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2Addicts | BMW 2-Series forum Technical Topics B58 (M240i) Engine, Transmission, Exhaust, Tuning M240i jb4 on YT

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      09-23-2016, 03:41 AM   #1
Bee Pee
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M240i jb4 on YT

Impressive. They quote map 5 but no idea what map 5 does on b58 jb4.....

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      09-23-2016, 07:42 AM   #2
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there's no map 5 for B58
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      09-23-2016, 07:46 AM   #3
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Quote:
Originally Posted by 135iDCT View Post
there's no map 5 for B58
You & I know that but matey who posted this on YT seems to think there is !!!

If this is just map 1 - even more impressive !!!
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      09-24-2016, 01:36 AM   #4
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Impressive indeed.

Not sure how he gets so much traction off the line; my M135i with JB4/DP/E30 is having major traction issues at the strip (even with boost limits set in 1st and 2nd). Didn't try getting heat into my PSS' first which I'll try next time (and I'm sure part of it is technique).
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      09-24-2016, 05:12 PM   #5
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Quote:
Originally Posted by Arrow29 View Post
Impressive indeed.

Not sure how he gets so much traction off the line; my M135i with JB4/DP/E30 is having major traction issues at the strip (even with boost limits set in 1st and 2nd). Didn't try getting heat into my PSS' first which I'll try next time (and I'm sure part of it is technique).
I'd imagine it has a lot to do with the AT. Those gears are just so damn short 1-3rd. Probably doesn't make full boost until 2nd gear, then before it can even hook up in 2nd, it goes into 3rd and bites hard. You can see it breaking traction a bit, but in a very "composed" fashion. Great job on BMW and the ZF8AT, I think it's a great option for those who like to bang on the paddles and do some drag racing. It's almost as good as a dual clutch, without the long term fears of owning a dual clutch equipped vehicle.
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