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340iMX 340iMX is offline
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Default 04-03-2020, 06:04 PM

Hereís the a log with those settings, car still feel good!
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(#52)
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JBoe JBoe is offline
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Default 04-03-2020, 07:41 PM

Needs just a little bit more...

Next Steps:

Drop Duty Bias from 45 to 40 from 1500rpm to 4500rpm and put 5000rpm to 47... leave the higher rpms as is, at 55.


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(#53)
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340iMX 340iMX is offline
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Default 04-04-2020, 12:29 PM

The road was a little bumpy when I did the log hope this log
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(#54)
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JBoe JBoe is offline
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Default 04-04-2020, 01:56 PM

DMEBT got a bit out of line here so you're boost up top wasn't holding. It looks like you may have had some wheelspin up top and this caused it? Even though you may be in Sport+, the DME will react if things spin too much. Sport+ just loosens the leash a bit.

Everything looks really good. There's one more thing we can do to see if we can add a bit more timing/power. Put 6cyl Timing to 70. That will force IAT's to gradually drop during full throttle. Our IAT's are prior to the TB and don't see the benefits of the water/meth injection. This will trick it into acting like it's happening.

Next Steps:

Set 6cyl timing to 70 and relog.


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(#55)
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340iMX 340iMX is offline
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Question 04-04-2020, 06:15 PM

Yeah Iím pretty sure it was from the road , I did two logs this time at my usual spot, did notice trims a little high?
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File Type: csv 1st 20200404_200359_runs(1).csv (5.4 KB, 71 views)
File Type: csv 2nd 20200404_200443_runs(1).csv (6.1 KB, 68 views)
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(#56)
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JBoe JBoe is offline
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Default 04-04-2020, 08:02 PM

Yeah... trims are going a bit high and there's some DMEBT drop up top again. That drop is causing some throttle closure and limiting boost up top, as seen via Boost 2. There's one more thing to try to get you consistent under target. We may need to raise ADD after this to get your boost back up, but your car/JB4 doesn't like being on target. Boost is pretty much bang on to the target line right now, so we can use FUA to drive the overall curve down.

Next Steps:

Set FUA to 10 then relog.
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(#57)
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Default 04-05-2020, 06:08 AM

Quote:
Originally Posted by JBoe
DMEBT got a bit out of line here so you're boost up top wasn't holding.
Joe, you don't think that could be from the wheelspin on a bumpy road?
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(#58)
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JBoe JBoe is offline
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Default 04-05-2020, 08:35 AM

Quote:
Originally Posted by M&M
Joe, you don't think that could be from the wheelspin on a bumpy road?
It absolutely could be. The issue is that it doesn't recover. To help reduce and/ or eliminate this, we can use the FUA reduction across the curve. This is generally only done after you get boost under control vs. target. We have done that, so we can use FUA now. It will reduce boost just under target, but keep the same curve characteristics. If it works, which it should, we can then use ADD to raise the boost levels back to where we want. The target will be higher, but we know we're in control thanks to our prior work/tuning and FUA's setting. In the end... Everything should be happy and FF will be there to auto adjust if needed. I hope this helps make sense of the path we've taken.


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(#59)
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340iMX 340iMX is offline
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Default 04-05-2020, 10:16 AM

So I wonít ever do a log on a bumpy road again , like you guys where saying boost was down a little bit
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JBoe JBoe is offline
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Default 04-05-2020, 02:25 PM

Outstanding! Now we can see that boost is tracking just below the target and never surpassing it. Boost 2 also shows that there's little deviation through the RPM range. Overall boost has dropped a bit, due to the adjustment, but that's easy to compensate for by raising the ADD back up.

Next Steps:

Raise ADD from 35 to 40. Relearn FF and relog.
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(#61)
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340iMX 340iMX is offline
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Default 04-05-2020, 05:21 PM

So I did notice that we are off from our boost target, but I was able to easily take down a Pontiac G8
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(#62)
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JBoe JBoe is offline
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Default 04-05-2020, 05:53 PM

At some point you either didn't read what FUA does or I didn't explain it well enough. With FUA at 10, you'll never have boost be on target. When using the stock DME tune, which you are, DME BT can become an issue when boost meets target. Thus, we tune to get boost on target, then use FUA 10 to drop it down across the curve. It acts similar to Duty Bias, but it's global instead of by RPM.

A part of what I've written, explained and assisted with, is not just for tuning you. It's to help expand your knowledge on "how-to" tune. Others that are reading this will likely use it for the same purpose. If you don't use it this way, then it would be your loss as you'll need this knowledge as you modify further. Going to M1 or using a BEF will change things and you'll have to retune/tweak settings to get it back into shape. In today's climate... who knows what tomorrow will bring or who would be there to assist.

