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Old 06-12-2007, 07:51 PM   #1
bren wrx
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'10 E92 M3 M-DCT
brentuning.com/blog

Default 05 LGT OSECU strange boost problem - help

Im having a strange issue with this LGT with a boost problem

initial WG set at 80-90% through most of the power range on A and B maps, max set at 90%.....target at 17 psi throughout the whole range with a taper

during 3rd gear roll ons i get a dead lull of 30.2% making 10 psi from 2800-4200 or so then slowly ramps up to what it should be in that range (80%)

it doesn tseem to happen in 1st or 2nd (as they go by too fast), What is the issue?

WG (psi)
90.2 -3.05
85.1 1.74
60 2.9
40 4.06
30.2 5.37
30.2 6.67
30.2 7.84
30.2 8.85
30.2 9.72
30.2 10.16
30.2 10.45
30.2 10.59
30.2 10.74
30.2 10.74
30.2 11.03
30.2 11.03
30.2 11.03
30.2 11.03
30.2 11.03
30.2 11.03

(rpm) WG (psi)
2039 0 -7.69
2066 60 -7.69
2056 90.2 0.15
2157 74.9 1.31
2236 54.9 2.9
2319 30.2 4.64
2371 30.2 6.67
2532 30.2 8.71
2668 30.2 10.01
2777 30.2 10.45
2916 30.2 10.59
3071 30.2 10.59
3186 30.2 10.59
3274 30.2 10.88
3508 32.94 11.03
3646 36.86 11.46
3671 41.18 11.9
3877 45.1 12.19
4014 50.2 12.77
4207 54.12 13.2
4335 58.04 13.49
4430 61.96 14.07
4598 67.06 14.36
4783 70.98 14.51
4913 74.9 14.51
5009 79.22 14.51
5122 81.18 14.36
5300 81.18 14.07
5493 81.18 13.78
5612 81.18 13.35
5674 81.18 12.91
5795 81.18 12.62
5946 81.57 12.19
6030 81.57 12.04
6194 81.57 11.75
6284 81.96 11.61
6345 81.96 11.46
6488 81.96 11.46



Im stumped.....ideas?
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Old 06-12-2007, 08:02 PM   #2
Tea cups
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That's Subaru's attempt to fix "surge on moderate acceleration". Retarded if you ask me. You can use one of the older roms (511N, 510N) which do not have this logic.
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Old 06-12-2007, 08:04 PM   #3
bren wrx
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Default

where can i find these roms, appreciate the help greatly - i knew it wasnt me
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Old 06-12-2007, 08:23 PM   #4
bren wrx
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pulled a stock rom, copied over the tables....should be good to go. will report back
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Old 06-14-2007, 11:18 AM   #5
bren wrx
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yup that was teh problem thanks again.
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Old 06-14-2007, 01:09 PM   #6
Tea cups
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I also have a hack for the 521N, 522N to eliminate the wg issue. I think some have upgraded to the later roms to eliminate a cruise control problem. You can PM your rom to me (merchgod) on the Enginuity site if you would rather use the later rom revision.
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Old 06-16-2007, 10:34 AM   #7
bren wrx
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is that the CC problem that throws er HC above 90?
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Old 06-16-2007, 11:32 AM   #8
Tea cups
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Quote:
Originally Posted by bren wrx View Post
is that the CC problem that throws er HC above 90?
Not sure if it does that, but Subaru describes it as, "Cruise control intermittently shuts off."
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