How accurate is Colour Tune ? How Blue should the Blue be ? ( Weak ) Blue with yellow traces ( Richer ) in mid range ? All from final setting on twin SUs, a '50s 140 Jag. Had white plugs , now light brown and clean through the rev range.
I've always set my 107 280 SL K - Jetronic by ear , not hard to do. How accurate ?
What should I expect from Colour Tune on my Jetronic Merc. ?
Like the Pilot said, instruments don't lie. Do they ?