DonkeyDub
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« on: October 10, 2019, 01:30:36 PM »
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2004 AWP 1.8t Jetta k03s 6Speed Unitronic Stage 2 Flash Full 3 inch exhaust W/ Cat and muff Forge Inlet & CAI filter 3rd gear logs Engine is pulling 11+ CF and audible knock is briefly heard. Pulled n75 electrically and car was still pulling 6CF under load. Issues: -Ignition timing goes negative  - The ECU is demanding 1.0 lambda under full boost/190% load- until it pulls timing or hits 4k rpm -MAP values are low compared to boost gauge. MAP values never show boost spiking close to 25psi or over 2543millibar but the Gauge will. I believe my issue is Lean AFR Hope someone can take a look at this log and give me some feed back. **During this log 4.5 degrees of ignition timing was removed via UNIsettings.** Thanks, DonkeyDub |
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nyet
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« Reply #1 on: October 10, 2019, 01:37:29 PM »
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You are asking for trouble with that boost request w/o the 5120 hack.
stick to no higher than 2450
And yes, you need a lot more fuel at or before peak torque.
If you still get zero timing at peak torque, i'd consider much lower boost between 3000-4000 rpm or run water meth, better gas, or lower compression.
GL, fighting with knock is a pita on these high compression motors.
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DonkeyDub
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« Reply #2 on: October 10, 2019, 02:25:13 PM »
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Hello Nyet,
Is 2550 boost request normal for uni stage2?
Sensor seems to cap at 2543.
WaterMeth would be ideal, ECU seems fixated on 13 AFR.
I contacted Unitronic about the ECU requesting lean AFR's and they
replied that Under Full load, Engine should be demanding .78 lambda.
Their only comment to my ECU requesting 1.0 lambda at 190% load is I should bring it
into an 1.8t/20v specialist, very supportive.
Where is peak torque, 2800 rpm?
Another AFR oddball, Sometimes while cruising at 2000rpm, low engine load 12.5%.The engine will request
.75 lambda :S
- What is a good AFR while turbo is spooling up? 12.5?
Heres another log with -8 Ignition timing,+15 Main Fuel trim and 80SEL via UNIsettings
Thanks,
DonkeyDub
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nyet
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« Reply #3 on: October 10, 2019, 02:33:54 PM »
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Is 2550 boost request normal for uni stage2?
No clue, don't care, doing adjustments on other people's tunes is asking for trouble, and having them adjust stuff for you never works out well. It is the reason I started DIY in the first place Sensor seems to cap at 2543.
Yes. Running a PID near the end of the process measurement limit is a BAD IDEA Like, terrible. Where is peak torque, 2800 rpm?
Peak torque is generally around peak load. - What is a good AFR while turbo is spooling up? 12.5?
As long as it gets to 12.5 ish by peak torque you're good. Make it too rich during spool and you may give up spool time Heres another log with -8 Ignition timing,+15 Main Fuel trim and 80SEL via UNIsettings
At this point you are going to have to start from scratch with a stock file and DIY, or find another tuner. Tweaking with UNI settings isn't going to help. The reason you are seeing weird fueling only sometimes is apparently UNItronic doesn't know the difference between BTS fueling and LAMFA fueling. |
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DonkeyDub
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« Reply #4 on: October 10, 2019, 03:02:40 PM »
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No clue, don't care, doing adjustments on other people's tunes is asking for trouble, and having them adjust stuff for you never works out well. It is the reason I started DIY in the first place Yeah I think thats the route I will be making. Silver Lining, i'll share my hind sight for others save that Flash money for a custom tune or good water/meth kit And DYO Flash. At this point you are going to have to start from scratch with a stock file and DIY, or find another tuner. Tweaking with UNI settings isn't going to help.
The reason you are seeing weird fueling only sometimes is apparently UNItronic doesn't know the difference between BTS fueling and LAMFA fueling. What are my options for getting back to square one, stock tune. Is this something I can do myself or Will I need a Uni approved shop to flash the stage2melter off my ecu. Time to hit the books! Just a wild guess is BTS related to Engine load and LAMFA part throttle/idle? |
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« Last Edit: November 14, 2019, 01:44:59 PM by DonkeyDub »
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DonkeyDub
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« Reply #5 on: October 10, 2019, 03:19:21 PM »
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The issues were there long beforehand trying this.
