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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 > MHD Flash Only in Sport Mode?



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      03-30-2016, 12:20 AM   #1
dkinaev
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MHD Flash Only in Sport Mode?

Hi, I've got a bone stock 2007 auto 335i. Was wondering if its possible to have the MHD flash only in Sport mode, while retaining the stock map in drive?

Cheers!
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      03-30-2016, 12:47 AM   #2
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Quote:
Originally Posted by dkinaev View Post
Hi, I've got a bone stock 2007 auto 335i. Was wondering if its possible to have the MHD flash only in Sport mode, while retaining the stock map in drive?

Cheers!
Not possible... since it has to flash the map while the vehicle is off.
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      03-30-2016, 01:04 AM   #3
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LOL

Subscribed for all inevitable hilarious responses.
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      03-30-2016, 01:10 AM   #4
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in this very specific case, even as a mhd supporter, i would recommend jb4.....
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      03-30-2016, 01:29 AM   #5
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Quote:
Originally Posted by Jozy View Post
in this very specific case, even as a mhd supporter, i would recommend jb4.....
Why?
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      03-30-2016, 02:09 AM   #6
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Indeed Why?? lol
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      03-30-2016, 02:39 AM   #7
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Because on n54 you can turn jb4 off/on and change maps on the fly from steering wheel.
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      03-30-2016, 03:10 AM   #8
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Quote:
Originally Posted by Jozy
in this very specific case, even as a mhd supporter, i would recommend jb4.....
Agreed.
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      03-30-2016, 03:30 AM   #9
dkinaev
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OK.. thanks. interesting.. it would be a nice feature to have a daily stock map in drive and a more aggressive one in sport mode though.. Wonder what the limits of the flash is.
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      03-30-2016, 04:48 AM   #10
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It serves no purpose. You can have the flash in standard transmission mode and not abuse the car. The fact that you have the flash on in D does not need you have to drive it as hard meaning you should just leave it on as it is and if you wish drive it. The car it is within its parameters anyway...
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      03-30-2016, 05:15 AM   #11
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Quote:
Originally Posted by Rashman94 View Post
Because on n54 you can turn jb4 off/on and change maps on the fly from steering wheel.
And doing so without a back end flash does all sorts of weird shit to fuel trims and adaptations. No thanks.
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      03-30-2016, 05:18 AM   #12
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You can customize the pedal sensitivity between D and S with a custom flash, if, for some reason, you want this. You can MAYBE change the max power in one mode or the other simply by putting a lower number in the far right cells instead of 100.
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      03-30-2016, 03:17 PM   #13
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Quote:
Originally Posted by bradsm87 View Post
And doing so without a back end flash does all sorts of weird shit to fuel trims and adaptations. No thanks.
Elaborate on this 'weird shit'. I've only ever heard of jb4 issues with lower octane levels, I.E. ACN91
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      04-04-2016, 06:24 AM   #14
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So am I the only who thinks that it would nice to retain "Sports Mode" as a feature vs normal drive with MHD???
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      04-04-2016, 06:53 AM   #15
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Quote:
Originally Posted by dkinaev View Post
So am I the only who thinks that it would nice to retain "Sports Mode" as a feature vs normal drive with MHD???
What do you mean by retain sports mode? From factory, it changes the transmission map and throttle mapping and nothing else. MHD doesn't change the transmission map at all and with a custom map, you can set the throttle mapping to whatever you like individually between D and S/M modes. I have mine set up like this myself.
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      04-04-2016, 06:53 AM   #16
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Quote:
Originally Posted by dkinaev View Post
So am I the only who thinks that it would nice to retain "Sports Mode" as a feature vs normal drive with MHD???
Sport mode still works with MHD flash. My sport button still does what used to to, and moving the shifter left into sport still does what it used to.
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      04-04-2016, 06:56 AM   #17
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Quote:
Originally Posted by theweebabySeamus View Post
Elaborate on this 'weird shit'. I've only ever heard of jb4 issues with lower octane levels, I.E. ACN91
Probably nothing noticeable by the driver. Just one map has huge fuel trims and timing corrections then next minute, you're on Map 4 or 0 and there is no knock detected and fuel trims are completely different. It means long term fuel trims can't do their job and probably many other adaptation values. A back end flash fixes all of this so the DME always sees close to the actual boost.
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      04-04-2016, 09:55 AM   #18
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I think what he's looking for is valet/"wife mode" (sure honey, you can drive it, just put it in D and go) while not letting them abuse it. could be wrong, but that's what it seems like. IF that's the case, yeah, a jb4 might be just what you want.
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      04-04-2016, 05:31 PM   #19
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Just cause its in "D" doesnt mean you have to drive like one.
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      04-04-2016, 05:45 PM   #20
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It would be possible I'm sure. Since MHD has the ability to write custom logic they could have two load target tables, one for D and one for Sport.

Would be a complete waste of time though as I can't imagine many people actually wanting the car in stock tune.
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      04-04-2016, 05:59 PM   #21
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I think the idea is mileage plus maintenance and reliability. While a tuned non-FBO car isn't much more unreliable than a stock car, you are going to burn through plugs and coils faster, and so on.

I can see the appeal, though it's not a big deal to me.
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      04-04-2016, 06:04 PM   #22
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I think changing engine performance based on Drive vs. Sport/Manual modes would be quite cool, especially since our cars don't have a "Sport" button per se.

Drive mode could use all stock tables, while Sport/Manual use the MHD tables. Perhaps this could be a user option too so everyone is happy.
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