N54Tech.com - Your Source for International Turbo BMW Racing Discussion
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crazyyardie crazyyardie is offline
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Default 09-11-2017, 05:03 AM

Is there any downside to setting menu 10 @ 5000rpm I have fresh stage 1 turbos with upgraded wastegates

Menu 12 is at 2800rpm but I realize that at part throttle going to full throttle. The car would overboost and then settles at pre set boost levels. Should I try going down on the value to 2600rpm or should I go up with it 3000 rpm
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dubluv17 dubluv17 is offline
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Default 09-18-2017, 01:08 PM

Here's my experience with menu 11:

When I was looking into these settings, I kept seeing suggestions to have a high setting here. So I initially set it to 5000. At the time, I had made many other changes to the car as well (BEF, E85 map, then new experimental changes to maps 10, 11 and 12). I noticed how my car became increasingly more difficult to start smoothly from a stop. I was having issues engaging first gear from a stop, as well as shifting smoothly into second gear. Once, I got into first gear, it seemed like the car would go from kinda laggy to boosting with the same throttle input. In other words, the car would just kinda take off out of nowhere. Very hard to control. I'd also been driving an old manual 4runner a lot, so switching between the cars was weird enough to warrant poor clutch work/shifting. Anyways, it was finally bugging me enough that I buckled down and started looking into it more. I decided that it was within map 11, and it was. Here's my advice to people that are experiencing power delivery issues in first and second gear.

1. Log your throttle input when casually driving. Do this from a stop, and also through your gears. For me, I was expecting much lower throttle percentage numbers than I was actually getting. This helped me understand the map 11 settings better.
2. Look at the attached image, and pick a setting slightly above what you calculated your average 'partial throttle' input to be. For me, I think it was around 17-20. I'm still dialing mine in. The image helps visualize the range of settings and how they affect boost.
3. Once you have a starting point established, do some driving and adjust from there. Remember that throttle is an active system that adjusts independently of your input. This is why it's important to log the throttle while testing.

I ended up setting mine to 3000, atm, and it's much easier to control casual starts and 1-2 shifting. Anyways, just my .02. Some people like 5000, obviously, so it's all up to you.
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Last edited by dubluv17; 09-18-2017 at 03:59 PM.. Reason: forgot something
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vwetish vwetish is offline
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Default 09-18-2017, 03:49 PM

Per BMS recommended is 0 for menu 11
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crazyyardie crazyyardie is offline
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Default 09-18-2017, 03:56 PM

Quote:
Originally Posted by dubluv17
Here's my experience with menu 11:

When I was looking into these settings, I kept seeing suggestions to have a high setting here. So I initially set it to 5000. At the time, I had made many other changes to the car as well (BEF, E85 map, then new experimental changes to maps 10, 11 and 12). I noticed how my car became increasingly more difficult to start smoothly from a stop. I was having issues engaging first gear from a stop, as well as shifting smoothly into second gear. I'd also been driving an old manual 4runner a lot, so switching between the cars was weird enough to warrant poor clutch work/shifting. Anyways, it was finally bugging me enough that I buckled down and started looking into it more. I decided that it was within map 11, and it was. Here's my advice to people that are experiencing power delivery issues in first and second gear.

1. Log your throttle input when casually driving. Do this from a stop, and also through your gears. For me, I was expecting much lower throttle percentage numbers than I was actually getting. This helped me understand the map 11 settings better.
2. Look at the attached image, and pick a setting slightly above what you calculated your average 'partial throttle' input to be. For me, I think it was around 17-20. I'm still dialing mine in. The image helps visualize the range of settings and how they affect boost.
3. Once you have a starting point established, do some driving and adjust from there. Remember that throttle is an active system that adjusts independently of your input. This is why it's important to log the throttle while testing.

I ended up setting mine to 3000, atm, and it's much easier to control casual starts and 1-2 shifting. Anyways, just my .02. Some people like 5000, obviously, so it's all up to you.

