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nyet
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« Reply #15 on: July 22, 2015, 06:06:37 PM »
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I meant normal as in that's what it boosts to when the WG line is connected.
It didn't build boost like I expected at all. It spiked at 18 and then tapered to about 14. So, no it didn't hold to redline.
Does this mean the waste gate actuator is bad?
Maybe. Maybe not. But something is definitely bad. Waiting for the laptop to charge and I'll do a log of MB 111.
I'm guessing you'll see when they max youll throw P0234... |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! 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 ex
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fR3ZNO
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« Reply #16 on: July 22, 2015, 06:44:07 PM »
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I just got back from logging. It went into limp mode during one of the runs. It wasn't WOT. I'll post the files in a few minutes.
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« Last Edit: July 22, 2015, 06:48:32 PM by fR3ZNO »
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fR3ZNO
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« Reply #17 on: July 22, 2015, 06:53:30 PM »
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Here's the files. Run #3 was when it went into limp mode.
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nyet
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« Reply #18 on: July 22, 2015, 07:07:32 PM »
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wg is maxed, plus any time you see those PID trims above 7 or 8 you are done.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! 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 ex
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fR3ZNO
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« Reply #19 on: July 22, 2015, 07:28:20 PM »
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What can we deduce from the 111 values? N75 duty cycle is maxed, so it's working overtime to meet requested boost, correct?
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nyet
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« Reply #20 on: July 22, 2015, 07:35:03 PM »
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What can we deduce from the 111 values? N75 duty cycle is maxed, so it's working overtime to meet requested boost, correct?
Yes. Not good. |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! 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 ex
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vwaudiguy
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« Reply #21 on: July 22, 2015, 11:04:28 PM »
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Some things you might want to check
Intake/exhaust restriction
Boost leaks
Properly sealing internal disc of the wastegate. Could be missing altogether, could have mis-adjustment of the rod.
You definitely should boost higher than you are with the wastegate disconnected. That, or the turbo is on it's way out.
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"If you have a chinese turbo, that you are worried is going to blow up when you floor it, then LOL."
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fR3ZNO
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« Reply #22 on: July 23, 2015, 05:34:29 AM »
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Some things you might want to check
Intake/exhaust restriction
Boost leaks
Properly sealing internal disc of the wastegate. Could be missing altogether, could have mis-adjustment of the rod.
You definitely should boost higher than you are with the wastegate disconnected. That, or the turbo is on it's way out.
I have a test pipe coming in to see if the cat is clogged. While I'm installing the test pipe, I can check the sealing of the disc for the wastegate. I'll test for boost leaks again. It's been a month or two since I last tested for boost leaks. |
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fR3ZNO
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« Reply #23 on: September 06, 2015, 08:11:57 AM »
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Hey everybody, it's been awhile since I updated this, but I installed the test pipe. Still need to do some logs to see if there is any improvement, but in the driving that I've done around town, it has gone into limp mode once or twice under similar conditions as last time.
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nyet
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« Reply #24 on: September 06, 2015, 09:35:18 AM »
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Not surprising. 95% dc and the boost you're seeing is bad news.
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! 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 ex
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fR3ZNO
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« Reply #25 on: October 20, 2015, 09:05:22 AM »
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I just wanted to say thanks to everyone who has been helping me with this issue. Did some more logs with the test pipe and it's the same story as before.
So, now I'm on the hunt for either a low mile KO3 or KO4 since I already have the TT225 injectors.
I guess it's not too surprising that the original turbo is starting to have troubles, the APR tune was put on when the car was only a year or two old by the PO. Asking the turbo to boost to 18-20 psi for 130k miles compared to the stock 8psi is asking a lot I guess.
Would you guys think a KO3 with similar miles as mine that was only used with a stock tune be okay or would it have the underboost problem?
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adam-
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« Reply #26 on: October 21, 2015, 01:20:23 AM »
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Just look for a solid, clean looking turbo with very little play in the shaft. Some slight side-to-side play is acceptable, and I mean slight. No in and out.
As long as its clean looking, it should be healthy. Remember if you go K04 you need manifold, some lines, new TIP, etc.
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fR3ZNO
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« Reply #27 on: October 21, 2015, 04:42:44 AM »
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Just look for a solid, clean looking turbo with very little play in the shaft. Some slight side-to-side play is acceptable, and I mean slight. No in and out.
As long as its clean looking, it should be healthy. Remember if you go K04 you need manifold, some lines, new TIP, etc.
Yeah, I ended up going with a KO3. A KO4 wouldn't really be worth the small 10 HP 15TQ difference over the current APR tune I have. Even though I already have the TT225 injectors, I would still need the turbo and software which would be anywhere from 500-700 depending on what deals I could get. I got a good deal on a used KO3 from a fellow member on Audizine. No shaft play and never tuned. So hopefully that will fix my problem. |
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fR3ZNO
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« Reply #28 on: December 26, 2015, 08:39:35 PM »
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Okay, another update. Now that I'm done with finals, I decided to tear into the car and swap in the turbo. With my old turbo on the bench I inspected it to see what the issue was. It has very little side to side play and no in and out. After looking it over I believe I found the issue:   Two fairly large crack in the waste gate where the flapper seals. I would imagine this would affect the sealing of the waste gate and cause the N75 duty cycle to max out trying to keep this closed (to no avail)? Looking at the new used turbo, it seems to have slightly more side to side play and still no in and out. However, where the flapper seals it looks much better. I forgot to take pictures of that. Would it be safe to say I have found my problem and should go ahead and install the newer turbo? |
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« Last Edit: December 26, 2015, 08:45:11 PM by fR3ZNO »
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jimmcgee5
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« Reply #29 on: December 27, 2015, 07:15:19 AM »
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take the housing off the new one and put it on the old one , bobs your uncle !  |
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