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Hazard Hazard is offline
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Default N63 JB4 Beta Trims Maxing out, even on Map 0 - 08-17-2017, 03:40 PM

As the title says, I have a 2011 550i with the JB4 Beta w/BCM installed.
My Trims keep maxing out no matter what map I have it on, and regardless of the fuel i use.
I have tried 91, E30, E35, and E66
I will run a race fuel mix (91 + 108, mixed to about 105 octane) this weekend and check results.
If trims are maxing out, even on stock map, what does that mean?
Fuel pump bad? Injectors bad?
Not getting enough fuel, right?
Any ideas?

Attached are some logs of map 0 and 1.
All on the same day and same highway drive.
Attached Files
File Type: csv Map 0 91.csv (4.6 KB, 121 views)
File Type: csv Map 1 4th gear.csv (3.2 KB, 120 views)
File Type: csv Map 1 spirited driving.csv (7.7 KB, 123 views)
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535_BiTurbo 535_BiTurbo is offline
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Default 08-17-2017, 09:52 PM

hopefully Terry can chime in soon


2012 550i M sport - JB stage 1
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BMRDude BMRDude is offline
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Default 08-18-2017, 08:15 AM

I think this should be posted on the Support forum, however a few comments...

Comparing to my own 550 your fpl and fph both look fine.
You are getting good boost numbers for Map 1.
Yes, trims are maxing out and afr looks high but your runs are short so hard to tell for sure.

You seem to be doing a fair amount of testing using ethanol fuels, E30, etc ?
My experience is that the 550 maxes out fuel very quickly using any ethanol fuel. So I stay away from them. Yes, they give you the octane but you run out of fuel real quick and this seems to be your problem.

Note also, many 91 octane pump fuels already have 10% ethanol in them. I only run Chevron 94 because it has zero ethanol. This gives me max fuelling capacity and a known base to make additions and changes.
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Hazard Hazard is offline
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Default 08-18-2017, 09:44 AM

Yes i started with the same amount of E85, actually a gallon less, as the BMS test vehicle.
Tapered down as the symptoms didnt change. I ran Map 1 on full 91 octane with the same results. I cant seem to get my trims down. I feel some hesitation at WOT most of the time, occasionally i feel a good pull but thats maybe 3% of the time.
Im leaning toward it being an issue with the car, not the JB4.
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BMRDude BMRDude is offline
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Default 08-18-2017, 10:06 AM

your logs look ok except for the high trims. I would change your base fuel. Try some from a different source. 91 pump gas is definitely not the same everywhere. I guess 91 is the best pump gas you can find?
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Hazard Hazard is offline
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Default 08-18-2017, 10:21 AM

Yeah, 91 is the highest in my area, i live in the Southwest.
Right now I am running 109 race fuel mixed down to about 101 octane and same thing, so I dont think it is the fuel.
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Default 09-28-2017, 09:06 PM

What's your FOL set at under User Settings? Try bumping that up 10 points and see if it helps. It's my understanding that it'll either help if you don't go too high or it'll kick you a reduced power warning if you go too high. My X5M was stock at 60, I'm currently running 80 but I'll get warnings when I get to 90, just an FYI.


'10 BMW X5///M - Alpine White on Sakhir Orange - HCP Stage 2/JB4, NGK 97506 @ .20, SS intake w/ BMC filters, gutted cats, muffler delete & Vibrant 1794's, AC Forged 312 22's, H&R 2"
'08 BMW 535xiT - MHD 1+, BMS DCI, RB/Mishimoto, VRSF 7"
'98 BMW 740iL - ///E39 M5 6spd swap, fully built engine (sleeved, P&P, cams), 3.46 LSD, H&R Stage 2/Bilstein HD, Magnaflow 14816's
'97 BMW 328ci - ///E36 M3 clutch, L/W flywheel, 3.23LSD, Z4///M staggered 18's
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Default 10-19-2017, 07:32 PM

Bump for Hazard. I also would suggest going at least one step colder plugs with a tighter gap.


