Diagnostics - Plug in Devices

[waross]

Anyone ever use a device such as those produced by G Tech www.gtechpro.com?

If so what make and model and what are your thoughts on these devices?

If they are good as they are marketed to be then one woudl be nice in making continuing measurements as you make mods over time.

[twistedframe]

i never owned on but i've used one. when i was at school we tested it verses an actual dyno. suprisingly the numbers were relativly close. i believe on the dyno the car reached 527hp and on the g-tech thing it was rated at around 520. to me that pretty close. BTW i think you need to fix your link a little.