I can't recall the stock size pump jet, I want to say .40? and I went to .35? More importantly though is running the F36 tubes with either a 140 or 135 main and 190-200 a/c.
Colortunes are the best!! A Shell tour pointed out (and our engines are a low compression, by comparison), that the V power does have additional additives that benefit the engine, detergents and such. I agree we do not see any benefit from the premium octane, per se....I run regular all the time. leslie_choo in US a California company Pierce Manifolds is the Weber gurus to know, they can get the sets, I would think!
