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aef
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« Reply #30 on: September 12, 2023, 01:05:17 AM »
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havent checked your file yet but maybe ldrxn is defined incorrect and dropping at the end?
or is related to improper 5120hack, maybe try without 5120.
have you tried with wastegate pressure without n75?
have you tried with maf?
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joshuafarwel
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« Reply #31 on: September 12, 2023, 09:21:16 AM »
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havent checked your file yet but maybe ldrxn is defined incorrect and dropping at the end?
or is related to improper 5120hack, maybe try without 5120.
have you tried with wastegate pressure without n75?
have you tried with maf?
my ldrxn address is 29734 and 1000rpm is 90.75 load and 6700rpm is 125.51 load stock which seems right. Every time ive restarted from stock i tried it with no 5120 hack at first and got the same result. i have a 5120 patch so its easy to just apply it after finding out its not the problem. In 1st gear i typically dont even reach wastegate pressure because the throttle closes as soon as its starting to spool over 10psi. Also every log obviously starts after a brand new flash so in 1st gear on the very first pull so i wouldnt have an overboost error since its the first time its seen boost. Ive tried it with a maf on the pressure side at one point too and got the same result iirc but i took it off because it was just jammed between a couple pipes in my charge pipe tract and it just gets drenched in oil. My cruise control even works with no maf so i dont think theres some underlying canbus error causing it. |
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joshuafarwel
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« Reply #32 on: September 13, 2023, 03:48:20 PM »
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havent checked your file yet but maybe ldrxn is defined incorrect and dropping at the end?
or is related to improper 5120hack, maybe try without 5120.
have you tried with wastegate pressure without n75?
have you tried with maf?
Ill pay somebody $300 to make me a tune that actually works |
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prj
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« Reply #33 on: September 14, 2023, 02:56:06 AM »
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You are gonna have to 5x that at least if you want someone qualified to do something on your custom shit.
I am not offering, just giving you the reality of the market.
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nyet
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« Reply #34 on: September 14, 2023, 01:33:14 PM »
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To follow up on prj's comment: this is why you don't start a project w/o a clear plan for tuning BEFORE you pick a single part.
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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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joshuafarwel
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« Reply #35 on: September 14, 2023, 04:57:29 PM »
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To follow up on prj's comment: this is why you don't start a project w/o a clear plan for tuning BEFORE you pick a single part.
The car runs great in every way aside from this problem. Im not a complete noob as ive been adjusting files for my cars for a few years, and ive tried everything thats been suggested including starting from scratch changing one thing at a time. Id rather pay for someone to figure out the issue and fix it for me so i can learn something rather than a whole tune. Im going to read the fr more and figure out what all these mi variables mean |
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joshuafarwel
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« Reply #36 on: October 18, 2023, 05:48:38 PM »
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To follow up on prj's comment: this is why you don't start a project w/o a clear plan for tuning BEFORE you pick a single part.
Someone helped me out and lent me a file that he sells just for the sake of ruling out the tune being the problem. Finally ive confirmed that the tune is not the problem. I dont have any dtc's for any sensors or wiring issues that i know of. I even snipped the canbus wires to figure out if canbus was intervening (it wasnt). I guess the next thing to try is swapping the whole harness. Anybody else ever have a wild issue like this? |
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justinvw2646
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« Reply #37 on: October 18, 2023, 06:46:29 PM »
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Key on, engine off check your boost pressure reading. Mine was reading about 75 mbar higher than it should have (1 bar) and I was getting weird throttle cuts. I changed dslofs from 329mbar/volt to 299 and haven’t had throttle cut since.
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joshuafarwel
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« Reply #38 on: October 18, 2023, 07:12:46 PM »
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Key on, engine off check your boost pressure reading. Mine was reading about 75 mbar higher than it should have (1 bar) and I was getting weird throttle cuts. I changed dslofs from 329mbar/volt to 299 and haven’t had throttle cut since.
This is actually what martin just told me to try. My dslofs is 33 and dslgrad 437 for 5120. I guess ill just set dslgrad to 330 and see what happens. If its good ill scale it back up in increments to get it close as possible before having an issue. |
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prj
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« Reply #39 on: October 19, 2023, 02:15:22 AM »
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This is actually what martin just told me to try. My dslofs is 33 and dslgrad 437 for 5120. I guess ill just set dslgrad to 330 and see what happens. If its good ill scale it back up in increments to get it close as possible before having an issue.
Yeah, let's underscale the sensor instead of fixing the tune, great idea. 31.25 and 437.50 is the correct data for the VAG 03K906051 sensor. One and a half year to fix some trivial shit... And flashing random files means absolutely nothing. Changing random shit in the tune blind instead of logging the correct thing and understanding how it works. This thread is a perfect example of what not to do and how not to tune. I hope it at least serves as a warning to others. |
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justinvw2646
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« Reply #40 on: October 19, 2023, 04:24:36 AM »
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Actually prj I did not underscale the sensor in my car. I did not and still do not have the correct sensor data for the specific VAG sensor I am using, so I used what I could find for other 3 bar sensors which resulted in intermittent limp. Soooo I changed dslofs until it resulted in 1 bar key on engine off. No underscale there.
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prj
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« Reply #41 on: October 19, 2023, 06:07:43 AM »
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Actually prj I did not underscale the sensor in my car. I did not and still do not have the correct sensor data for the specific VAG sensor I am using, so I used what I could find for other 3 bar sensors which resulted in intermittent limp. Soooo I changed dslofs until it resulted in 1 bar key on engine off. No underscale there.
Your scaling is for a 4 bar sensor, not for a 3 bar sensor. What part number sensor are you using? |
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justinvw2646
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« Reply #42 on: October 19, 2023, 08:10:58 AM »
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I will have to get a look up behind the bumper as I don’t remember at this point. I know it was a sensor from a CJAA I put a cold weather intercooler kit on.
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prj
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« Reply #43 on: October 19, 2023, 08:55:29 AM »
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Well go and look it up then, because CJAA has a 3 bar sensor IIRC.
And your scaling is for a 4 bar.
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prj
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« Reply #44 on: October 19, 2023, 09:00:09 AM »
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CJAA has 03G906051F, that's 3 bar.
For that the correct scaling is 329.4219 and -31.7578.
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