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Default 07-09-2017, 12:51 PM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
I'd leave FOL as is.

Log looks pretty good but I wouldn't recommend adding any more ethanol.
Thanks for your reply Steve!
Ok so you would not worry about trims hitting 40 or even exceeding?
Or that the ign on 2cylinders were dropping behind initially after shifting?
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Default 07-09-2017, 02:00 PM

Yes, trims are pretty much maxed out, that is why I said I wouldn't recommend running more ethanol.

Not uncommon post shift. Don't think it's anything to worry about unless it consistently does it on that cylinder only.



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Default 07-09-2017, 02:02 PM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
Yes, trims are pretty much maxed out, that is why I said I wouldn't recommend running more ethanol.

Not uncommon post shift. Don't think it's anything to worry about unless it consistently does it on that cylinder only.
Great thanks!
Won't use the car untill next track day, but I have room for about 5-10l of fuel, so I will add some regular 98 before the track day to be on the safe side!
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Default 07-21-2017, 03:33 PM

Today i did some mechanical work to the car.
Once i was done i noticed that the weather had cleared and that it also was quite cold outside, so i tried to see how much boost i could run without maxing out my trims or dropping the ignition.

Attached is a new log.
About E20-E25.
In my opinion it looks good, does not max trims, the only downside is that it seems to drop ignition on cyl 3 around 3k rpm.

Would be grateful if someone from BMS could have a look and post a comment
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File Type: csv 2017-07-21 23_40_35.csv (12.0 KB, 35 views)
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Default 07-23-2017, 08:43 PM

Correct, trims look okay but some minor timing corrections.



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Default 08-06-2017, 06:22 AM

This question is not really related to logging, but i wanted to push the engine further?
Increasing boost even more i assume i would need more fuel, would just a LPFP upgrade do me any good or would i need PI to actually benefit from a LPFP upgrade?
Or are the next 2 steps for me either going Meth or LPFP + PI?

The car currently has Dec@t d0wnp1pe, larger IC, BMS intake and JB4 with EWG harness and FF.
The extra power will not be used for everyday use or track days but mostly short sprints like 1/4 mile runs.
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Default 08-06-2017, 06:30 AM

Actually i just double checked my own log.
My fp_H seems good and stable at around 17-18.
If i increase my bost the trims will go above 40, however in my last run i still have some room left on FOL.

Would it be worth trying to increase FOL to lets say 85, raising the boost and do a couple of runs to see where the trims/FOL end up?
Is it OK to run a FOL around 80-85 in the long run?
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Default 08-06-2017, 02:21 PM

Okay so i did some additional testing today since i will be attending a "drag race"-event on saturday.
Rolling starts aswell as 402.
I increased FOL to 80 and then to 85 and did these runs.
I seem to have some minor timing drops, but nothing mayor.
According to the trims there might be a bit left in it for more boost..

Any ideas?
I realize im already at the limit for FOL, but is it considerd OK to run FOL 85 for sprint runs?
I will not use these settings on trackdays or regular driving.
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File Type: csv 2017-08-06 22_15_12.csv (17.8 KB, 34 views)

Last edited by Snowman; 08-06-2017 at 02:41 PM..
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Default 08-06-2017, 05:32 PM

What are your map 6 boost targets? I'm assuming you are tapering them pretty aggressively up top?

Other than the sudden drop in the boost target, log looks pretty good.

HPFP starts to fall off up top but since you drop the boost target substantially it recovers.



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Default 08-06-2017, 05:45 PM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
What are your map 6 boost targets? I'm assuming you are tapering them pretty aggressively up top?

Other than the sudden drop in the boost target, log looks pretty good.

HPFP starts to fall off up top but since you drop the boost target substantially it recovers.
Great thanks!

Is it OK to run FOL at 80-85?
What are the risks of running the FOL high, that i have to keep an eye on the HPFP?
Can it actually damage the HPFP if i run high FOL for short durations?
As i mentioned earlier this is a max boost map that i want to use if a go to a dragstrip.
See boost targets in the image below
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Default 08-07-2017, 10:51 AM

FOL is fine if it doesn't cause any codes or drive train malfunctions. If it does, lower it to 70.

Map 6 looks like it did in the logs...just wanted to verify that you decayed your boost values that much.



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Default 08-07-2017, 03:20 PM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
FOL is fine if it doesn't cause any codes or drive train malfunctions. If it does, lower it to 70.

