Why is my act load > reg after 5000rpm?

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smurfbus

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	Why is my act load > reg after 5000rpm? « on: August 24, 2012, 11:38:11 AM »

RS4 engine with K04/K24 buehnbombs (Troys yber'brids for those who know the story), E85, 1000cc injectors, Tonys base M-box file now with super high MIRL (no help) LDRXN stayed at 240. Boost was 1.65peak taper to 1.3. Interpolated MIOP and all the usefull stuff I've picked on the forum ARMD,NWS-smoothing...

I'm running AVCR parallel but it's maxed for now so should be pretty much blocked.

I'm out of ideas of what to try next. Is it knock voltage related? Copied KFKE's from K-box, no help (next revision has 10% on KFKEs)

Oscillation over 5000rpms usually much worse than on this pic, up to 7degree jumps. IAT under 90F, EGT in control although B1 is 1110C so It's running on BTS map until I get my spare but I'm Ok with that.

timing=basar_0
mifa=misol

Surely I forgot some important bits but ask and I'll try to answer.

Here's a pic of cyl 6knock, act load, req load, timing=basar0, retard cyl6
Other pic of related maps


« Last Edit: August 24, 2012, 11:54:23 AM by smurfbus »	Logged

nyet

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	Re: Why is my act load > reg after 5000rpm? « Reply #1 on: August 24, 2012, 12:40:26 PM »

A crazy MIRL will really screw up the IOP situation as well. You might want to revisit your IOP.

If your req load goes under actual, you're gonna have intervention regardless of knock or anything else.

You may end up underscaling your MAF to keep act. load reasonable :/

Or you can play selective scaling games like prj did here
http://nefariousmotorsports.com/forum/index.php?topic=2444.msg23124#msg23124

In any case, you will have to post more logs showing all the various torque intervention variables if you want to get to the real cause.


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nyet

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	Re: Why is my act load > reg after 5000rpm? « Reply #2 on: August 24, 2012, 12:50:05 PM »

Actually, i take it back.

Your actual load is NOT over requested.

Requested is "load corrected specified" which you did not post.


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smurfbus

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	Re: Why is my act load > reg after 5000rpm? « Reply #3 on: August 24, 2012, 10:08:37 PM »

If "load corrected specified" is the same as ENGINE LOAD CORRECTED then they are the same on that log. LOG-file attached.

I used the Berttos interpolator for the IOP and when the MIRL was lower at 238 I also tried to mod the IOP based on logs (where loads cross and up) but it made no difference?

I've always had pretty (MRC C-box for gasoline) high MIRL so I can dial the boost with my AVC-R and if possible I'd like to keep that. So it should work with cracy MIRL too if I just figured whats pulling the timing.

I'm back to RS4 airbox so I should get accuratish maf values (rs4 maf and maps) but is it possible it's already restricting the flow at 400g/s?


« Last Edit: August 25, 2012, 03:53:15 AM by smurfbus »	Logged

smurfbus

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	Re: Why is my act load > reg after 5000rpm? « Reply #4 on: August 25, 2012, 04:57:58 AM »

I checked an older log when MIRL/IOP were Tonys base maps and back then act was 190 and crossed the requested late at 6200rpms. I still boosted about the same 1.65 and FATS was the same as it's now. So, maybe I'll just have to lower my MIRL to make the Load monitor happy and just boost away with my AVCR?

Is there a way to raise the "load corrected specified"? I must have some corrections going on the background that I can't spot.


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nyet

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	Re: Why is my act load > reg after 5000rpm? « Reply #5 on: August 25, 2012, 09:15:12 AM »

IRL/IOP are torque monitoring, not load monitoring. You didn't actually graph any of the important torque variables to see if torque monitoring is active.

However, your actual load is still above your requested load, which generally indicates that your MAF still isn't scaled right.


« Last Edit: August 25, 2012, 09:18:05 AM by nyet »	Logged

nyet

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	Re: Why is my act load > reg after 5000rpm? « Reply #6 on: August 25, 2012, 09:26:05 AM »

miist is over misol, but I'm not seeing any real torque intervention.


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smurfbus

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	Re: Why is my act load > reg after 5000rpm? « Reply #7 on: August 26, 2012, 06:57:02 AM »

It's a RS4 engine with RS4 intake component and I used rs4 maps for maf so it should be pretty close? I could try my X-1 intake so see how it reacts?


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prj

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	Re: Why is my act load > reg after 5000rpm? « Reply #8 on: August 26, 2012, 09:40:32 AM »

Post plsol vs actual vs wgdc.

Edit: nvm will get your log, but please zip it next time!


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nyet

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	Re: Why is my act load > reg after 5000rpm? « Reply #9 on: August 26, 2012, 10:39:37 AM »

Throw away the AVCR, its useless. You already have an amazingly flexibly PID at your fingertips.


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matchew

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	Re: Why is my act load > reg after 5000rpm? « Reply #10 on: August 26, 2012, 10:43:21 AM »

Quote from: nyet on August 26, 2012, 10:39:37 AM

Throw away the AVCR, its useless. You already have an amazingly flexibly PID at your fingertips.

At least sell it.

Disconnect anything controlling boost other than your ECU and run log..


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smurfbus

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	Re: Why is my act load > reg after 5000rpm? « Reply #11 on: August 27, 2012, 09:37:27 AM »

AVC-R disconnected. No change in load or boost as I presumed.


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nyet

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	Re: Why is my act load > reg after 5000rpm? « Reply #12 on: August 27, 2012, 10:00:33 AM »

Looks fine to me. I dunno what your req boost looks like, but I see nothing obviously wrong in that.


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smurfbus

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	Re: Why is my act load > reg after 5000rpm? « Reply #13 on: August 27, 2012, 10:28:05 AM »

req boost is pretty much actual over 5000rpm.

My LDRNX is 240 and the boost tapers, so do you think I'm at the limit of VE now or could I get more boost up top if I still raised the LDRXN. IIRC I've had over 200 act load at 7000 before I switched to M-box.

edit: found one example


« Last Edit: August 27, 2012, 10:29:58 AM by smurfbus »	Logged

phila_dot

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	Re: Why is my act load > reg after 5000rpm? « Reply #14 on: August 27, 2012, 11:55:58 AM »

I would guess MAF scaling.

What's up with your WGDC?


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