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      08-16-2012, 03:11 PM   #9
radiantm3
Apex Everything!
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Drives: >1000 HP in my garage
Join Date: Sep 2008
Location: Danville, CA

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Garage List
2013 BMW X5M  [4.33]
2011 E92 M3  [4.80]
2014 BMW i3  [0.00]
Quote:
Originally Posted by LM3 View Post
Looks to me that much of the difference can be attributed to the higher corner exit speeds with the cups. For example, you're 7 mph up with the cups coming onto the front straight (@ 1:39). At peak speed on the straight, you reach 115 with the cups, and 113 with the ss. So that gap was closed to 2 mph with the ESS kit.

All of that said, I think the best look at your straight line acceleration is on the front straight as you shift into fourth. I honestly was expecting more between 103-113 mph in fourth. Could very well be the hot weather.

Top speed for me on my home track is in the 120-130 range down the back straight. On a 50-60 degree day I can nearly clip 130 mph whereas on a 90 degree day I'm just over 120 mph. Same tires, identical final corner exit speed, same brake point.
Yea the front straight is what really got me wondering. I was expecting it to accelerate a bit faster than it did when compared side by side.
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OEM M3 GTS Splitter/Wing/Harness Bar/Rear Seat Delete, Ohlin R&T, Brembo BBK, Akrapovic GT4, Alekshop Oil Cooler, ESS Tune/Pulley, Recaro SPG, 18" BBS FI, CAE Shifter, Vorschlag Camber Plates, Bimmerworld Toe-Links/End-Links/Motor Mounts, RD Sport Front Sway, Turner Solid Subframe/Diff Bushings, Awron Gauge.