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      09-22-2020, 09:56 AM   #1
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M50i JB4 Logs

If anyone is interested in seeing the logs
car is stock (resonator delete) waiting on downpipes install

1st log - 4th gear from 2k to redline map 2
2nd log - 3rd gear from 2k to redline, Map 0 and Map 2 are on the same log


I reached out to burger tuning to see if there are any tweeks that need to be done and if I am able to run map 3 and 5
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      09-22-2020, 01:23 PM   #2
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      09-22-2020, 01:48 PM   #3
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Interesting logs.
Looks like the JB4 is adding about 6 lbs of boost over what is displyed in the ecu column. I'm guessing that this ecu column is the value being fed to the ecu by the JB4 and the "boost" column is the actual pressure sensor reading that results after JB4 map #2 intervention.
The measured AFRs are a bit leaner than what I would have expected. I'm guessing once again by assuming that the ecu's factory "tune" via its look-up tables is fueling to accomplish these commanded afrs.
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      09-22-2020, 02:01 PM   #4
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Quote:
Originally Posted by speedyman View Post
Interesting logs.
Looks like the JB4 is adding about 6 lbs of boost over what is displyed in the ecu column. I'm guessing that this ecu column is the value being fed to the ecu by the JB4 and the "boost" column is the actual pressure sensor reading that results after JB4 map #2 intervention.
The measured AFRs are a bit leaner than what I would have expected. I'm guessing once again by assuming that the ecu's factory "tune" via its look-up tables is fueling to accomplish these commanded afrs.
I contacted Burger Tuning and got confirmation that map 2 looks good from the logs I sent.
Waiting to hear if I can run map 3 and/or map 5 when my downpipes are in
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      09-22-2020, 02:10 PM   #5
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Quote:
Originally Posted by Tim2189 View Post
I contacted Burger Tuning and got confirmation that map 2 looks good from the logs I sent.
Waiting to hear if I can run map 3 and/or map 5 when my downpipes are in
Excellent, it will be interesting to hear what they advise. Please let us know.
The big question is whether it "feels" stronger running Map 2. I would guess that 6 lbs of additional boost should be a good boost in tq and over all pull.
Also wondering how much more than 22lbs of boost we can run on these motors, that's getting up there on a stock motor.
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      09-22-2020, 02:22 PM   #6
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Quote:
Originally Posted by speedyman View Post
Excellent, it will be interesting to hear what they advise. Please let us know.
The big question is whether it "feels" stronger running Map 2. I would guess that 6 lbs of additional boost should be a good boost in tq and over all pull.
Also wondering how much more than 22lbs of boost we can run on these motors, that's getting up there on a stock motor.
The Butt Dyno deff feels a difference between map 0 and 2. for couple hundred bucks and 45 min install I think it is sufficient enough.
I would love to see some logs from an X5M to see what their stock boost is
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      09-22-2020, 03:01 PM   #7
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Quote:
Originally Posted by Tim2189 View Post
The Butt Dyno deff feels a difference between map 0 and 2. for couple hundred bucks and 45 min install I think it is sufficient enough.
I would love to see some logs from an X5M to see what their stock boost is
Can you post the graphed logs? From the tabular data, there appears to be some big timing shifts. That can be KR.
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      09-22-2020, 03:04 PM   #8
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Quote:
Originally Posted by 130FeetDeep View Post
Quote:
Originally Posted by Tim2189 View Post
The Butt Dyno deff feels a difference between map 0 and 2. for couple hundred bucks and 45 min install I think it is sufficient enough.
I would love to see some logs from an X5M to see what their stock boost is
Can you post the graphed logs?
This?
Keep in mind the 2nd graph has 2 logs
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      09-22-2020, 03:34 PM   #9
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Quote:
Originally Posted by Tim2189 View Post
This?
Keep in mind the 2nd graph has 2 logs
AFRs are rock solid, so there is more than enough fuel to run that boost.

Question 1... are you on the throttle the entire way? I assume yes because pedal shows 100, but the logs are showing the throttle fluttering quite a bit.

Question 2... if you aren't coming off the throttle, then I am curious why the boost is so much less on the second run of the second log. I don't see boost target, so it is hard to say what the JB is requesting.

I don't think you are knocking for what it is worth. There are just some oddities. I am positive you could run more boost once you get the new DPs in there too. I would love to see a log running Map zero so we know what is normal with the N63R.