Map 6 looks like it did in the logs...just wanted to verify that you decayed your boost values that much.
Thanks Steve!
One small step at a time for me, understanding the whole system

Regarding Map 5, would i need to reset all the adaptions before changing to map 5?
Ive done some pulls now and im stuck at 14-14,5PSI on map 5, where i can go quite alot farther ive i use a custom Map 6.
Why is that?
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Default 08-08-2017, 08:07 AM

Map 5 will adapt based on conditions, so if you have high IAT's, timing corrections, ect. the boost target will learn down.

On map 6, it's a fixed boost map, so it will target whatever you set the the boost targets to.



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Default 08-08-2017, 08:09 AM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
Map 5 will adapt based on conditions, so if you have high IAT's, timing corrections, ect. the boost target will learn down.

On map 6, it's a fixed boost map, so it will target whatever you set the the boost targets to.
So no need to reset the values before choosing map 5?

I'm aware what map 6 is, but i find it strange that map 5 is so far away from what the logs are saying about my map 6..
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Default 08-10-2017, 07:41 AM

Yesterday i experienced my first "Drive train malfunction" during a longer pull.
At first i was sure that it was the HPFP that dropped to low, but now after reviewing the logs i dont really know what happend..
This was a pull from 3-5th gear and happend around 5200-5300rpm on 5th gear.

The error code was 11A002 Fuel pressure below target.

However according to the JB4 the fp_h was sitting at 16, trims at 26.
Nothing strange at all..
I'm aware that i was running the FOL near the limit of the HPFP, but if it was the HPFP that sent the code, why did it not show on the fp_h?
I had about 1/2 tank, could it be that the pump sucked air?
Any ideas or advice would be greatly appreciated so that i could learn from this!
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File Type: csv 2017-08-09 18_34_46.csv (7.3 KB, 30 views)
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Default 08-10-2017, 08:20 AM

Try lowering your FOL to 70.



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Default 08-10-2017, 08:23 AM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
Try lowering your FOL to 70.
Yes i have already lowered my FOL.
But could it be the HPFP even though the fp_h did not dip down before it threw the code?
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Default 08-12-2017, 08:05 AM

Okay here is another log.
Car is running just fine, however im having problems with the occasional error code that seems to be triggerd by long pulls, WOT 2-6th gear 50-250km/h.
Trims looks to be fine, no mayor problems with the timing and the HPFP seems to be happy with the fp_h sitting at 15 around where it happends.
FOL was set to 72 during this pull.

It seems like something is happening at around 5800rpm, after going WOT from 2nd gear to 6th.
Any help would be appreciated on WHY this is happening so i can understand this and fix the problem.
It occured once after maybe 10-15pulls, then i lowered FOL to 70 and did another 5-10pulls without any new codes.
The codes it threw was 11A002 and also the MAF error code, im currently running stock airbox.
After removing the codes both dissapears and the car runs great again.
Attached Files
File Type: csv 2017-08-12 13_17_07.csv (12.1 KB, 60 views)

Last edited by Snowman; 08-12-2017 at 08:12 AM..
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Default 08-12-2017, 04:31 PM

CSV is corrupted.



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Default 08-12-2017, 10:08 PM

Oh OK
Let's try again then!

Edit: Strange that you could not open the previous one.
I tried to download it again and i could open.. Hope you can open this one.
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File Type: csv 2017-08-12 13_17_07.csv (12.1 KB, 41 views)

Last edited by Snowman; 08-13-2017 at 01:56 AM..
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Default 08-14-2017, 10:17 AM

HPFP is crashing. You can try lowering FOL as it's currently set at 72. Ultimately that appears to be your issue. Keep an eye on your trims when lowering FOL to make sure they don't max out.



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Default 08-14-2017, 01:03 PM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
HPFP is crashing. You can try lowering FOL as it's currently set at 72. Ultimately that appears to be your issue. Keep an eye on your trims when lowering FOL to make sure they don't max out.
Thanks!
How come I do not see the fp_h falling before the sudden crash?
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Default 08-15-2017, 11:45 AM

Because its a DME thing rather than a flow thing. It's reading the rail pressures and doesn't like what it's seeing so it turns it off and puts you in limp mode.



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Default 08-15-2017, 11:51 AM

Quote:
Originally Posted by Steve @ BMS/Fuel-It!
Because its a DME thing rather than a flow thing. It's reading the rail pressures and doesn't like what it's seeing so it turns it off and puts you in limp mode.
Oh okay, thats actually really interesting!
So this is really a software problem more than a hardware problem..

As of today, are there any bypass of this issue or am I better of waiting for a bef that might help?
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Default 09-04-2017, 10:56 AM

Steve/Terry or anyone.
Would i gain ANYTHING from just getting a LPFP upgrade?
Would that fix the "code" that i was seeing earlier?
Or allow me to run higher boost and/or more ethanol?
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