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How does a g-tech work?

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Old May 12, 2003 | 09:18 PM
  #1  
89RsPower!'s Avatar
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Car: 86 Corvette, 89 IROC, 1999 TA
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How does a g-tech work?

topic says it all.. how does a g-tech work?
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Old May 12, 2003 | 09:25 PM
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From: Loveland, OH, US
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It's an accelerometer. It measures how fast it's being accelerated, and calculates everything else from that. Think of a glass of water sitting on your dash; you could measure how hard the car accelerates, by how far up the side of the glass the water sloshes. It works alot like that.

Since it knows how much it's being accelerated, all it has to know in order to figure out how fast it's going is how long it's been accelerated. Same for distance. The you tell it how much the car weighs and it makes a guess at how much power the engine makes, based on how much power it takes to accelerate that much weight at whatever rate it measures.

Quite simple, really.
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Old May 12, 2003 | 10:41 PM
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NTChrist's Avatar
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Measures time, too.

Time (s) X Accel (m/s2) = speed (m/s)

Speed (m/s) X Time (s) = distance (m)
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Old May 12, 2003 | 11:16 PM
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Is it accurate at doing this? I heared the new one also measures HP and torque, how does it do this? -89IRO
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Old May 12, 2003 | 11:18 PM
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89RsPower!'s Avatar
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From: New Jersey
Car: 86 Corvette, 89 IROC, 1999 TA
Engine: 350, 350, LS1
Transmission: 700r4, 700r4, T-56
Axle/Gears: 3.07, 373, 4.10
thanks!
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Old May 13, 2003 | 05:40 AM
  #6  
RB83L69's Avatar
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From: Loveland, OH, US
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Yup, measures time too.
all it has to know in order to figure out how fast it's going is how long it's been accelerated
This is how it "measures" HP and torque.
Then you tell it how much the car weighs and it makes a guess at how much power the engine makes
I might add to that, that it would need to know tire size and gearing to be able to estimate engine torque correctly; since all it can directly measure is the rate at which the car accelerates, and has no direct knowledge of engine RPM.

In principle, it has no choice but to be accurate. It relies on the simple, basic truths of physics, familiar to any reasonably well-educated high school student.
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Old May 29, 2003 | 09:51 PM
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The new G-Tech Pro Competition does have RPM guage you calibrate to your cars RPM. It senses the RPM thru the power plug and it is accurate after you calibrate it, so that is how the torque measurment comes in.
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Old May 30, 2003 | 03:52 PM
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See www.gtechpro.com
Or more specifically:- www.gtechpro.com/gtechprocomp_howitworks.html

The standard model and the new Pro-Comp are both very easy to set-up and use.

Do a search on this site and you'll find numerous reviews and opinions about them. For example:-
G-Tech you've got it or used it come in....
https://www.thirdgen.org/techbb2/sho...ighlight=gtech

Hope that helps!
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Old May 30, 2003 | 05:13 PM
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ronterry's Avatar
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From: Elizabeth, Colorado
Car: '94 Corvette
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Still waiting for the PC software... How about you 'Dr G' ?


Ron
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