Ive had my G-tech for quite awhile, and I love it! Does anyone else use one of these? It seems to be pretty accurate too. Anyways, just wanted to show you guys some pictures, for the results. Not too bad for a completely stock 91 S5 Vert.









RoninRX7

 

i dont know if a fully stock vert can get 151hp to the ground. maybe it calculates flywheel hp? still looks pretty fun to play with

 

Where'd you get 151?

 

Probably out of the same *** that .97G came from.

 

i meant 156hp. i have this... thing... it messes with my head and seeing numbers that dont exist but are close to the numbers i really see

 

Hahah! Not quite what I meant.. I mean.. there's no 151 on any of those pictures... maybe he misread 131.

Also. I don't think thats RWHP... I think its flywheel.. Not that it matters.. That thing just guesses anyways.

Its just a gadget.

 

Soooo...

If i get one, how many horsepower will it add?

 

42...

 

yeah I wouldn't use it as a baseline thing, good for comparison though if you get mods or in case your car starts to run like ****. or comparison to other cars

 

The G-tech and S-tech gadgets aren't accurate at all. The only thing that the gadget judges all that crap is through a ball of murcury. Suspension plays a huge role on that thing. I guarantee you that you will get different readings if you got a different suspension. You can't really count on those things. I mean that its only plugged into a ciggerette lighter. How can it tell you your horsepower, whether at the flywheel or at the wheels, just through the lighter?????!!!!!!!!!

 

dude.. you have no idea how advanced the g-tech is. its seceret alien(taiwanese) technology and it turns any everyday car lighter into a 90thousad dollar dynomometer.

 

Wow. All of you are coming off like real *********. Guy posts a picture or his G-Tech and you people turn into a bunch of ******** over nothing. A G-Tech is a perfectly fine way to get ballaprk estimations and to see modification changes.

 

what are they worth? i have woundered about them for a while. just another thing to add to the gadget collection.

 

lighten up. we are just playing. i love messing with the g techs

 

A lot of ignorance in that post...

While I wouldn't go around quoting the 1/4-mile and power numbers, they are an excellent way of evaluating the effects of performance mods. The acceleration times and g readings have been proven more than accurate enough. If you don't think these things can be accurately calculated from the readings of a g-sensor (the little ball of mercury) then you need to do some learning. And I don't see how it's power soucre is even vaguely relevant.

 

Damn seriously. I cant believe you guys are talkin so much ****. My guess is that its flywheel HP too. My car only has 49K OG miles on a perfectly upkept S5 motor on excellent compression. I dont see how these numbers could be that far off of the actual at sea level under perfect conditions. As for the G's, once you calibrate it correctly, its actually quite accurate. I lost grip on the tires when it was reading that number. The highest i could get with traction is a .92. So, i think thats pretty damn close, my tires are really sticky and almost brand new. It calculates horsepower and torque surprisingly accurate too. You enter the exact weight, which in my case was like 3300lbs, set all the rpms(I did it with a diagnostic reader), calculate and input the pitch correction, and it uses a combination of accelerating G's, rpm's rise rate, time, and weight to figure it out. The timing is accurate too because it shut off at the same time my GPS said i was going 60. I know it wont replace a dyno or anything like that, because if it was just as good, they wouldnt sell anymore $90K dynos and $5K GPS G meters. I just thought you might find it interesting how surprisingly close it was.

 

I bought one of the original units. It is an excellent tuning tool. The accuracy is OK, but the precision is the real advantage. FYI the uber engineer of all things turbocharged, Hugh MacInnes, highly supports the accelerometer tuning method in his "Turbochargers" book.

A lot of the responses to this thread really crack me up. I see so many people on this forum supporting absurd items like air pump superchargers, and yet this decent product gets bashed. Too funny.

Actually, it uses an advanced silicon capacitive accelerometer, which happens to be very inexpensive to produce. You can read about the general technology here:
http://www.wtec.org/loyola/mems/c3_s2.htm

The user must input the mass (weight) of the car, then:

Force=Mass*Acceleration

HP=(Force*Velocity)/550

The lighter is used to calculate torque, not hp.

Please send $100 for basic physics lessons to:

Evil Aviator
101 Physics Lane
Larrycurly, MO 80081

 

I have one of the original ones, and I really quite like it.

Though recently, I've just been too lazy to use it.

It is fantastic for telling differences in mods and the effects.

I just wish it showed a curve. (do the new ones?)

You have to read the instructions and use them properly, you can't just plug it in, smack it on the windsheild and then trust whatever number it spouts out. Read the manual!

 

i have on sat in a box somewhere - bought it as it was cheap

in theory its a great idea - if it always shows you 156 BHP and you add a filter and it goes up to 159 BHP then i shows an increase

makes sense to me

even it if showed you had 500 BHP and went up to 505 BHP - its still an increase ( albeit wrong ) - but it can show you the results of mods

must get mine fitted to the car one day

Stu

 

Thats why you have to input the stiffness of your suspention in order for it to be accurate.

I have one, and you would be surprised how accurate it is (IF you use it correctly). I went to the local landfill, asked them to tell me the weight of my car so i knew it EXACTLY, and I got some pretty accurate numbers.
Also, how would it possibly measure hp at the flywheel? It measures the actual acceleration of your vehicle, so this is hp at the wheels, after the drag of the wind, etc.

And finally, electrical power is the only thing the gtech receives from your cigarette lighter. Well that and engine rpms, but you have to calibrate that, and if you do it properly, sure enough it shows the same as your tach. I guess some of you think that it tells you your HP and torque through the lighter, but it does not.

 

More likely, rather than calculating FWHP the weight was inaccurately set.