Being a Ruf fan I was just reading through the bits on the CTR2 and laughed at the comments made by a few ignoramuses about the 8 mins 15 lap time. Well I have a copy of Autocar issue 17/24 Dec 97 which featured this very lap! The driver that day was one Stefan Roser, yes him who drifted the CTR1 around in Faszination. It took place on a cold November day and on the same day Caterham set the road car record for the original Superlight R at 8 mins 6.2 seconds. Stefan tried several times to match this time and managed 8 mins 15 eventually. I am not sure if it was a full lap or the bridge to gantry variety, but the track was closed, so I guess it could have been the former. Anyway you can hardly say it was a rubbish lap can you, when the greatest RUF driver of all time was at the helm!
Anyway that sets the record straight. The reason why CTR2 was 10 seconds slower than CTR1 is probably because a) the track was slower on the day of the CTR2 test and b) the CTR2 doesnt actually have a better power to weight ratio than old yellowbird. Plus the fact that track day times didnt really improve until 1999 with the arrival of the GT3 which kickstarted the whole Nurburgring craze.