NefMoto

Not really sure where to post this where anyone will pay attention to it.

I’m looking to meet up with anyone will to give some advice about a set of issues that i have been completely unable to solve going on one full year.

Anyone here located in the New England/upstate NY area or can recommend a reputable tuner WILLING TO WORK WITH ME. Not looking for someone to tune my car, take my money and tell me to pound sand.

Will pay for their time.

nobody can help without insight of the issue....

Hey sorry,
I’m dealing with some idle oscillation that will begin to hunt, then straighten out, then begin again at irregular intervals. Load, AFR, lambda corrections and rpm oscillate in time and ign timing oscillates inversely. Ign timing is also all over the place, 9 - 20 deg range-Ish.
I’m going to be pressure and vacuum testing lines (for the 3rd time), just did a TB adaptation, have to diagnose my crank pos sensor to make sure thats good.

Idle is 760 still (1.9 overbored 2860rs) going to make sure ign maps are similar/the same in idle areas. I’ve raised KFMRES/K which made the car easier to operate so i kept it, it didnt get rid of my issue. I 100’ed DARO (ARMD) to just see what kind of influence that torque intervention pathway is having. Car runs really really good so i will need to address that eventually, but it did not solve my issue. Neutralized LAKH module, again, ran better, did not solve.

Looking back at old logs from 2016 (mods: filter, catless, no emissions equipment) this issue was still occurring, so it followed the car all the way through a full engine build.

I can post logs later but it’d really be a lot easier to meet up and talk with someone in person about this.

any codes? post logs and scan data so others can chime in. talking in person is not better than looking at visual data of what the engine is doing

Here is the most recent complete log at idle.
The oscillation at idle is cyclical and after it warms up, it seem much more random. Other things like corrections are all over the place.

I recently did a leak test up to 25 psi, fixed some leaks and now it holds 25 constantly. I swapped mafs, unplugged mafs, swapped crank pos sensors, cam pos sensors, injectors, n75's, almost every sensor.

I'm not really sure where to look for this.

Can you walk through exactly what is not stock on your build again?

Physical Mod list:

Block:
Overbored 1.8T (1.870cc)
supertech coated pistons 9.6:1 CR
IE H connecting rods rifle drilled
ACL tri-metal race bearings
Elring OEM thickness multi metal head gasket

Head:
OEM, cleaned but no mods
OEM sodium valves
VVT solenoid retained
OEM timing belt and gear

Oil:
Napa gold/wix 51333
OEM oil pump and pickup
s4 oil/water cooler

Turbo:
Garrett GT2860rs
Tial .64 AR turbine housing
Tial MVS-A external WG welded to trubine housing (coolant pasages not used)
Custom welded V band tubular sched 10 exhaust manifold (heatwrapped)
Turboblanket
OEM n75

Exhaust:
3" downpipe (both wideband 02's) (heatwrapped)
catless
3" SS catback, 1 muffler

Intake:
AWIC mounted in place of battery
Custom intake manifold with larger plenum (mildly larger)
OEM throttle body
Heat wrapped pressure pipe from turbo to AWIC
AWIC heat exchanger w/ cobra pump
Cone filter
2.875" ID MAF tube (OEM bosch maf sensor)(placed with 3" of straight fore and aft)
OEM diverter valve

Fuel:
Fuel injector clinic 656cc ball seat injectors
3 bar FPR
OEM fuel pump

Engine operating Sensors:
OEM sensors in all OEM locations (other than maf and n249)

Emissions:
EVAP delete
PCV delete
SAI delete
Tank venting pump delete
cat delete

Ignition system:
LS engine ignition coils with resistorless sparkplug wires and terminals)
Copper OEM heat range NGK resistor plugs

Accessories:
VTA catch can

Transmission/Drivetrain:
Wavetrac LSD 5 speed o2J
g60 steel 21 lb flywheel, supplied by southbend
southbend 425 ft/lb clutch w/ ceramic friction disc
Raxles
audi tt knuckles/control arms

