is true? If it is they can't be that bad.
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Old Oct 6, 2005 | 11:18 AM
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How exactly does it read horsepower without rollers? What kind of "info" do you have to enter.
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Old Oct 6, 2005 | 03:18 PM
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Originally Posted by Ell Ess Won
How exactly does it read horsepower without rollers? What kind of "info" do you have to enter.

Its pretty simple

Force = Mass x Acceleration

it has an "accelerometer" and im sure you have to enter the vehicle weight (mass)

Work = Force x Distance

Power = Work/Time
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Old Oct 6, 2005 | 03:22 PM
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Originally Posted by 01TA
I was told that the mags like Motor Trend and Car and Driver use these for thier testing. Anyone no if this is true? If it is they can't be that bad.
Magazine's aren't all that accurate for what it's worth I'm pretty sure they use the drag strip and road courses. They just use the factory rated horsepower though.
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Old Oct 6, 2005 | 04:37 PM
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You have to enter the vehicles weight, thats it. They work really well, Ive heard they are more accurate than the racetrack as the accellerometer starts when the car starts moving. The only thing I noticed was the horsepower numbers are a little off.
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Old Oct 6, 2005 | 04:47 PM
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Ive heard alot about this, if anyone has anymore info on this let us know.
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Old Oct 6, 2005 | 05:05 PM
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Originally Posted by LS1Zedder
You have to enter the vehicles weight, thats it. They work really well, Ive heard they are more accurate than the racetrack as the accellerometer starts when the car starts moving. The only thing I noticed was the horsepower numbers are a little off.
Well if you go to two different dynos, you aren't going to get the same RWHP on both. So, it depends on what you are comparing it to to say that the horsepower numbers are off. It might be dead accurate and the dynos are a little off....
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Old Oct 6, 2005 | 05:09 PM
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Interesting..

http://gtechpro.com/accuracy.html
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Old Oct 6, 2005 | 05:56 PM
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Originally Posted by 01TA
I was told that the mags like Motor Trend and Car and Driver use these for thier testing. Anyone no if this is true? If it is they can't be that bad.
You were told wrong. The ones the magazines use cost over $25,000 and are just about dead accurate. The ones they use dont measure horsepower either, they usually just put in the factory rating for that.
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Old Oct 6, 2005 | 06:25 PM
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Originally Posted by Keenov
Well if you go to two different dynos, you aren't going to get the same RWHP on both. So, it depends on what you are comparing it to to say that the horsepower numbers are off. It might be dead accurate and the dynos are a little off....
When Ive used it the HP numbers werent just a little of, they were like 100 HP off. At the time I bought it a couple years ago I did a lot of research on them and the general opinion was the HP numbers were inaccurate but the rest of the measurements were very accurate.
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Old Oct 6, 2005 | 07:49 PM
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yeah i bought one a couple years ago and it is right on except the hp is way off. The 1/4 mile time was right on with the mph off like 2 or 3 mph i dont remember now. Overall a pretty neat product.
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Old Oct 6, 2005 | 08:22 PM
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My buddies stock TA had 800hp according to one of these babies.
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Old Oct 6, 2005 | 10:00 PM
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If you calibrate it correctly, and keep it from moving during your run it can be very accurate. Within 1/10 on your quarter mile times, but it will read a little high on the MPH (it measures instantaneous MPH....your mph at the track is an average over your last 66 feet of your run).
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Old Oct 7, 2005 | 12:33 PM
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Originally Posted by vMaster0fPuppets
My buddies stock TA had 800hp according to one of these babies.
Shhhhhh! Don't say that out in public! The ricers will try to get a hold of the older models now.

But seriously, I have thought about getting one after I saw some recent T.V. commercials but I was skeptical about the accuracy of the readings.
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Old Oct 7, 2005 | 01:24 PM
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The MPH is not RWHP or FLywheel HP it is net hp. When I use mine it is 100-120 hp off, b/c of the drag of the car. It explains what net hp is in the manual. The 1/4 time are very accurate though if you set it up correctly.
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Old Oct 7, 2005 | 01:27 PM
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Car and Driver recently tested a bunch of these. They said the new G-tech is supposed to be pretty good. The magazines use some really expensive equipment that incorporate GPS in their tests. They need to be getting signal from numerous different sattelites for them to measure vehicle performance. The calibration of these less expensive meters usually involves adjusting the meter for how much your car squats during acceleration. Usually the more it squats the more off the meter is going to be unless you calibrate it for your specific vehicle.
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