Hey Mate
They both use the same software thats included with each kit, but they all require another input for RPM to read rpm, it allows for datalogging etc straight onto your hard drive although a RPM or some other reading is needed to record afr's against something.
Many Thanks
~Nick @ Tuning Developments
Hi Nick. Yeah but the last kit, does that come with the needed wire so that you can hook up an RPM pick up to plot AFR vs RPM in the datalogging box? Me are mike are v interested in going halves on 1 but need to make sure its what we want!
Cheers;
Harvey