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Technical Topics B58 6-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications '22 M440i JB4 Map 2 problems

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      09-04-2022, 03:02 AM   #1
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'22 M440i JB4 Map 2 problems

I usually run on map 5 on my car but i recently tried map 2 with a e25 mix and it is terrible. The boost comes but cuts off and the car starts to shake. Whenever i floor it, the car will try to make boost but it bogs down hard. Any Suggestions?
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      09-04-2022, 03:03 AM   #2
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Quote:
Originally Posted by Harout View Post
I usually run on map 5 on my car but i recently tried map 2 with a e25 mix and it is terrible. The boost comes but cuts off and the car starts to shake. Whenever i floor it, the car will try to make boost but it bogs down hard. Any Suggestions?
I recently emailed terry for solutions and he said you can't run map 1 or 2 when you have a downpipe apparently. The additive maps don't work good with downpipe
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      09-04-2022, 10:00 AM   #3
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im surprised to hear that, but Terry knows best
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      09-04-2022, 04:03 PM   #4
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So what map should I be running with a downpipe? running 93 for now
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      09-04-2022, 04:04 PM   #5
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Quote:
Originally Posted by triplethreat4597 View Post
So what map should I be running with a downpipe? running 93 for now
Map 5 is the safest one that i run on the daily. I also run it with e25 mix because i heard a couple of m440s running badly with e30mix
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      09-04-2022, 06:54 PM   #6
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Quote:
Originally Posted by Harout View Post
Map 5 is the safest one that i run on the daily. I also run it with e25 mix because i heard a couple of m440s running badly with e30mix
How long have you been running on map 5 with a E25 mix? And had you had any problems?
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      09-04-2022, 08:57 PM   #7
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Stop messing around with ots maps and get with jesse dabears for custom map.
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      09-05-2022, 08:09 AM   #8
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Quote:
Originally Posted by GD1981 View Post
Stop messing around with ots maps and get with jesse dabears for custom map.
Can someone provide contact for this guy?
I am on AA downpipe and was planning to run map2 on 93 oct.
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      09-05-2022, 02:08 PM   #9
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Quote:
Originally Posted by triplethreat4597 View Post
So what map should I be running with a downpipe? running 93 for now
Per an earlier post, Terry recommends maps 5. But on their website, it show that they recommend map 2 for your application

I'm going to confirm with BMS and update this thread

Map Guide as of v15+ firmware:

Map0: Stock tuning, fully disable JB4
Map1: Additive map with peak of 3psi over stock added (91 octane)
Map2: Additive map with peak of 4psi over stock added (91-93 octane)
Map3: Additive map with peak of 6psi over stock added (93+ octane)
Map4: Absolute target map with peak of 20psi target (93+ and/or E30 octane) suggested for higher boost models like G chassis, Supra, and Z4. EWG required for proper control.
Map5: Absolute target map with peak of 22psi target (E30+ fuel) suggested for higher boost models like G chassis, Supra, and Z4. EWG required for proper control.
Map6: Custom tuning map allowing both additive (below 10psi) and absolute (above 10psi) targeting. Setting RPM1500 boost below 5.7psi will make entire map6 additive, setting above 6psi will make entire map6 absolute target.
Map7: WMI map (boost varies based on WMI additive, meth flow, and other criteria)
Map8: VALET / Low Boost Map
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      09-05-2022, 02:14 PM   #10
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Quote:
Originally Posted by totalone View Post
Can someone provide contact for this guy?
I am on AA downpipe and was planning to run map2 on 93 oct.
https://instagram.com/mkv_zupr4?igshid=YmMyMTA2M2Y=
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      09-05-2022, 02:24 PM   #11
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Just confirmed with Terry, Gen2 B58 can run Map 5
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      09-05-2022, 02:32 PM   #12
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Quote:
Originally Posted by mike@x-ph.com View Post
Just confirmed with Terry, Gen2 B58 can run Map 5
Ya Map 2 has really high boost spikes and I can't daily it at all
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      09-06-2022, 08:57 AM   #13
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Quote:
Originally Posted by mike@x-ph.com View Post
Just confirmed with Terry, Gen2 B58 can run Map 5
This starting to get really complicated... I am trying to understand what to do here.

So Those who own m240, m340, m440 can run map5 on 93 octane no mixture? Does it matter if we run AA downpipe or any other high flow downpipe?

I also reached out to Terry and will post a thread if he gets back to me so we all can have a clear understanding what to run with mix/no mix, with/our downpipe.
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      09-06-2022, 09:12 AM   #14
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Quote:
Originally Posted by totalone View Post
This starting to get really complicated... I am trying to understand what to do here.

So Those who own m240, m340, m440 can run map5 on 93 octane no mixture? Does it matter if we run AA downpipe or any other high flow downpipe?

I also reached out to Terry and will post a thread if he gets back to me so we all can have a clear understanding what to run with mix/no mix, with/our downpipe.
its really not that complicated

Map5: Absolute target map with peak of 22psi target (E30+ fuel) suggested for higher boost models like G chassis, Supra, and Z4. EWG required for proper control.

if you have a G chassis, Supra or Z4. Run map 5 with any setup.
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      09-06-2022, 09:44 AM   #15
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Quote:
Originally Posted by mike@x-ph.com View Post
its really not that complicated

Map5: Absolute target map with peak of 22psi target (E30+ fuel) suggested for higher boost models like G chassis, Supra, and Z4. EWG required for proper control.

if you have a G chassis, Supra or Z4. Run map 5 with any setup.
This is what I am confused about
Map5: Absolute target map with peak of 22psi target (E30+ fuel)

I do not mix, and map5 indicates E30+ fuel. So for those who are not mixing are we still sticking to map5 with pure 93 octane?
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      09-06-2022, 09:49 AM   #16
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Quote:
Originally Posted by totalone View Post
This is what I am confused about
Map5: Absolute target map with peak of 22psi target (E30+ fuel)

I do not mix, and map5 indicates E30+ fuel. So for those who are not mixing are we still sticking to map5 with pure 93 octane?
F chassis need E30+ to run map 5

G chassis can run map 5 with any setup
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      09-06-2022, 10:29 AM   #17
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Quote:
Originally Posted by mike@x-ph.com View Post
F chassis need E30+ to run map 5

G chassis can run map 5 with any setup
Thank you for clarifying this man.
Just note for someone new like me, running anything after map3, you will need to connect EWG connector.
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      09-07-2022, 08:53 AM   #18
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Quote:
Originally Posted by totalone View Post
Thank you for clarifying this man.
Just note for someone new like me, running anything after map3, you will need to connect EWG connector.
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