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      09-22-2020, 03:55 PM   #10
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Quote:
Originally Posted by 130FeetDeep View Post
AFRs are rock solid, so there is more than enough fuel to run that boost.

Question 1... are you on the throttle the entire way? I assume yes because pedal shows 100, but the logs are showing the throttle fluttering quite a bit.

Question 2... if you aren't coming off the throttle, then I am curious why the boost is so much less on the second run of the second log. I don't see boost target, so it is hard to say what the JB is requesting.

I don't think you are knocking for what it is worth. There are just some oddities. I am positive you could run more boost once you get the new DPs in there too. I would love to see a log running Map zero so we know what is normal with the N63R.
Base map log and graph would be great to see here. It would be most interesting to see what afrs are recorded with the factory map. The 13, 14, 14+ I see in those logs is really lean if I am reading the data correctly. We used stay in 12s but that was 15 yrs ago, maybe things have changed.

Last edited by speedyman; 09-22-2020 at 04:19 PM..
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      09-22-2020, 04:31 PM   #11
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Quote:
Originally Posted by speedyman View Post
Quote:
Originally Posted by 130FeetDeep View Post
AFRs are rock solid, so there is more than enough fuel to run that boost.

Question 1... are you on the throttle the entire way? I assume yes because pedal shows 100, but the logs are showing the throttle fluttering quite a bit.

Question 2... if you aren't coming off the throttle, then I am curious why the boost is so much less on the second run of the second log. I don't see boost target, so it is hard to say what the JB is requesting.

I don't think you are knocking for what it is worth. There are just some oddities. I am positive you could run more boost once you get the new DPs in there too. I would love to see a log running Map zero so we know what is normal with the N63R.
Base map log and graph would be great to see here. It would be most interesting to see what afrs are recorded with the factory map. The 13, 14, 14+ I see in those logs is really lean if I am reading the data correctly. We used stay in 12s but that was 15 yrs ago, maybe things have changed.
Quote:
Originally Posted by 130FeetDeep View Post
Quote:
Originally Posted by Tim2189 View Post
This?
Keep in mind the 2nd graph has 2 logs
AFRs are rock solid, so there is more than enough fuel to run that boost.

Question 1... are you on the throttle the entire way? I assume yes because pedal shows 100, but the logs are showing the throttle fluttering quite a bit.

Question 2... if you aren't coming off the throttle, then I am curious why the boost is so much less on the second run of the second log. I don't see boost target, so it is hard to say what the JB is requesting.

I don't think you are knocking for what it is worth. There are just some oddities. I am positive you could run more boost once you get the new DPs in there too. I would love to see a log running Map zero so we know what is normal with the N63R.
Quote:
Originally Posted by speedyman View Post
Quote:
Originally Posted by 130FeetDeep View Post
AFRs are rock solid, so there is more than enough fuel to run that boost.

Question 1... are you on the throttle the entire way? I assume yes because pedal shows 100, but the logs are showing the throttle fluttering quite a bit.

Question 2... if you aren't coming off the throttle, then I am curious why the boost is so much less on the second run of the second log. I don't see boost target, so it is hard to say what the JB is requesting.

I don't think you are knocking for what it is worth. There are just some oddities. I am positive you could run more boost once you get the new DPs in there too. I would love to see a log running Map zero so we know what is normal with the N63R.
Base map log and graph would be great to see here. It would be most interesting to see what afrs are recorded with the factory map. The 13, 14, 14+ I see in those logs is really lean if I am reading the data correctly. We used stay in 12s but that was 15 yrs ago, maybe things have changed.
The graph and log that has 2 runs is map 2 and map 0 hence why it's showing lower boost.
I put both logs into 1 graph so you can compare side by side

I am on the throttle 100% of the time until right before redline

In the log look under map column to see which map I was running
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      09-22-2020, 04:49 PM   #12
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Quote:
Originally Posted by Tim2189 View Post
The graph and log that has 2 runs is map 2 and map 0 hence why it's showing lower boost.
I put both logs into 1 graph so you can compare side by side

I am on the throttle 100% of the time until right before redline

In the log look under map column to see which map I was running
Ok, that makes a lot of sense there.

There is still a question as to why you are getting throttle closures. In your Map 2 run, you can see the throttle snap close just after you hit the boost target at 2800 rpm. There is also a timing drop on map 2 right around 4700 rpm. Notice the logs show the throttle dropping all the way to 69% despite the pedal input near 100%.

