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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Track Has Higher Octane Gas Can I Switch JB3 Maps Then?



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      08-04-2009, 10:58 PM   #23
ianthegreat
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Quote:
Originally Posted by hotrod182 View Post
Map #7 should be fine. I'm just running map#7 on 91 octane, and right now with my car not running up to par, it is still turning 12.8 @ 111.8 with 19" Generals. Hopefully that will go well above 113mph once I put my new plugs in. But 100 octane should be fine. I still think it is best to drive it and make a few WOT runs on the higher octane before you 1/4 mile runs, unless you have unlimited and frequent runs where you can let it break in more in each successive run.
I just can't trap that high for some reason and I don't feel the tires skidding/spinning either. I'm also not doing the runs with DTC all the way off, it's in halfway mode. Maybe this is contributing and I'm not feeling it. Still stock tires though and launching around 2.2k
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      08-04-2009, 11:01 PM   #24
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Originally Posted by ianthegreat View Post
I just can't trap that high for some reason and I don't feel the tires skidding/spinning either. I'm also not doing the runs with DTC all the way off, it's in halfway mode. Maybe this is contributing and I'm not feeling it. Still stock tires though and launching around 2.2k

try doin it with DCT completely off. and launching at about 2500rpm but sorta feathering it through first
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      08-05-2009, 01:23 AM   #25
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I run with traction control fully disabled. I usually start in M1, and just feather the throttle enough to prevent full wheel spin, and ease into the throttle until I hit full throttle somewhere in 2nd gear. (on street tires). DS auto turns just as good times, if not better...if you can keep it from short shifting too soon, or down shifting accidentally when you full throttle it.

You won't get the highest traps without cooler temps 60F or so, and near sea level. (Or Meth)
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