I have both units for about another week, so if there is a specific question, let me know. Some of these get pretty nit picky as the units are both good pieces. I don't think you can go wrong with either one.
G2X
+ display that functions as a lap timer without a beacon (via GPS), and does speed, RPM, shift lights, and gear indicator
+ CF memory
+ robust software, shared with Racepak's more expensive products (very prevalent in NASCAR and drag racing)
+ lots of pro type features in the software like: storing track setups for easy recall at next visit, car setup information, weather station input, stored configuration settings, structure for storing run files
- 50% larger than DL1
- more initial software setup
- each input is a seperate cable
- not many built in inputs
- display cannot not do segment times
= display not required to log data
= structured window setup in software
= add on inputs via Racepak VNet ($$)
= slight hum from some displays (internal power supply)
= top side CF card removal
= $900
DL1
+ smaller than G2X
+ extra inputs (6 + individual wheel speeds)
+ CF memory
+ more intuitive software (v5) with better autoscaling
+ inputs are on 2 screw terminal connector blocks (easy car swapping)
+ video sync capability (additional cost)
- no standard display
- track set up each time you load raw data in v5 (~10 seconds)
- not as polished in the software look & feel
- you make your own data storage folders
= more freeform window set up in software
= add on display: can display any input; in addition to the G2X display features it can also do segment times & splits ($$)
= front side CF card removal
= comes with carry case
= $950 - exchange rate dependant (UK)
= software update (v6) in BETA now
I got a DL1 this time around, but part of that was based on the need to be able to easily swap between cars and that we already had lap timers installed. I also got comfortable with the DL1 software quicker. I can see buying either one and recommend them both.
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Jeremy Lucas
Team Honda Research
Kumho - Koni - Cobalt - Comptech