Brakes:
OEM ABS w/ EDL/ASR (no ESP)
Porsche boxter fronts

Suspension:
Other stuff blah blah







As of 08/29/2019 (MytunePERFORMANCE.26-IDLE-KFFWL+KFNLLKHM.01)

Evaporative system:
CDLDP - zero'ed
CDTES - zero'ed
CLATEVE - zero'ed
CLALDPE - zero'ed
ESKONF (0x10c52)(Byte 3 TEV) coded 11 11 00 (00) (for N80 tank vent valve)
ESKONF INFO LOCATED IN VW FILES BASE FOLDER

Secondary air injection:
MSLUB - zero'ed
MSLBAS - zero'ed
ESKONF (0x10c54)(Byte 5 SLP) coded 11 11 10 (11) (for SAI pump relay)
ESKONF (0x10c55)(Byte 6 SLV) coded 00 11 (11) 00 (for SAI relay)
ESKONF INFO LOCATED IN VW FILES BASE FOLDER 

Catalytic converter & O2's:
CDKAT - 0 cat diagnosis
CWDLSAHK - (Code word for probe aging after KAT (not needed if you set CDLASH to 0)
CWKONABG - (Substitute for FKHABMN) - zero'ed (turns off Cat fuel dump on startup)
CLRSKA - set to 0 (dissables cat cleaning function)
LAKH:
   KFLMSKH/0: all 1's
   KFLMSKH/1: all 1's
   LMSTMOT: all 1's (multiplier for KFLMSKH)
   KFLLAKHFH: al 1's (altitude multiplier for KFLMSKH)
   KFLASKH: all 1's
   KFLANSKH: all 1's
   LASDSLA: all 1's

Diverter valve:
KFSDLDSUA - First rows and columns, changed to 0 from 230/200.
THLDUVD - set to 2.5 from 2

Coil packs:
ESKONF ZUE (0x10c4f) coded to (11) (11) (11) (11)
ESKONF INFO LOCATED IN VW FILES BASE FOLDER

Engine displacement increase:
KISRM changed from .1191 to .1122 compensating for engine displacement and intake volume change
KUMSRL changed from .00070400 to .00072800 (tunerpro rounded up from .00072537) compensating for engine displacement increase

FuelingBASE:
KRKTE - set to 0.047064 from .10301
TVUB - set to 2.030 1.390 1.040 0.800 0.640 (CALIBRATION SHEET VALUES)
KVB - set to 472.66 from 316.88
LAMKAML - set to all 1's
Temin - set to .363
Teminva - set to .363
KFVAKL - values changed to suit logs, mainly in bottom rows
KFBAKL - values changed to suit logs, mainly in bottom rows
FKKVS - ALL ONES
KFKHFM - ALL ONES
KFLF - ALL ONES
KFFWL_0_A_ - column over 15 deg C - all 0's
KFFWL_1_A_ - column over 15 deg C - all 0's

FuelingWOT:
KFDLBTS - zero'ed
KFFDLBTS - zero'ed
KFLBTS - laid out majority 1's, tapering down to 0.78
FBSTABGM - set to all 1's
X-axis FBSTABGM - set to 800, 866, 933, 999
TABGBTS - 800.01 deg C
Lamfa - Last two columns tapering to 12.9782 from 14.7 AFR

BOOST/LOAD:
LDRXN - Ramps up to 159% load @ 4520rpm (follows GT2860rs spool curve)
KFLDHBN - Moved up in the 40-50 deg C range 5000-65000 rpm (refer to oem map)

THROTTLE:
KFPED- formed via 3d map-custom for foot feel
KFWDKSMX - set to all 100.
TWDKSV - set to all 65535.0

TORQUE:
KFDMDARO/0/1/2/3 - all 100's (makes ARMD setpoint unreachable, ARMD off)

MAF:
MLHFM- Scaled for a 3" OD MAF tube. Refer to transfer function excel sheet in folder

MISFIRES:
KLRLSALULL - reduced in ide region by 6 to detect more misfires at idle