On this last log, your FF has risen to 81 and is likely still learning upward. That will help narrow the gap between boost and target, but you'll always be 1.5-2psi below it. That's the FUA of 10 doing that. Your trims look fine and boost 2 shows that you are holding the same boost psi before and after the TB. Thus, it's not closing enough to affect you anymore. Timing looks great/stable. Lastly, when you review/compare your throttle closures now you'll see that they are almost gone. It's the best we've seen so far. Say, "Thank you FUA 10." LOL!

Your hitting a peak of 17psi with a low of 15+ from 3500rpm to redline. Your trims and timing tell me that you could try raising it a bit more and seeing where you end up, but you're getting close to the limit on your setup.

Next Steps:

Raise ADD to 45. Relearn and relog.
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(#63)
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JBoe JBoe is offline
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Default 04-05-2020, 05:54 PM

By the way... nice takedown and I'm happy you're happy thus far. Hopefully we'll get you a bit more before you're maxed out with your setup.


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(#64)
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340iMX 340iMX is offline
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Default 04-06-2020, 06:48 PM

Understood! And I just want to say thank you I appreciate it very much and I am very greatful for your help and everything
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(#65)
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JBoe JBoe is offline
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Default 04-06-2020, 08:12 PM

I think we're there. Everything looks stable and has some room for give should external conditions change. How's it feeling? Looks like it's giving you a good amount of additional HP/TQ.

Enjoy and best wishes moving forward... stay safe out there.
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(#66)
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JBoe JBoe is offline
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Default 04-06-2020, 08:17 PM

When you compare start to end, you can really see the difference. Good times!!
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(#67)
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340iMX 340iMX is offline
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Smile 04-07-2020, 05:48 PM

LMAO YES!!! competently different good times, good times If I am able to get my hands on some M1 I will re-post in here, Thank you again for everything, stay safe
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(#68)
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JBoe JBoe is offline
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Default 04-07-2020, 08:55 PM

Quote:
Originally Posted by 340iMX
LMAO YES!!! competently different good times, good times If I am able to get my hands on some M1 I will re-post in here, Thank you again for everything, stay safe
No worries... Enjoy and best wishes.


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(#69)
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340iMX 340iMX is offline
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Question 05-15-2020, 03:22 PM

Hi car is running strong, just thought Iíd post a few logs after about a month to check up on things, i noticed timing would drop around 2.8 or 3 for a little while, I donít think itís too bad thought Iíd ask to double check. Also I did do some coding for a Digital speedometer would that affect the tune?
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JBoe JBoe is offline
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Default 06-01-2020, 08:12 PM

Quote:
Originally Posted by 340iMX
Hi car is running strong, just thought Iíd post a few logs after about a month to check up on things, i noticed timing would drop around 2.8 or 3 for a little while, I donít think itís too bad thought Iíd ask to double check. Also I did do some coding for a Digital speedometer would that affect the tune?
I've been away for a bit... logged in to review what your log, but nothing is attached to your post??


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(#71)
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340iMX 340iMX is offline
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Default 06-06-2020, 06:13 PM

Omg lol I did totally forget here are the logs, I also did a fresh one today labeled 3rd. Car has been amazing
Attached Files
File Type: csv 1st 20200527_211419_runs(1).csv (7.3 KB, 61 views)
File Type: csv 2nd 20200527_211759_runs(1).csv (6.3 KB, 59 views)
File Type: csv 3rd P58_M7_R1_200606_1853.csv (6.3 KB, 58 views)
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(#72)
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Terry @ BMS Terry @ BMS is offline
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Default 06-07-2020, 01:20 PM

Runs look good. Prob worth updating to latest JB4 firmware, and new EWG settings (duty bias all 50, pid gain 20, shift reduction 60, FF 60 to start)


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(#73)
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340iMX 340iMX is offline
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Question 06-08-2020, 04:54 PM

Okay, is there any real difference in keeping up with the firmware? With new one car felt like didnít want to go at lower rpms, would that be throttle closure? Sorry Iím still trying to get an understanding on everything.
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(#74)
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Default 06-10-2020, 09:26 AM

Log looks solid here to me! Longer run with shifts?
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It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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340iMX 340iMX is offline
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Default 06-10-2020, 01:53 PM

Quote:
Originally Posted by Terry @ BMS
Log looks solid here to me! Longer run with shifts?
Gotcha, car when I floor it seemed like it lagged for a sec but I will get you another log. Currently itís raining pretty bad. Thank you for the response and help
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