Originally Posted by
farmtruc
Depends on what you're wanting to monitor.
I'd get the DM200 with the a/f module, this allows you to add to the gauge later, egt, boost, etc, and still only have one gauge, you add modules to the gauge each time you want to monitor something else.
Get the dm a/f r combo if you just want the a/f ratio monitored, it's not exapandalbe, it's just on function like the others.
or, i just install the obdII gauge, it's cool, and i can add modules to it.
any of the gauges are good, just depends on how far you want to expand them.