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dream3R
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« Reply #300 on: October 16, 2013, 06:31:11 AM »
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Yes I agree!
Did you need to-do much work on the PID side of things to run 1.45? Can you hold it until 6k?
I'm assuming some work will need to be done on the torque side of things to hold the boost high up.
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fredrik_a
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« Reply #301 on: October 16, 2013, 11:38:10 AM »
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Did you need to-do much work on the PID side of things to run 1.45?
I-part needs some adjustments to cope with the fact that requested boost is elevated quite a bit. You need to allow for larger I-part adjustments basically. Other than that it's usually fine. Can you hold it until 6k? Yes.
I'm assuming some work will need to be done on the torque side of things to hold the boost high up.
Well, KFMIRL and KFMIOP needs to adjusted (as always) properly for the increased boost levels but other than that I was surprised at first how straight forward it was. |
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dream3R
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« Reply #302 on: October 16, 2013, 11:41:14 AM »
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I-part needs some adjustments to cope with the fact that requested boost is elevated quite a bit. You need to allow for larger I-part adjustments basically. Other than that it's usually fine.
Yes.
Well, KFMIRL and KFMIOP needs to adjusted (as always) properly for the increased boost levels but other than that I was surprised at first how straight forward it was.
Grand, thanks for the tips. So apart from expanding the axis/limits of iop and irl did you redo the whole thing or leave it like I've seen in all pro Volvo maps? |
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krazydbiker
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« Reply #303 on: October 16, 2013, 11:56:06 AM »
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if your going to run 1.45 bar i would recommend fixing that IAT correction map so it doesn't creep over 22, wish my turbo was fresh, she runs like 19-20-21 PSI dependant on IAT............ psi and drops off at about 5500 rpm pretty bad...... pretty happy with the power output though tuned a little on the safer side.
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astrasteve
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« Reply #304 on: October 16, 2013, 12:21:21 PM »
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After reading the thread again, i really need to start and get my head around ME7.
I have winols (full version) so had best start to id a few maps and go from there i think.
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dream3R
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« Reply #305 on: October 17, 2013, 02:57:35 AM »
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Here's my latest tune  It drops off at the top end, from my other logs (miopt_w etc) it seems that iop/irl is capping load - would that be correct? Should I be reworking the whole thing or only the high load areas? |
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fredrik_a
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« Reply #306 on: October 17, 2013, 11:25:29 AM »
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You guys having issues with holding boost at high revs... If you turn off the boost deviation monitoring function and then disattach the hose to the wastegate actuator, are you still not hitting high boost levels att higher rpm's? I'm just trying to understand if you are having HW issues or if it is something in your SW that is playing tricks on you.
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dream3R
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« Reply #307 on: October 17, 2013, 11:27:02 AM »
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Hilarious. I'll not ask you again.
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ddillenger
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« Reply #308 on: October 17, 2013, 11:33:06 AM »
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Hilarious. I'll not ask you again.
He was asking if your turbos are capable of making more boost at redline, not suggesting you drive around like that. |
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Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience!
Email/Google chat:
DDillenger84(at)gmail(dot)com
Email>PM
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dream3R
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« Reply #309 on: October 17, 2013, 11:43:18 AM »
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I see, well I have seen 1.9 bar on my boost gauge with a blown hose before at the readline, no.
I think the K24 should flow enough, don't really know though.
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fredrik_a
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« Reply #310 on: October 17, 2013, 12:26:24 PM »
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Hilarious. I'll not ask you again.
Sorry, you missed my point. I was under the impression that some guys had issues from a hardware point of view when reading this... ...wish my turbo was fresh, she runs like 19-20-21 PSI ...
...and drops off at about 5500 rpm pretty bad... This implies that there might be hardware issues with the engine type (in general?) so that was what I was trying to understand as I've never seen any restrictions like this personally. No point in modifying the software if the hardware can't cope with it and if someone (not you in this case) basically says that "my turbo is crap, it won't hold boost properly..." then I couldn't give any hints on fixing that purely with software basically. Sorry about the confusion. |
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« Last Edit: October 17, 2013, 12:29:13 PM by fredrik_a »
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krazydbiker
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« Reply #311 on: October 17, 2013, 12:38:23 PM »
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i think you took what i said the wrong way.....my turbo has had a pretty good size crack in the wastegate housing, been looking for a replacement housing due to the fact the rest of it seems to be performing perfect, but nobody seems to have a blown k24 with a non cracked housing, so i will probably be going the route of a custom turbo hopefully during this winter along with hopefully a few other things.
i thought software might have been my issue in the past but that had been ruled out, timing stays up/ throttle stays open, turbo TCV duty cycle max's out as the boost drops, after fixing wastegate preload the dropoff is not significant, just a few psi.
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fredrik_a
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« Reply #312 on: October 17, 2013, 12:40:08 PM »
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my turbo has had a pretty good size crack in the wastegate housing Yeah... Hard for me to have guessed that.  (Perhaps I missed it earlier in this thread though...) |
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krazydbiker
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« Reply #313 on: October 17, 2013, 12:42:19 PM »
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i did not realize that cracked housings in these turbos were so common, along with many other internal wastegate turbo's it is unfortunate.
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cruuz
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« Reply #314 on: October 17, 2013, 02:37:04 PM »
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there is a simple rule of thumb: If the housing is cracked and this crack influences the loss of power, than you can hear the resulting noise for sure!  |
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« Last Edit: October 17, 2013, 02:38:54 PM by cruuz »
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