my few first runs in my ek9 at crail last year I ran 15.3s all day but each time i went back I got better. best I have ran is 15.1 and that was just with a 4-2-1, tanabe system and j's intake, but I have some good mods and mines is stripped out now so should do better this year!!
I would of thought EK9's would set better times than 15's and mid 14's
My EG6 ran constant low 14's with best of 14.22 with only:
Supersprint 4-2-1, 2.25 manifold
2.5 full system (spoon N1 box)
Foam drop in pannel filter
15" Goodyear Eagle F1's
and the rear seats removed