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nyet
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« Reply #150 on: August 26, 2011, 09:01:46 AM »
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No, you are thinking along the wrong lines.
there is something very wrong with your wastegates. Log wgdc.
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NOTORIOUS VR
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« Reply #151 on: August 26, 2011, 09:09:39 AM »
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No, you are thinking along the wrong lines.
there is something very wrong with your wastegates. Log wgdc.
WGDC is included in the logs. why do you think there is something wrong with the gates? |
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nyet
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« Reply #152 on: August 26, 2011, 09:18:57 AM »
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Look at your requested boost. Look at your actual boost. Now look at your WGDCs... you really expect that much boost at 30%? Please go back and study PIDs  |
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« Last Edit: August 26, 2011, 09:21:07 AM by nyet »
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NOTORIOUS VR
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« Reply #153 on: August 26, 2011, 09:36:25 AM »
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Look at your requested boost. Look at your actual boost. Now look at your WGDCs... you really expect that much boost at 30%? Please go back and study PIDs Considering I see 22-23psi with 0% WGDC, it's not really out of the question yes. my gates are set to crack @ 18.5psi FWIW as per TiAL recommendations |
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nyet
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« Reply #154 on: August 26, 2011, 09:40:14 AM »
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Yikes. I didn't realize wg cracking was so high.
You will have to make sure your requested boost stays above WG cracking pressure.
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NOTORIOUS VR
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« Reply #155 on: August 26, 2011, 10:11:14 AM »
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Yikes. I didn't realize wg cracking was so high.
You will have to make sure your requested boost stays above WG cracking pressure.
Makes perfect sense... I'll look into it and go back a few steps |
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NOTORIOUS VR
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« Reply #156 on: August 28, 2011, 08:36:49 PM »
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Well I scrapped my file of underscaling the MAF... the car just wasn't reacting right to it... especially the req. boost... I have no idea why it was requesting what it was.. but I decided to go back to a very old (and safe) file with minimal WGDC and wow, the car drives so smooth again... Also my phantom misfires are gone too from what I can tell... and I'm almost 100% sure now that the "misfires" were actually the timing oscillations. Not sure what I'm going to do now... with this file everything seems to work really well except for the richness @ 21-23 in hg and the warm start issue... But I think if I do some slight MAF scaling down low and play with the TVUB settings I can work that out and I should have a solid base file that I hope I don't have to touch anymore for a while  |
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judeisnotobscure
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« Reply #157 on: August 29, 2011, 05:37:48 AM »
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try messing with kfkhfm at the 2 lowest rpm rows and lower the numbers to lean it out a little. I've had good luck fixing idle issues this way.
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I have a b5 s4
but i just want to dance.
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NOTORIOUS VR
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« Reply #158 on: August 29, 2011, 05:47:39 AM »
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Idle is fine though (even the trims)... it's only on just before over-run that it goes pig rich (11.0)... I'm good up until 21 in hg. after that it just dumps fuel (inj pw. doesn't go below 1.70ms.. and I noticed once I scaled my MAF I was able to hit 1.38ms)
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judeisnotobscure
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« Reply #159 on: August 29, 2011, 06:33:24 AM »
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If that's the case, how do you scale your mlhfm... I normally multiply the whole table by my correction factor and then start the first value back around stock and do a rough smooth over the first 20-30 or so values.
have you ever compared the bosch rs4 vs. s4 bosch maf scaling... the rs4 values start lower than the s4.
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I have a b5 s4
but i just want to dance.
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NOTORIOUS VR
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« Reply #160 on: August 29, 2011, 07:27:11 AM »
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Honestly, I just selected the entire table and divided by 10% each time last time (did it twice until I ended up @ 20% underscaled from the original values).
This time I'm not sure how I will do it...
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judeisnotobscure
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« Reply #161 on: August 29, 2011, 07:35:48 AM »
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this time take a stock hitatchi table and multiply it by 1.1644 then smooth the low end like I said and see how it works for u.
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I have a b5 s4
but i just want to dance.
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NOTORIOUS VR
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« Reply #162 on: August 29, 2011, 07:59:54 AM »
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I'll try that and post up how it works out... thanks!
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nyet
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« Reply #163 on: August 29, 2011, 02:59:44 PM »
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Also, if you see timing oscillations, PLEASE post logs! In particular, see if you can log more of the things in the MD and ZUE path... miist, misol, zwbas, zwist, zwopt etc. etc. etc.
I really want to solve that issue once and for all.
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NOTORIOUS VR
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« Reply #164 on: August 29, 2011, 03:34:32 PM »
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I have normal ECUx logs that I can post up that show the oscillations... but that's it...
I ain't putting that whack program back in my car. I can however send you the program that goes with the logs if you like.
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