'10 BMW X5///M - Alpine White on Sakhir Orange - HCP Stage 2/JB4, NGK 97506 @ .20, SS intake w/ BMC filters, gutted cats, muffler delete & Vibrant 1794's, AC Forged 312 22's, H&R 2"
'08 BMW 535xiT - MHD 1+, BMS DCI, RB/Mishimoto, VRSF 7"
'98 BMW 740iL - ///E39 M5 6spd swap, fully built engine (sleeved, P&P, cams), 3.46 LSD, H&R Stage 2/Bilstein HD, Magnaflow 14816's
'97 BMW 328ci - ///E36 M3 clutch, L/W flywheel, 3.23LSD, Z4///M staggered 18's
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Morebs4me Morebs4me is offline
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Default 04-07-2018, 11:14 PM

Maybe unmetered air getting in, do you have the full jb4 connected with fuel wires and all? Having the bcm I would think so, maybe a dying fuel pump but I would expect to see fuel pressure codes. Find someone with ista and see if there’s codes the jb4 can’t see
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Morebs4me Morebs4me is offline
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Default 04-07-2018, 11:16 PM

His fol shows 80, which should be fine. I wouldn’t expect to be injectors although if it’s running funny it’s a possibility. Maybe check for damaged vacuum lines
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CedarPerformance CedarPerformance is offline
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Default 04-15-2018, 12:24 PM

Quote:
Originally Posted by Hazard
As the title says, I have a 2011 550i with the JB4 Beta w/BCM installed.
My Trims keep maxing out no matter what map I have it on, and regardless of the fuel i use.
I have tried 91, E30, E35, and E66
I will run a race fuel mix (91 + 108, mixed to about 105 octane) this weekend and check results.
If trims are maxing out, even on stock map, what does that mean?
Fuel pump bad? Injectors bad?
Not getting enough fuel, right?
Any ideas?

Attached are some logs of map 0 and 1.
All on the same day and same highway drive.
I think you are doing too much at once. Set your JB4 to Map 0 (Not Map 4, his tools wont work. Map 0.) and take the car to a BMW guy, and have him reset the adaptations. I don't think the N63 JB4 has this script written into it, BMS Support would have to verify that.

Anywho, once you have some cleared up adaptations, stick to the same fuel source and stick to the same Boost Map/Boost Target log the car in Map 1 only. Map 1 is a Pump Gas map, and should be safe on 91 octane. Do not keep flipping between Map 1 and 4 doing logs for comparison. I don't really see the point in that anyway. Regardless of what boost target you have, what fuel you have, whatever, you always want trims to be as close to 25 as possible, so there's no point in comparison.

Running Map 1 there is no reason to run Ethanol except for the guys who are hoping to get more power through igniting more fuel. There shouldn't be any need for race gas either, however race gas will have the same AFR as pump gas, so that shouldn't matter.
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Default 09-06-2018, 06:12 PM

Quote:
Originally Posted by BMRDude
You seem to be doing a fair amount of testing using ethanol fuels, E30, etc ?
My experience is that the 550 maxes out fuel very quickly using any ethanol fuel. So I stay away from them. Yes, they give you the octane but you run out of fuel real quick and this seems to be your problem.
I seem to have the same problems running any E85 mixes...maxed trims, throttle closures, etc. I've asked randomly about a LPFP replacement w/ a Walbro 450 or something along those lines since it's very conmon on N54's but no one answers or comes through.


'10 BMW X5///M - Alpine White on Sakhir Orange - HCP Stage 2/JB4, NGK 97506 @ .20, SS intake w/ BMC filters, gutted cats, muffler delete & Vibrant 1794's, AC Forged 312 22's, H&R 2"
'08 BMW 535xiT - MHD 1+, BMS DCI, RB/Mishimoto, VRSF 7"
'98 BMW 740iL - ///E39 M5 6spd swap, fully built engine (sleeved, P&P, cams), 3.46 LSD, H&R Stage 2/Bilstein HD, Magnaflow 14816's
'97 BMW 328ci - ///E36 M3 clutch, L/W flywheel, 3.23LSD, Z4///M staggered 18's
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Default 11-15-2018, 02:20 AM

Bump for updates.


'10 BMW X5///M - Alpine White on Sakhir Orange - HCP Stage 2/JB4, NGK 97506 @ .20, SS intake w/ BMC filters, gutted cats, muffler delete & Vibrant 1794's, AC Forged 312 22's, H&R 2"
'08 BMW 535xiT - MHD 1+, BMS DCI, RB/Mishimoto, VRSF 7"
'98 BMW 740iL - ///E39 M5 6spd swap, fully built engine (sleeved, P&P, cams), 3.46 LSD, H&R Stage 2/Bilstein HD, Magnaflow 14816's
'97 BMW 328ci - ///E36 M3 clutch, L/W flywheel, 3.23LSD, Z4///M staggered 18's
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Terry @ BMS Terry @ BMS is online now
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Default 11-15-2018, 10:47 AM

Would have to see the N63 log for any tuning advice.


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