Thread: 14/19r Vs 15/20r
08-07-2009, 03:57 PM #1
- Join Date
- May 2007
14/19r Vs 15/20r
I need some guidedance i have an rxt with:
i did back to back testing with 14/19r and 15/20R and
and with the 14/19 Iím getting 8100 Rpms by the 15/20r Iím only turning 7700 and I definitely donít have a boost leak since Iím boosting 9-10 Psi
what should i try different !....any input will be greatly appreciated speedwise 70.4 mph fastest on gps
08-07-2009, 04:01 PM #2
The 15/20 with 2 mm taken out will put you close to 8100 and will be faster than the 14/19.
08-07-2009, 04:06 PM #3
BTW, what were your water/air temps and altitude? Annette's ski just moments ago turned 70.8 with same set up minus external IC and extra fuel.
Water 81, air 83, sea level. I'm de-pitching a 15/20 now.
EDIT: Never mind, I just saw you were in FL.
08-07-2009, 04:12 PM #4
what is the air temp/water temp/humidity? all could be a factor on why you aren't getting more rpms. i also think using the 15/20 would net more speed, if pitched accordingly
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