S63 M5/6 Jb4 questions

ARC550 · 07-01-2016, 08:11 PM

Figure I might as well start one.

I have a 2013 bmw M6 and have K&N filters resonator delete and the JB4 + BCM combo.

I randomly have issues with the jb4 on map 2. Boost is at 10psi till 5.5krpm then shoots! At 6k Rpm.

I guess this could be fuel max etc..
Is anyone else experiencing this? I'm getting a backend ecu flash next week and hoping his should fix it.

P.s I ran the revise map 1 and no issues.
Map 2 is giving issues.

13M5F10 · 07-01-2016, 08:18 PM

Have you posted on N54Tech? Terry with BMS is on there. Post your logs and he can help you out.

ARC550 · 07-01-2016, 08:19 PM

Quote:

Originally Posted by 13M5F10

Have you posted on N54Tech? Terry with BMS is on there. Post your logs and he can help you out.

Yea I emailed them. Didn't get a direct answer so I'm reaching out to community.

13M5F10 · 07-01-2016, 08:59 PM

Quote:

Originally Posted by ARC550

Quote:

Originally Posted by 13M5F10

Have you posted on N54Tech? Terry with BMS is on there. Post your logs and he can help you out.

Yea I emailed them. Didn't get a direct answer so I'm reaching out to community.

Reach out on N54 community. That's where most post about their issues and Terry is responsive within 24 hours.

When I had my issues with map 2 it was a faulty BCM. Fixed about replacement.

http://www.n54tech.com/forums/forumdisplay.php?f=33

erm324 · 07-01-2016, 10:16 PM

Do you have a CP M6? Non-CP will run lean on Map 2 (maxed fuel trims with high AFR), as where Map 1 should be fine.

ARC550 · 07-01-2016, 10:17 PM

Quote:

Originally Posted by erm324

Do you have a CP M6? Non-CP will run lean on Map 2 (maxed fuel trims with high AFR), as where Map 1 should be fine.

I don't have comp package. So essentially I'm maxing out and need Ecu backend flash to maximize fuel trim?

ur20v · 07-01-2016, 10:56 PM

Yes or run water/meth to add fuel and octane, Terry has posted many times Map 2 is a gamble as some cars (non CP) max out fuel trims so he suggests doing a few pulls and looking at the logs- sounds like you have done this and have the fule trim maxed so your choices are:

CP tune
Aftermarket flash
Meth injection.

ARC550 · 07-02-2016, 12:08 AM

Quote:

Originally Posted by ur20v

Yes or run water/meth to add fuel and octane, Terry has posted many times Map 2 is a gamble as some cars (non CP) max out fuel trims so he suggests doing a few pulls and looking at the logs- sounds like you have done this and have the fule trim maxed so your choices are:

CP tune
Aftermarket flash
Meth injection.

That is what I wanted to hear!

I will be doing backend flash tune next week.

Here is my question though.. The last 6 weeks did not have one issue with map and and now out of nowhere bam! This happens like once a month. I guess luck of the draw every time I turn on the car I guess.

Anyway if backend flash will fix it that's what it is.

ur20v · 07-02-2016, 02:28 AM

Might be your were just on the cusp of maxing out fuel trims and either adption over time or driving style etc pushs it over the edge.

Msizzle · 07-02-2016, 08:43 PM

i only run map 2 with 96 octane or better. I also have no meth so you are right on the edge of whats safe for the car.

Also what firmware are you on? 1.5 gave me the same issue, 1.4 I had none so i went back

ARC550 · 07-02-2016, 08:54 PM

Quote:

Originally Posted by Msizzle

i only run map 2 with 96 octane or better. I also have no meth so you are right on the edge of whats safe for the car.

Also what firmware are you on? 1.5 gave me the same issue, 1.4 I had none so i went back

1.4v gave issues went to 1.5v and had no issues, but slow.. Lol

So I went back to 1.4v and things work.

I'm tired of the BS so have appointment for ECU flash next week and done. Will stack with Jb4

erm324 · 07-02-2016, 09:31 PM

Rev 1.4, map 2, pump 93, CP-M5, no issues runs like a bat out of hell...haven't tried rev 1.5 yet

ARC550 · 07-02-2016, 11:31 PM

Quote:

Originally Posted by erm324

Rev 1.4, map 2, pump 93, CP-M5, no issues runs like a bat out of hell...haven't tried rev 1.5 yet

The comp pack helps lol.

The 1.5V is additive and I don't think it's faster.

If you want faster do a backend flash and Bam!

Msizzle · 07-02-2016, 11:42 PM

Quote:

Originally Posted by erm324

Rev 1.4, map 2, pump 93, CP-M5, no issues runs like a bat out of hell...haven't tried rev 1.5 yet

The comp package is ok on 93 for map 2, they don't max fuel trims either

HappyMan · 07-03-2016, 03:23 AM

Guys if I decide on jb4 bcm can I install it myself?

ur20v · 07-03-2016, 10:52 AM

Quote:

Originally Posted by HappyMan

Guys if I decide on jb4 bcm can I install it myself?

Yes, read All of Terry's sticky on the m5 JB4 at the top of the M forum and allow a day. It's VERY easy but if you are like me you over think it. Should take a couple of hours and no special tools etc.

