07-23-2018, 09:44 PM
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#165
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Enlisted Member
Drives: 2014 X5 xDrive50i M Sport
Join Date: Apr 2018
Location: Wisconsin
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Quote:
Originally Posted by DuSh
Going in 3-4 hours. It's too damn hot. And I can guarantee you I'm royally screwed. Just searched Density Altitude calculator and I got 87% relative density - meaning weather is robbing me 13% of air. Also, I've read somewhere that every 10F above 60 degree is robbing you 1% of power. So I'm robbed 4-5% - that's about 24whp!
Also, I have 91 octane for this run (no 93 in AZ) while my tune is made for 93. So coupled with temperature - it means ignition will be heavily retarded.
I'll post my 14.5 sec 1/4 run soon I guess - and even that is if I'm lucky.
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You got this! (in for results)
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