Has anyone used one of these? Are they worth the $$$? Do they work at all? I did a search and could not find any posts so I was hoping my faithful C5 nuts could help. :D

 

:lurk:

 

Jay,

I've had one of these about a month. It does everything but burp you & put you to bed at night. The built in display is large enough for all kinds of graphs. (to numerous to go into right now) In addition, every thing it displays can be downloaded to your computer w/supplied software & cable. Mucho memory for storing many run data streams on board. It also lets you practice your reaction times & dial them in for your timed runs. It measures horsepower, torque, acceleration "G"'s, cornering "G"'s & more. The owners' manual is almost a half inch thick. Of course it also has a tach which reads rpm signal from any accessory outlet you plug it into to power it from. (console glove box is perfect) I used a Radio Shack extension cord with a switch built into the cigarette lighter plug. No cutting or wiring necessary. The mounting bracket is ok but a little fragile for my tastes and is generally usable only on your windshield. The alt mounting, requires that you drill holes in the mounting surface. (Can't see doing that to my vette) Its appearance is simple and very deceiving. IMHO it's a real powerhouse piece of equipment.


Hope this is of some help

Barry

 

I posted the sam question a while back but have not received a comprehensive reply. My question is how accurate is the HP/TQ reading ? has any one compared it to a dyno ? I know the other functions work fine but this may be the only reason I buy the same.

 

I don't know about the G Tech but my Tazzo works well and is very accurate as tested in the 1/4 mile at the strip. :thumbs:

 

I've not heard about the same. Does it measure HP/TQ ? Tell us more about it pls. :seeya

 

I have as well, they cool to play with

 

Nabil,

The G-Tech calculates "Road" horsepower & torque. This is true "Delivered" horsepower & torque. "Delivered" horsepower is rear wheel horsepower & torque minus aerodynamic parasitic losses. Very few dyno's have the capability to calculate "Delivered" horsepower even if the true coefficient of drag #'s are known for a given vehicle.
In light of the above, "Delivered" horsepower/torque #'s (such as displayed by the G-Tech) will always be LOWER than rear wheel horsepower/torque #'s. The margin of difference will not vary by a constant (hp/tq/%) due to wide differences of aerodynamic coefficients of drag for different vehicles.

 

The Tazzo also can measure the HP/TQ as the G Tech Pro. I have never tried it on mine yet. :cheers:

 

You cant go wrong with the G- tech, For $60 they are a ton of fun, it will give you HP, 0-60, 1/4, lateral G, top speed, and a couple of other things. its really easy to work with just input the vehicle weight and go. :thumbs: there is better stuff out there, but this is fun for the $, its pretty consistant as well

 

:cheers: Old Timer!! Great write-up. I ordered mine throught LAPD (special $225.00 delivered) and hope to see it by week's end. CAN'T WAIT NOW.

I always liked the kind of info you could get out of these things, but I wasn't really sure it was true..... Good to hear from a happy customer.

I'll try to post my thoughts/opinions on this little tool in a week or so.

:party:

 

Hello...

Great product, although the mounting design could have been better, tons of good usable features that interacts with the software you download from the net, BUT (damn that "but") I have had mixed consistency results when I've backed to backed it against actual timeslips. It reports from a tenth optimistic to 6 tenths optimistic, with about the same "optimism" in MPH....the biggest problem is that it's never the same level of "optimism", because I could just do the math at that point. It does record consistant extremely close 60 ft times (usually within .01), and I think being my car is a six speed, the jerking nature of its travel down the 1320 causes more and more inaccuracy with the Gtech along the way....the 60 foot measurments is a fairly steady amount of forward "G's" and therefore records with a very good level of accuracy. My 330 time is closer than my eigth mile time which is usually alot closer than my actual qurter mile results...I think you get the picture.....the further down the track I compare results (and the more shifts I've completed) the G-Tech's accuracy seems to fall futher and further behind. I WISH it was more consistant so I could go to my favorite stretch of road and feel confident the pass I just made was better or worse than my last without second guessing the G-Tech. I will be taking it on my 3rd track outing shortly and will try one more time to guage its accuracy(or lack thereof). One more thing to add....its deadly consistant and repeatable if your doing brake testing (recording the number of feet it takes to stop from various speeds), and my guess is that it never experiences the unsettling of "G's" associated with a stick car in an acceleration run....a brake test is usually one long constant deceleration to a stop, hence its more consistant results....All of this is JMHO
Anyone else out there actually back to back it against the timeclocks at the track?? Would love to hear your results as well.

Tony M.

PS If my theory is close, an automatic car would have far more consistant results than a manual version, as it doesnt "jerk" and upset the G-tech during its upshifts (at least not nearly as violent as a stick car would)

 

I have one and an 03 Z06. It does a lot of interesting stuff but I agree with some of the comments that it seems a bit unpredictable on the quater times. These meters have always given away trap speed but 'm getting some 11.8 quaters with a 6" roll out and a 2.1 60. That seems more like a 12.4 or 5 to me. Also some cars, like mine, have a weak signal from the alt. this screws up the G tech. In my case all is good untill I load it hard in 4th then the signal goes crazy effectively destroying any meaningful data with a pc.
Just some thoughts

 

Thanks Old Timer for the great Info. I think that accuracy is what I'm looking for . The true HP that is delivered to the road. I going to order one soon. :seeya

 

Hey V-8

Dont count on repeatable dyno results either....if it varies on track times and MPH it will also incorrectly inform you of your "horsepower" etc. I did two power pulls in second gear as they recommend and saw a 75 HP difference in the "stated HP". I don't mean to be a "neg" and I gladly welcome some positive feedback from those who have direct comparisons, however I'm just being more of a realist based on my experiences. If you really want the true "skinny", the chassis dyno and the track are still the only places I know for accurate info (unfortunately), and both of them are usually a "humbling" experience....LOL

Good luck if you do decide to purchase it and back it up with some track slips and a pull on the chassis dyno....would be curious to hear your results.

Tony M.

 

Thanks Tony. It is good to have different opinions. I guess you are right . The dyno will ultimately be the test + the track ( like you asid they are usually humbling ) . Will keep you posted.