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BMW M5 F90 (2018+) General Forums Engine, Exhaust, Drivetrain, Tuning Modifications    Jb4 0-60 times and custom map

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      02-13-2020, 09:13 PM   #89
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Quote:
Originally Posted by JBA87 View Post
I'll try the better gas (in fact is intended to this weekend). But I ask you this: Do you think the Map 1 JB4 should not be able to put down a 2.8 sec on pump? I would have thought that that would have been pretty easy. So I was just taken aback by the fact that it's been so challenging to do thatZ

Also, Isn't the HCP time on dragy on Costco 93 or is that just BS.
2.8 as shown above on pump is doable. I went 2.8’s and 2.9’s on pump 93 at 3600 DA. Both RaceChip and JB4 on Map1. Pure stock was 3.1

Non Comp 2018

You will get there. For your goals I would remove JB4 and sell it. A decent pump gas tune will hit your goals of set it and forget it with a 2.8 - 2.9
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      02-13-2020, 09:15 PM   #90
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Quote:
Originally Posted by JBA87 View Post
I'll try the better gas (in fact is intended to this weekend). But I ask you this: Do you think the Map 1 JB4 should not be able to put down a 2.8 sec on pump? I would have thought that that would have been pretty easy. So I was just taken aback by the fact that it's been so challenging to do thatZ

Also, Isn't the HCP time on dragy on Costco 93 or is that just BS.
2.8 or maybe even a 2.7 should be possible on pump, but it would be hard to do regularly like you want, I think. When you're taking off that hard, everything has to be perfect. My 0-60 fluctuate a lot depending on the road and tire temperature. You're already at a 2.9 on a good run, you're not going to feel a difference between that and a 2.8. The time you posted already was a 2.7 with a 1ft rollout as magazines report it, that should be enough to brag to friends if that's what you want.
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      02-13-2020, 09:18 PM   #91
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Hockeye

Thanks

Your times are a good example of my
Frustration.

Here are my logs:


Stock 3.20 DA 1077 (did right after or shortly after break in seduce and this time was hard to get. It was best of maybe 10 attempts over a few days)

stock 3.24 DA -397 (negative 397) - I show this one because it was the next best time on a very cold day with very low DA in So Fla

JB4 Map 1 - 3.05 DA 1805
I did this pretty consistently but again this waste best with most times above this but typically less than 3.2

JB4 Map 2 - 2.94 DA 790
Again this was best after many attempts in the low 3s
This map was very inconsistent. Some where horrible north of 3.5

Everything else has been worse (sometimes much worse) probably have done 20+ LCs trying to consistently get under 3

Admittedly, I did one 2.90 sec on map 1 but it was invalid due to a negative 2.90% slope - DA 1454
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      02-13-2020, 09:41 PM   #92
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Quote:
Originally Posted by JBA87 View Post
Hockeye

Thanks

Your times are a good example of my
Frustration.

Here are my logs:


Stock 3.20 DA 1077 (did right after or shortly after break in seduce and this time was hard to get. It was best of maybe 10 attempts over a few days)

stock 3.24 DA -397 (negative 397) - I show this one because it was the next best time on a very cold day with very low DA in So Fla

JB4 Map 1 - 3.05 DA 1805
I did this pretty consistently but again this waste best with most times above this but typically less than 3.2

JB4 Map 2 - 2.94 DA 790
Again this was best after many attempts in the low 3s
This map was very inconsistent. Some where horrible north of 3.5

Everything else has been worse (sometimes much worse) probably have done 20+ LCs trying to consistently get under 3

Admittedly, I did one 2.90 sec on map 1 but it was invalid due to a negative 2.90% slope - DA 1454
It's hard to compare your times to Hockeytyme because he had an intake, exhaust and downpipes. He also has MPS4S tires, not sure if they were on for those runs. And his car is kind of a freak.

Your stock times do seem slow though. I was able to get a 2.90 in my non comp and an 8.01 60-130 stock. Just about every launch I was at 3.00. I feel like some are just faster than others, not sure why. If you don't have Michelin Pilot Sport 4S tires they could help at least with the consistency. Other than that all I can think of is either you're not launching it right somehow or it's a dud. There have been a few people on here with the same issue, not sure if any of them ever figured it out or if they all just gave up.
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      02-13-2020, 09:45 PM   #93
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I have the Michelin's

I think it's a dud :/
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      02-13-2020, 09:49 PM   #94
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But again this is why I'm so discouraged

I know we are are talking about 1 or 2 tenths here and there (and whether 3.1 or 2.8 the car is fast ... but it does seem slow ... I wish one of you could drive it and see what I'm talking about .. I mean maybe it's the humidity in Florida .. I dunno
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      02-13-2020, 10:32 PM   #95
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Did you read my post above, 0-60mph is a total crap shoot? Stock cars can run faster than tuned cars 0-60 because it's all about traction and how well launch mode decides to work that moment.

