That's what happened to me. Had a P38 beautiful car . Just thought I'd have a look at an L322 out of curiosity. Bugger was hooked. After driving both V8 & TD6 ended up with a TD6 very soon after. V8 magnificent to driver but as we intended to to do a bit of towing went for the TD6. No regrets.
Also if you get on buy an IIDTool
Home - GAP Diagnostic
I think your scan gauge will only have limited use with the RR its a generic tool and not vehicle specific.
Gary

