Originally Posted by bruce.augenstein@comcast.
Gearing can have a major effect on ET, but tends to not be too important a factor in terms of trap speed.
The fact is that the GT-R performs better than its specs in terms of the quarter mile trap speed. With a given that the observed dyno numbers referred to earlier may be accurate, that makes me believe that the Nissan is handicapped when strapped to a stationary dyno, and makes more power out on the road or track.
Could it be a cooling issue when it is on the dyno?