IGNITION:
KFMRES - flattened to 4.101, last column=0
KFMRESk - flattened to 4.101, last column=0
KFMRESNL - flattened to 4.101, last column=0
KFMRESKH - all 0's
KFZW/2 - flattened in idle regions (under 1500rpm/50%load) to 15.7
KFZWWLRL - row 120 - all 0's (in an attempt to smooth idle ign)
KFZWWLNM - columns 20.25-50.25, rows 600-1000 - all 0's (in an attempt to smooth idle ign)

IDLE:
NLLM/2M (all 8 ) - raised to 860
NFSM/2M (all 2) - raised to 860
NFHZ/FS - raised to 860
NKLDF - raised to 860
NFSKO_0_A/_1_A - raised to 860
NSL - raised to 860
NSACFS_0_A/_1_A - raised to 860
NSKO_0_A/_1_A - raised to 860
NFSSL - raised to 860
NFSKLDF - raised to 860
NSAC_0_A/_1_A - raised to 860
NSLBZLL - raised to 980
KFNLLNST - all 0's
KFNLLKHM - all 860

Any chance you can restore a few things to stock to eliminate a few possibilities?

particularly intake and fuel.

You wont' be able to make full power in the interim but it may help narrow down the problem.

Fuel, yes, easily.

Intake would take a month or two of time to restore as a lot of the oem parts have been discarded and there is a top mounted turbocharger in the way of the oem pressure pipe. Possible, but I'd prefer not to.

attached is the oldest recorded data I have on the car. Its not as concise but it has recorded idle and the more random nature of the oscillation is still occurring.

ENGINE OPERATING ON OEM FILE, UNEDITTED!!

Physical Mod list at time of 01.03.16:

Block:
OEM

Head:
OEM

Oil:
OEM

Turbo:
OEM

Exhaust:
3" downpipe catless (POSSIBLY!! UNSURE IF MOD WAS DONE AT THIS DATE)
2.25" catback, two mufflers

Intake:
Cone filter (POSSIBLY!! UNSURE IF MOD WAS DONE AT THIS DATE)
APR diverter valve operated from manifold vacuum/pressure
all else OEM

Fuel:
OEM

Engine operating Sensors:
OEM sensors in all OEM locations (other than n249)

Emissions:
EVAP delete
PCV delete (VTA crankcase)
SAI delete
Tank venting pump delete
cat delete (possibly)

Ignition system:
OEM

Accessories:
VTA catch can

Transmission/Drivetrain:
OEM

Brakes:
OEM


*.zip is mislabelled. Csv inside is timestamped 01.03.16

Got the 317's into place and realized I had transferred plug types to fit the ev14 denso style plug.

So I put in the 550's out of curiosity and moved KRKTE and TVUB to my old programmed values
KRKTE: .06149400
TVUB: 2.619, 1.459, 1.040, .651, .443

And the highly cyclical oscillation on warmup disappeared. Progress. In the future, I'm going to see if I can mess with TVUB, TVTSPEV, FRLFSDP and FKKVS with the FIC 656cc's. If I can't get it to run smoother, I'll contact FIC and say whatsup. Those injectors were specifically advertised as being useable in the 5VT 1.8T engines. Perhaps it's spray pattern, perhaps it's my values.

My bigger question is: The 656cc's and the 550cc's, once warmed up, run the same. Is this the best idle I can get? fr_w and frm_w are all over the place....




Could anyone post a .csv of a silky smooth idle?

Warmup is going to be wallwetting. Those injectors probably spray more walls than down the intake ports.

So fixing an oscillation would be a combo of getting VAKL/BAKL just right or WFRL itself?

KFFWL

you have a ton of changes to a lot of maps that aren't needed.

I'd start reverting a lot of those back to stock one by one unless you know for a fact you need them.

This.

That was the intention. Stuff like ARMD and LAKH were neutralized to attempt to rule out their influence on the idle quality.

Idle when warmed up was still +-40ish rpm (still is). Is it possible to get a +-10 or less rpm? Or am i asking for too much from the control?

Also, if you look at the data log, it appears at idle, load and rpm are oscillating inversely. When rpm goes down, load goes up and vice versa. Why does that occur??