Svenm5 · 07-03-2016, 02:02 PM

I have the exact same problem with the jb4, boost only kicks in at 5500rpm

ARC550 · 07-03-2016, 03:39 PM

Quote:

Originally Posted by Svenm5

I have the exact same problem with the jb4, boost only kicks in at 5500rpm

Yea!!! That's great news! It means that it's a common issue and not a problem with cars.
I'm getting my ecu flashed and will stack JB this Friday and will report back.

My advice is to either drive it stock or do a backend flash or a elf I'll ecu tune. Don't risk anything breaking.

Svenm5 · 07-04-2016, 03:53 PM

Did you already made some logs and send them to terry from bms?

FSociety · 07-05-2016, 04:19 PM

ARC550 friday before MpactEast you're roll racing Sat?

07-01-2016, 08:11 PM	#1
ARC550 Major 446 Rep 1,300 Posts Drives: M3, X5, 720s, X5, 750xi Join Date: Nov 2013 Location: New York iTrader: (0)	S63 M5/6 Jb4 questions Figure I might as well start one. I have a 2013 bmw M6 and have K&N filters resonator delete and the JB4 + BCM combo. I randomly have issues with the jb4 on map 2. Boost is at 10psi till 5.5krpm then shoots! At 6k Rpm. I guess this could be fuel max etc.. Is anyone else experiencing this? I'm getting a backend ecu flash next week and hoping his should fix it. P.s I ran the revise map 1 and no issues. Map 2 is giving issues.
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07-01-2016, 08:18 PM	#2
13M5F10 Hide! My wife's coming! 812 Rep 2,816 Posts Drives: 2013 BMW M5 \| MSR Stage 3 Join Date: Jun 2015 Location: Las Colinas, TX iTrader: (5)	Have you posted on N54Tech? Terry with BMS is on there. Post your logs and he can help you out. __________________ * SOLD * 2013 BMW M5 \| Space Grey \| MSR Stage 3 Tune \| Catless Downpipes \| MSR Intake and Charge Pipes \| MSR Exhaust (Prototype) \| Vorsteiner Rear Diffuser \| RW Carbon Front Lip \| RW Carbon Trunk Spoiler\| Vorsteiner VS-310 Forged Wheels \| Escort 9500CI w/Laser Jammers
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07-01-2016, 10:16 PM	#5
erm324 Major 122 Rep 1,202 Posts Drives: F10 M5 Join Date: Oct 2009 Location: NYC iTrader: (1)	Do you have a CP M6? Non-CP will run lean on Map 2 (maxed fuel trims with high AFR), as where Map 1 should be fine.
	Appreciate 1 Quote

07-01-2016, 10:56 PM	#7
ur20v Captain 184 Rep 788 Posts Drives: F10 M5 Join Date: Apr 2016 Location: WA Australia iTrader: (0)	Yes or run water/meth to add fuel and octane, Terry has posted many times Map 2 is a gamble as some cars (non CP) max out fuel trims so he suggests doing a few pulls and looking at the logs- sounds like you have done this and have the fule trim maxed so your choices are: CP tune Aftermarket flash Meth injection.
	Appreciate 0 Quote

07-02-2016, 02:28 AM	#9
ur20v Captain 184 Rep 788 Posts Drives: F10 M5 Join Date: Apr 2016 Location: WA Australia iTrader: (0)	Might be your were just on the cusp of maxing out fuel trims and either adption over time or driving style etc pushs it over the edge.
	Appreciate 0 Quote

07-02-2016, 08:43 PM	#10
Msizzle Lieutenant 165 Rep 402 Posts Drives: 2013 M6 Coupe Join Date: Mar 2015 Location: Long Island, NY iTrader: (0)	i only run map 2 with 96 octane or better. I also have no meth so you are right on the edge of whats safe for the car. Also what firmware are you on? 1.5 gave me the same issue, 1.4 I had none so i went back
	Appreciate 0 Quote

07-02-2016, 09:31 PM	#12
erm324 Major 122 Rep 1,202 Posts Drives: F10 M5 Join Date: Oct 2009 Location: NYC iTrader: (1)	Rev 1.4, map 2, pump 93, CP-M5, no issues runs like a bat out of hell...haven't tried rev 1.5 yet
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07-03-2016, 03:23 AM	#15
HappyMan First Lieutenant 24 Rep 313 Posts Drives: 2015 M5 Join Date: Apr 2014 Location: Central Asia iTrader: (0)	Guys if I decide on jb4 bcm can I install it myself?
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07-03-2016, 02:02 PM	#17
Svenm5 New Member 2 Rep 7 Posts Drives: f10 m5 Join Date: Jan 2016 Location: Belgium iTrader: (0)	I have the exact same problem with the jb4, boost only kicks in at 5500rpm
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07-04-2016, 03:53 PM	#19
Svenm5 New Member 2 Rep 7 Posts Drives: f10 m5 Join Date: Jan 2016 Location: Belgium iTrader: (0)	Did you already made some logs and send them to terry from bms?
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07-05-2016, 04:19 PM	#20
FSociety IG @bmwF9xG80 3813 Rep 7,593 Posts Drives: G80 M3, X4M, G07 X7m50 Join Date: Apr 2012 Location: NYC to NJ to Orlando FL iTrader: (3) Garage List 2023 BMW G80 M3 [0.00] 2020 BMW X4MC [0.00] 16' BMW X4 M40i [10.00] 06 Cadillac STS [0.00]	ARC550 friday before MpactEast you're roll racing Sat? __________________ 60-130mph 6.5s X4M #HCP 60-130mph 5.0s G80 M3 #OrlandoAutowerks Sauce IG: @bmwF9XG80
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