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When I ran 10.5 @ 135 on dragy that was with E50. The timing difference is about .5 degree but I have ran the same timing(20) @ E80 vs E50 and there wasn't any KR.
No I haven't dragy tested with the 3.25, I just put it on yesterday and I will wait until the conditions are similar.
Comparing log data from the 3.375 to the 3.25 in the same temps(80-85) from a couple hits I made the 3.375 would hit about 1.39-1.40 g/cyl and 80-81lb/min on the MAF. With the 3.25 it's hitting 1.43-1.44 g/cyl and 83-84lb/min on the maf. That is with both pullies on E50 and 18.5-19 degrees of timing.
It feels like it hits harder and the bottom of 5th pulls better.
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2016 NFG 1SS A8
Options-2SS Leather/NPP
Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP
Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA
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