It seems like a lot of people on here are interested in this performance meter so I thought I would copy my post on another site for everyone here.

Performance meter comparison/review: http://www.caranddriver.com/features...s_work_feature



GTECH PRO RR


I ordered mine new for $250, according to owners and reviews it is VERY accurate. Mine will arrive tomorrow. I will revise this review with gtech dyno graphs and dynojet dyno graphs to compare the accuracy and with track time slips compared to gtech "time slips" taken on the same run.

The Gtech Pro RR has some AMAZING features! For now this will serve as a feature review of the unit.


First off, the software:

P.A.S.S.

This is the main page pertaining to PASS, the PC software for the Gtech Pro Competition.
PASS allows you to analyze your runs in even more depth than possible on the Gtech, due to the increased processing power and screen resolution of a PC. (PASS analyzes the data from the Gtech, i.e. it does not have access to any more information than the Gtech, just more processing resources.)
With PASS 2.0, you can analyze, compare and share dragstrip runs and track sessions from road racing and autocross sessions.








What is the latest version of PASS?

• The latest version of PASS is v2.0. This version works with all versions of the Competition and RR models.

Which version of PASS do I have?

• When you run PASS, there is a "Help" pulldown menu. If you select "About", a splash screen will appear and the PASS version is shown in the lower left corner.
• Gtech Pro Competition units shipped with PASS v1.1.1.
• Gtech Pro RR units shipped with PASS v2.0.
• Gtech Pro SS units cannot upload data and do not ship with any version of PASS.

Which version of PASS should I use?

• If you have a Gtech Pro Competition:
  • The newest version of PASS v2.0. PASS v2.0 will work with any version of firmware on the Gtech Pro Competition. We strongly recommend that all Gtech Pro Competition owners download, install and use PASS v2.0.
  • If you have upgraded your Gtech Pro Competition to the RR/4.0 firmware, you must use version 2.0 of PASS to analyze your runs.
  • If your Competition has firmware version 3.0 or earlier, you can use PASS v1.1.1, but you will be missing out on the latest features and enhancements in the latest Gtech firmware (version RR/4.0) and the latest version of PASS, v2.0.

• If you have a Gtech Pro RR:
  • Your product was shipped with PASS version 2.0, and that is the version you should use with the RR.

• If you have a Gtech Pro SS:
  • The Gtech Pro SS cannot upload runs to a PC, so you cannot use PASS with your product.

(Please note before installing or running PASS: your Windows screen resolution must be set to at least 1024x768 or greater, otherwise you will experience problems with the PASS window filling your entire display.)
I am a drag racer - what features of PASS would be interesting to me?
Some of the dragstrip features of PASS are:

• compare & overlay up to 4 runs at once
• display of the following stats (shown for U.S. mode - metric equivalents are also viewable):
  • reaction time (if applicable)
  • time to complete rollout distance
  • 1/8 & 1/4 mile trap speed and E.T.
  • 60 / 330 / 1000 ft times
  • 0-60 MPH time
• Acceleration stats:
  • 0-30 MPH, 0-40 MPH, .... 0-130 MPH
  • 30-50 MPH, 40-60 MPH, 50-70 MPH, 60-80 MPH
  • 0-60-0 and 0-100-0 timings
• graph of:
  • Horsepower & Torque vs RPM and Horsepower vs Time
  • RPMs vs Time
  • Gs (Acceleration), Speed and Distance vs Time
  • Braking distance
• zoom in/out on each graph
• switch between metric and U.S./Imperial views
• save run data in plain-text format for use in other applications
• print graphs and export graphs in JPEG format

I am a road racer / autocrosser - what features of PASS would be interesting to me?
Some of the track features of PASS are:

• carve up a track session into a set of laps for lap-by-lap comparison
• compare lap times and G-force/RPM measurements to find where you "pushed the envelope"
• real-time playback of race data, showing G force and RPM changes as they happened
• rewind, pause and fast forward with variable speed during session playback
• zoom in/out on each graph
• G-G circle plot helps you understand how consistently and aggressively you are driving
• save run data in plain-text format for use in other applications
• print graphs and export graphs in JPEG format
• on-screen "hints" indicate the function of buttons and windows within the application

 

The actual unit:

G-TECH PRO RR
http://www.gtechpro.com/test.html

Click to see the G-TECH in action!

Hi rez (5.8 mb)

Low rez ( 2.2 mb)


RR
All of the features of the SS model plus:

Road Racing/Autocross
PASS Software
Multiple Vehicle Support
2hr data-acquisition
PC Download Cable
AC Adapter
Permanent Mount
PASS - Performance Analysis System Software. It can be used for replaying and comparing 1/4 mile runs or for replaying Road Race/Autocross sessions. It even replays engine sound based on recorded RPMs.
$299.99

RR model comes with the Permanent Mount which allows you to permanently mount the G-TECH/Pro anywhere in your car. The unit itself can still be taken out of its cradle.
RR model comes with the AC Adapter so you can power the unit while you are downloading the runs/sessions to your PC.
RR model comes with the PC Download Cable that is used to quickly hook-up to your PC and download all your runs and sessions.
RR model comes with 2 Megs of FLASH. This is enough to store over two hours of Road Racing/Autocross sessions (10 Hz recording.) That's more than full-blown data-acquisition systems costing thousands!
With the RR model you can memorize settings for up to 4 cars and jump from one to another in a matter of seconds. Some guys get the extra brackets for each car so moving the G-TECH from one car to another is really a snap.

RR stands for Road Racer. It has all of the features of the SS model plus Road Racing/Autocross mode in which you can record and replay your Gs and RPMs for a given practice or race session.
PASS is included! Learn more...



REVIEWS/ADDITIONAL INFORMATION:

http://www.gtechpro.com/rr.html
http://www.gtechpro.com/pass.html
http://www.caranddriver.com/features...ters-work.html

 

Yes I have had it at the track several times and it is accurate. I have not had time to fool with the dyno features though, there are like 6 cops for every person where I live so they are up your @ss everywhere you go and I haven't found anywhere to test it without getting pulled over.

Here is a test run I made on my old car:

dynoc.jpg

and the fact on a "real dyno" I ran a 285.8whp/255wtq the gtech is right on. It is about 8% off and the weight is about 8% too heavy so if you subtract that it would have been amazingly close.

Typically the drag mode will show 5mph faster than your actual trap speed in a 1/4 mile so if you subtract that out you should be right on.

 

If anyone is interested I have the better one for sale, used it like twice. $250 OBO?