I bow to the master (well to someone who knows more than me anyway....)
My understanding was, for example, GTSIO - Geared, Turbosupercharged Injected Opposed? (like say a C421)
Not being smart@rse, genuinely interested. Are Lyco different to TCM?
(Maybe this should go to Tech.....)
Cheers. (& who is W.G.P?)