But I didnt get the memo about Not Full Flash Reading Unitronic files,
Attempted that the other day, It was unsuccessful and Gave DTC P0602 which comes back
after erasing. I also got one P0606 Code but I believe that one was random as it has not returned.
Thanks again,
DonkeyDub
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nyet
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« Reply #6 on: October 10, 2019, 03:38:15 PM »
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What are my options for getting back to square one, stock tune. Is this something I can do myself or Will I need a Uni approved shop to flash the stage2melter off my ecu.
Depends if there is a hardware riser on the ECU, or if UNI disabled flash write. If there is no riser you can bootmode it if normal obd flashing doesn't work. Just a wild guess is BTS related to Engine load and LAMFA part throttle/idle?
See my sig. BTS is related to modeled EGT, LAMFA is related to pedal position. |
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Blazius
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« Reply #7 on: October 10, 2019, 04:12:49 PM »
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BTS is used for fueling for longer travels and high EGT's but ofcourse you can use it all the time. LAMFA uses pedal torque request, and this is a desired value, and since desired is always ahead of actual , it is usually used for acceleration enrcichment.
negative timing on high rpm/boost is real bad, also 11 cf too, you need to get your stuff sorted man, dont do pulls like this.
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DonkeyDub
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« Reply #8 on: October 10, 2019, 04:18:35 PM »
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Flash Read didin't work, is Flash Write still possible?
Will a flash write affect IMMO?
Is Bootmode only accessed through a Galletto cable?
Wilco!
Much Appreciation
Thanks,
DonkeyDub
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nyet
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« Reply #9 on: October 10, 2019, 04:20:52 PM »
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Flash Read didin't work, is Flash Write still possible?
I doubt it. Will a flash write affect IMMO?
It should not Is Bootmode only accessed through a Galletto cable?
Yes but the galletto tool can be hexedited to allow using any ftdi cable. |
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« Last Edit: October 10, 2019, 04:38:08 PM by nyet »
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DonkeyDub
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« Reply #10 on: October 10, 2019, 04:29:23 PM »
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Hello Blazius, Ahhhh and to that, I think both BTS and LAMFA maps are awful on my vehicle. Fuel Enrichment by knock  Ignition was retarded after CF's of 11, but yes. No more boost until resolved. Thanks, DonkeyDub. |
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DonkeyDub
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« Reply #11 on: October 10, 2019, 04:42:53 PM »
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Oh wicked! nyet, Just to summarize. Lean AFR's being requested is likely the cause of knock? Because I still find it odd that Boost data does not match the mechanical gauge. It'll hit 25psi Data usually shows hitting max boost at 3200rpm, Boost Gauge looks more around 2600 Was wondering if I just have a bad MAP sensor. It'll also hit boost without requesting it :S Thanks, DonkeyDub |
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« Last Edit: October 10, 2019, 04:45:03 PM by DonkeyDub »
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nyet
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« Reply #12 on: October 10, 2019, 04:54:26 PM »
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Just to summarize. Lean AFR's being requested is likely the cause of knock?
Along with too much boost and too much timing request. Boost data does not match the mechanical gauge. It'll hit 25psi Of course not. This is why requesting boost near the process variable limit is bad. Data usually shows hitting max boost at 3200rpm, Boost Gauge looks more around 2600
Was wondering if I just have a bad MAP sensor.
I doubt it. |
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DonkeyDub
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« Reply #13 on: October 10, 2019, 05:04:24 PM »
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Cheers and thanks again
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« Last Edit: October 11, 2019, 11:00:45 AM by DonkeyDub »
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DonkeyDub
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« Reply #14 on: October 11, 2019, 03:24:24 PM »
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Alright
Vehicle is now flashed back to stock
Here is a second gear log.
Still looks lean
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