I had mine set at 5000 and i felt what u experienced so I tried carrying it down to 3000rpm. It felt slow so I adjusted it upto 4000rpm felt like a better in between.
I'm also 6mt but I wonder what effect it would have on 60ft
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dubluv17 dubluv17 is offline
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Default 09-18-2017, 03:56 PM

Source? I always have the hardest time finding any recommendation from BMS or info about the JB4, for that matter. I'm not mad at all, it's just been really tough for me to find certain pieces of info. No boost till 45% might be better than it sounds, but it sounds kinda laggy. I'm definitely gonna lower mine to see how it feels. Thanks for your input.
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dubluv17 dubluv17 is offline
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Default 09-18-2017, 04:00 PM

Quote:
Originally Posted by crazyyardie
I had mine set at 5000 and i felt what u experienced so I tried carrying it down to 3000rpm. It felt slow so I adjusted it upto 4000rpm felt like a better in between.
I'm also 6mt but I wonder what effect it would have on 60ft
Well, during a 60ft, you're 100% throttle, so you'd instantly be passed that throttle threshold. Shouldn't affect it at all.
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Default 09-18-2017, 04:08 PM

Quote:
Originally Posted by dubluv17
Well, during a 60ft, you're 100% throttle, so you'd instantly be passed that throttle threshold. Shouldn't affect it at all.
I don't have limited slip So when it's on 5000 I kinda modulate the gas pedal when I launch to help cut wheel spin n my 1st boost is set at 12psi
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vwetish vwetish is offline
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Default 09-18-2017, 04:11 PM

Quote:
Originally Posted by dubluv17
Source? I always have the hardest time finding any recommendation from BMS or info about the JB4, for that matter. I'm not mad at all, it's just been really tough for me to find certain pieces of info. No boost till 45% might be better than it sounds, but it sounds kinda laggy. I'm definitely gonna lower mine to see how it feels. Thanks for your input.
Post #48. Terry prefers menu 11 set at 0. I have read that in other threads as well.
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dubluv17 dubluv17 is offline
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Default 09-18-2017, 04:11 PM

Quote:
Originally Posted by crazyyardie
I don't have limited slip So when it's on 5000 I kinda modulate the gas pedal when I launch to help cut wheel spin n my 1st boost is set at 12psi
Oh, I see what you're saying. Maybe just change it on race night then. Probably the simplest solution.
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dubluv17 dubluv17 is offline
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Default 09-18-2017, 04:15 PM

Quote:
Originally Posted by vwetish
Post #48. Terry prefers menu 11 set at 0. I have read that in other threads as well.
Totally missed that, my bad
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dubluv17 dubluv17 is offline
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Default 09-18-2017, 07:11 PM

Just got back from driving around and I definitely prefer 0 on menu 11. It really makes casual driving so much easier and smoother. I'd recommend, if you're not sure what setting you want, trying 0 for a few minutes and then switching to 5000 for a few minutes. This will absolutely give you an idea of what menu 11 does.
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N54QC N54QC is offline
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Default 09-18-2017, 07:56 PM

With a proper tune, IMO you won't find yourself raising menu 11 up to a high value. Plus the car feels more linear and less jerky. I had menu 11 set high before like 4500 trying to get into boost quicker so the car was peppy, but you get more a jerk sensation and it's less appealing just driving around. Now with my tune and I believe menu 11 is set around 3000, it feels right.


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Default 09-18-2017, 09:16 PM

not sure if i missed it but what about for single turbo,does the 0 value recommened apply there too for menu 11?


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dubluv17 dubluv17 is offline
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Default 09-19-2017, 07:17 AM

Quote:
Originally Posted by Logan
not sure if i missed it but what about for single turbo,does the 0 value recommened apply there too for menu 11?
Try 0 and then try 5000 to get an idea of each side of the spectrum. After that, it's all up to you and what feels best.
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