You vehicle will definitely be faster once you figure out why those two issues are there.

Does JB still have the ability to log KR?
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      09-22-2020, 05:01 PM   #13
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Quote:
Originally Posted by 130FeetDeep View Post
Quote:
Originally Posted by Tim2189 View Post
The graph and log that has 2 runs is map 2 and map 0 hence why it's showing lower boost.
I put both logs into 1 graph so you can compare side by side

I am on the throttle 100% of the time until right before redline

In the log look under map column to see which map I was running
Ok, that makes a lot of sense there.

There is still a question as to why you are getting throttle closures. In your Map 2 run, you can see the throttle snap close just after you hit the boost target at 2800 rpm. There is also a timing drop on map 2 right around 4700 rpm.

You vehicle will definitely be faster once you figure out why those two issues are there.

Does JB still have the ability to log KR?
Here is a pull I just did from 4th gear around 2k up to redline
Throttle seems to be dropping off around 4K rpm as well


Burger tuning replied back to my logs and said they all look good so that's weird
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      09-22-2020, 05:12 PM   #14
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That pull shows the timing retarding 2 degrees while the throttle snaps to 66%. There is a second notable timing drop at 5k rpm but not as large of a throttle closure. It is pulling 4 degrees of timing. You are not getting those timing drops on the Map 0 run, so that would personally bother me.
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      09-22-2020, 05:13 PM   #15
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Quote:
Originally Posted by 130FeetDeep View Post
That pull shows the timing retarding 2 degrees while the throttle snaps to 66%. There is a second notable timing drop at 5k rpm but not as large of a throttle closure. It is pulling 4 degrees of timing. You are not getting those timing drops on the Map 0 run, so that would personally bother me.
If you check out throttle on map 0 it also dips through out the band

I highlighted map 0
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      09-22-2020, 05:23 PM   #16
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Quote:
Originally Posted by Tim2189 View Post
If you check out throttle on map 0 it also dips through out the band
It does show that, but not timing drops. The timing drops bother me most.

I am not sure why the throttle blade is all over the place at WOT? I wish we could see a log from one of our flashed guys.
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      09-22-2020, 05:29 PM   #17
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Quote:
Originally Posted by 130FeetDeep View Post
Quote:
Originally Posted by Tim2189 View Post
If you check out throttle on map 0 it also dips through out the band
It does show that, but not timing drops. The timing drops bother me most.

I am not sure why the throttle blade is all over the place at WOT? I wish we could see a log from one of our flashed guys.
Yeah reading these logs on my iPhone is killing my eyes, I'll check it out tomorrow at work on my 27 inch iMac haha
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      09-22-2020, 06:03 PM   #18
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As per Terry, only run map 1 or 2 for now
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      09-24-2020, 05:19 PM   #19
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You need to post the CSV files so people can open them in the JB4 software, or post a datazap link which will have a CSV download option.
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      09-25-2020, 12:49 PM   #20
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Now you should get a racechip and run that along with the JB with map zero so you can log for a direct comparison. I believe Ben from RGsports is offering refund if you aren't happy with the racechip.
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      09-27-2020, 10:24 AM   #21
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Quote:
Originally Posted by Tim2189 View Post
The Butt Dyno deff feels a difference between map 0 and 2. for couple hundred bucks and 45 min install I think it is sufficient enough.
I would love to see some logs from an X5M to see what their stock boost is
Have you tried throwing a few gallons of E85 in there yet with map 1 or 2? I read a post on the N54 burger tuning forum who does this with his M550i and JB4, says it makes a huge difference.
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      09-27-2020, 10:26 AM   #22
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Quote:
Originally Posted by speedyman View Post
Quote:
Originally Posted by Tim2189 View Post
The Butt Dyno deff feels a difference between map 0 and 2. for couple hundred bucks and 45 min install I think it is sufficient enough.
I would love to see some logs from an X5M to see what their stock boost is
Have you tried throwing a few gallons of E85 in there yet with map 1 or 2? I read a post on the N54 burger tuning forum who does this with his M550i and JB4, says it makes a huge difference.
Haven't tried E85, at 22psi I'm pretty sure I'm maxed out already with the JB4, not sure.
Station that has E85 is a good distance from me so maybe later on I'll give it a go
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