I can understand why people dont always RR after every mod (price ,time....) Its worthwhile using a stopwatch in say 4the gear doing say 3000-5000rpm then 5000 to redline.runs (both ways average on a flatish road) .Costs nothing ,quite good fun and assuming air temp ,wind etc are similar on each day ,does give a reasonable indication of any improvement.
Ryphille... OK you meant the comp outlet tube points outboard not inboard
Best Regards Roland GTT