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2Addicts | BMW 2-Series forum Technical Topics B58 (M240i) Engine, Transmission, Exhaust, Tuning Jb4 map suggestions

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      10-23-2019, 03:02 PM   #1
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Jb4 map suggestions

So I installed my jb4 on my 19' M240. I'm running a dinan mid pipe and a dinan intake. According to the map guide It appears I can run Map 3? I run only 93 octane. I was also curious about Map 5. Any advantage of running either or? I figured certain maps would require certain mods but it doesn't really specify on their site, just what psi over stock it runs.
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      10-23-2019, 07:39 PM   #2
este
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Try 5 it auto adjusts
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      10-24-2019, 06:35 AM   #3
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Quote:
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Try 5 it auto adjusts
That's why I listed I have a b58. You have/had an N54/55 and this is map 5 for you guys "Map 5: Autotuning. Adjusts boost curve from 11psi peak to 16psi peak based on octane, mods, climate, etc. For those running E85 fuels up to a 40% mix can be used along with the flex fuel add on connector."

That's totally different than a map 5 for a B58.
"Map5: Additive map with peak of 6psi over stock added & intake temperature signal spoofed lower to increase timing advance"
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      10-24-2019, 10:15 AM   #4
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Quote:
Originally Posted by 240Newbie View Post
So I installed my jb4 on my 19' M240. I'm running a dinan mid pipe and a dinan intake. According to the map guide It appears I can run Map 3? I run only 93 octane. I was also curious about Map 5. Any advantage of running either or? I figured certain maps would require certain mods but it doesn't really specify on their site, just what psi over stock it runs.
you need downpipes for map 5
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      10-24-2019, 02:05 PM   #5
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you need downpipes for map 5
Ok cool, just what I was wondering. They don't really specify what each map is for, just what it does. Don't wanna jack up my car. lol
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      10-24-2019, 03:34 PM   #6
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Quote:
Originally Posted by 240Newbie View Post
Ok cool, just what I was wondering. They don't really specify what each map is for, just what it does. Don't wanna jack up my car. lol
its different for every car, i always recommend datalogging when using a new map
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      11-14-2019, 12:02 PM   #7
heusing240i
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What firmware are we talking about here? I'm not sure what I should be running on my 18' 240i with BMS CAI and VRSF ctles DP running 93 octane. It's been hit and miss with Map 2/3 on performance. Would map 5 benefit?
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