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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20 and N26 Turbo Engine / Drivetrain / Exhaust Modifications > F30 N20 1/4 Mile Thread
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      07-25-2014, 05:37 PM   #67
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JB4 map2, ER Downpipe, 100Oct:
13.495 at 101mph
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      08-14-2014, 07:46 PM   #68
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2014 335 MSport xdrive 6MT Stock:

Made 5 runs. 13.5x at 103.xx was my best. Had 2 of those, 2 at 13.6x at 103.xx, and 1 13.9 at 103.xx (launched at too low an rpm). 60' times were 1.8x/1.9x. Worst was the 13.9 when my 60' was 2.0x seconds. Overall happy with those results for stock and 6mt. Trap speed never changed which seems reasonable. My last E90 335 6mt (rwd rather than xdrive) had a best of 13.6 but I wasn't consistent so a bunch of 13.9s-14.1s. I'm sure the 8AT would be better with the short gearing.
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      08-15-2014, 04:02 PM   #69
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I just use launch mode. Easy-P-Z
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      08-15-2014, 09:43 PM   #70
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I use sport+ in s mode.
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      11-12-2014, 01:12 AM   #71
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Quote:
Originally Posted by Kendroz View Post
I use sport+ in s mode.
Doesn't S mode shift at the redline? Isn't shifting around 5~5k better, if we look at dyno sheets and data logs?
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      11-15-2014, 11:48 AM   #72
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Quote:
Originally Posted by MyFragileHalogen View Post
Doesn't S mode shift at the redline? Isn't shifting around 5~5k better, if we look at dyno sheets and data logs?
I believe it is at redline.
In a few days i goona be back at the track so i can check.
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      11-16-2014, 12:29 AM   #73
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Quote:
Originally Posted by MyFragileHalogen
Quote:
Originally Posted by Kendroz View Post
I use sport+ in s mode.
Doesn't S mode shift at the redline? Isn't shifting around 5~5k better, if we look at dyno sheets and data logs?
Considering gear ratios it's still faster to shift at lower horsepower in a lower gear
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      11-16-2014, 02:29 AM   #74
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Oops, typo. I meant 5000~ 5500 rpm. It seems that both torque in dyno curve and boost psi in JB4 logs die after 5000-5500 rpm.
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      11-16-2014, 03:23 AM   #75
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Quote:
Originally Posted by MyFragileHalogen
Oops, typo. I meant 5000~ 5500 rpm. It seems that both torque in dyno curve and boost psi in JB4 logs die after 5000-5500 rpm.
You're right, but the engine will rev faster in a lower gear, so the slight drop in power is not worth shifting early for
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      11-16-2014, 09:02 PM   #76
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My 328 8spd has BMS stage 1 and Injen cai, what should I expect in the 1/4 when I run?
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      11-16-2014, 11:54 PM   #77
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My 328 8spd has BMS stage 1 and Injen cai, what should I expect in the 1/4 when I run?
If temp is around 80 maybe 13.7 o 13.8.
Colder temp 13.6
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      11-17-2014, 06:56 PM   #78
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Quote:
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If temp is around 80 maybe 13.7 o 13.8.
Colder temp 13.6
I was thinking 13.5 with a good 60ft, so that seems about right. I use to own a Cayman S PDK, and ran a 13.0@108, so was thinking this car wouldn't be to far off of that; around town, the 328 feels just as fast as that CS did.
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      Today, 02:50 PM   #79
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Quote:
Originally Posted by sirhawes View Post
You're right, but the engine will rev faster in a lower gear, so the slight drop in power is not worth shifting early for
You were right. I observed better 0-60 times with S mode!!

In S mode, it shifts from 1st to 2nd at around 5.5k, and 2nd to 3rd at about 6.7k. With M mode it was not possible as limiter kicked in at around 6.5k.
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