You are on the right path looking at 60-130 that is a much better measure to evaluate tuning performance.
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      02-14-2020, 05:04 PM   #96
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DME log
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      02-14-2020, 05:14 PM   #97
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Throw up the CSV file also so I can check other parameters you're not adding to your photos.
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      02-14-2020, 05:14 PM   #98
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Looks good! Boost is smooth and in a safe range for 93 octane. Timing is much better. Still could go higher, but even these tunes take a week or so to adapt.
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      02-14-2020, 06:53 PM   #99
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I'm on my phone .. what's your email

Don't know heir to upload the csv s from the iPhone
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      02-14-2020, 06:54 PM   #100
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Here is one more

Custom Map 3 w DME courtesy of Mo

It's running strong.. I can feel it with my very precise butt log : P
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      02-14-2020, 07:19 PM   #101
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Quote:
Originally Posted by JBA87 View Post
I'm on my phone .. what's your email

Don't know heir to upload the csv s from the iPhone
You can add it to datazap and post the link here also.
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      02-15-2020, 06:04 AM   #102
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I will try to upload a little latter

Here is a log of the most recent custom Jb4 Map 3 / DME Combo

Also, a dragy 60-130 (technically invalid because of < 1% slope) .. 7.89 for this same run .. I think it could be a little faster?. This is all on 93 pump. No other mods. I have cf roof and the standard breaks, FYI
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      02-15-2020, 06:25 AM   #103
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Let me know if this link works:

https://datazap.me/u/jbam5/log-15817...log=0&data=1-4
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      02-15-2020, 10:35 AM   #104
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The logs are much better and the 60-130 time shows that. But it's still looking slow. 60-130 stock on a comp if I remember right is about 7.8-8.0, with a valid slope.
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      02-15-2020, 10:55 AM   #105
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Quote:
Originally Posted by JBA87 View Post
Yes I can open that. Since you have a good 60-130 baseline now it might be worth comparing map1 and map2 which are additive maps, to map3 which is that absolute boost target map. I also see on map3 FF is learning up which should get boost closer to target over time.
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      02-15-2020, 11:09 AM   #106
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I agree. Still looks / feels a little slow

It was a first run less than 24 hours after flashing

I'm going to give the car some time to adapt to the new mapping

Might change FF to 40 from 30 on customs map 3 after a few days to see whether that helps too (per Mo)

Also I bought 5 gallon of 100 octane so I'll mix some of that in a few days after car adapts today the tuning
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      02-15-2020, 11:10 AM   #107
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Mo modified some of the universal map 3 settings so if I tested map 1 or 2 I'd probably have to play with those again , no?
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      02-15-2020, 11:13 AM   #108
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Quote:
Originally Posted by gpdriver17 View Post
The logs are much better and the 60-130 time shows that. But it's still looking slow. 60-130 stock on a comp if I remember right is about 7.8-8.0, with a valid slope.
I think it's more like 8.3 or 8.5 on pump Gas


Could also humidity here in Florida ... it was 80% yesterday

I wish there was a good way to dilute the humidity with a modification
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      02-15-2020, 11:18 AM   #109
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Quote:
Originally Posted by JBA87 View Post
Mo modified some of the universal map 3 settings so if I tested map 1 or 2 I'd probably have to play with those again , no?
No you'd leave all the settings the same. Map1 and map2 are largely independent of the settings entered. Just something to try since you're recording runs anyway.
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      02-15-2020, 11:19 AM   #110
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Quote:
Originally Posted by Fuel-It! View Post
Quote:
Originally Posted by JBA87 View Post
Yes I can open that. Since you have a good 60-130 baseline now it might be worth comparing map1 and map2 which are additive maps, to map3 which is that absolute boost target map. I also see on map3 FF is learning up which should get boost closer to target over time.
I could be wrong but I believe me boos is below target on map 3 because we set user adjustment settings for FF to 30 and default wastegate to 20 so it's operating below the target on map 3
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