thanks stu. perhaps in your evaluation of this unit you can see how the LSU4 fares and if it updates regularly enough for a high power engine going through the rev range quickly compared to your reference instrument.

i think an analogue gauge is good as a reference gauge for normal driving to see if something is wildly wrong. a digital is better for tuning, but a lot of the time you will be using the logged data to tune with if you are a diyer as you can't map and drive, and as this unit has either the built in logger or an external 0 -5v output, that is well covered.