The X-Dash was a doddle to fit, very straight forward and we got all the inputs sorted very quickly...

I'd say overall they are better than the Gems at a third of the cost...

I find DTA very easy to use both install, mapping and running the cars (logging etc)..

You will need a Innovate or similar controller if you want to monitor Lambda but nowadays they come in about an extra £150, the innovate is pre-programmed as an option in the S40 so no need to plot a linearisation curve....

You get decent support off DTA and the last race car we fitted it to, (R1 engined single seater) required launch control, again all easy to configure...

HTH

Ian