Learning View Snapshots \ Discussions

[phuriouss]

Hi Team,

My LV from btSsm:

Car is a MY05 LGT 5spd Manual - 10w40 Nulon Fully Synthetic - 190k ODO
The only mods: HKS panel filter, X force y-pipe to 5" canon mufflers

After I took this LV, went for a quick 10 minute drive and notice my IAM dropped to 0.5
As well as some knock values ?

KNOCK DETECTED at 2015-05-22 07:27:28 pm
AFR: 12.4
Battery (V): 14.0
Boost (psi): -4.8
Coolant (degC): 84
FKC (deg): -2.11
FLKC (deg): 0.00
Fuel pump DC (%): 33.3
IAM: 0.500
Injector DC (%): 6.2
Injector PW (ms): 4.4
Intake (degC): 19
Knocks: 13
Load (g/rev): 0.49
MAF (g/s): 14
Misfire cyl 1: 0
Misfire cyl 2: 0
Misfire cyl 3: 0
Misfire cyl 4: 0
RPM: 1699
Speed (kmh): 6.0
Throttle pedal (%): 5.5
Throttle plate (%): 10.6
Timing (deg): 33.0
VVT int L (deg): 4
VVT int R (deg): 4
VVT exh L (deg): 20
VVT exh R (deg): 20



KNOCK DETECTED at 2015-05-22 07:10:37 pm
AFR: 14.9
Battery (V): 13.9
Boost (psi): 3.3
Coolant (degC): 87
FKC (deg): -5.98
FLKC (deg): 0.00
Fuel pump DC (%): 66.7
IAM: 0.500
Injector DC (%): 15.8
Injector PW (ms): 8.2
Intake (degC): 25
Knocks: 18
Load (g/rev): 1.27
MAF (g/s): 49
Misfire cyl 1: 0
Misfire cyl 2: 0
Misfire cyl 3: 0
Misfire cyl 4: 0
RPM: 2308
Speed (kmh): 20.0
Throttle pedal (%): 61.2
Throttle plate (%): 36.1
Timing (deg): 13.0
VVT int L (deg): 20
VVT int R (deg): 21
VVT exh L (deg): 29
VVT exh R (deg): 28

Car has been experiencing rough idle/hesitation on low rpms, struggles and stutters...
I'll take a log soon, what parameters should I be logging to better diagnose the problem and under what conditions?
Any advice will be appreciated

Thanks

[HardwareBoB]

LV fuel correction #1 maxed = you have a boost/vacuum leak.

[THE SpecB]

Any advice on this LV would be appreciated. IAM is at 1
Thank you

[dr20t]

Above LV is perfectly normal

[THE SpecB]

[quote="dr20t"]Above LV is perfectly normal[/quote

Thanks Dr20 what if values appear in blue ?

[phuriouss]

Oh okay I will check for vacuum/boost leaks, thank you

Also could a vacuum leak cause the IAM to drop to 0.5 and cause the knock detection too?
Or just one of the many possible problems haha
Would you be able to explain to me what the knock parameter btSsm is measuring, is it knocking correction (degrees)?

Thanks for your help

[bigBADbenny]

Do you have a tune?
Probably a good idea with those zorst mods...
Also take a peek at the romraider FAQs on logging as it's preferable to log the bare minimum of parameters at least once you've established what is working properly
Eg seperate profiles for airflow ranges and tune related logging... It's in the FAQ...

[phuriouss]

Hey Ben,

Nope no tune yet
So I will log at 1500 rpm for 30 sec and repeat for 2000 rpm and 3000 rpm on all seperate logs? (in gear & clutch in stationary? or does the car have to be moving?)
Sweet I'll check it out!

Thank you

[bigBADbenny]

No not moving, but then also log it on the freeway as per the instructions.
Then move onto boost vac leak testing, inlet, tmic and zorst as per tune FAQ.

[phuriouss]

Thanks for your help mate!
Will report back with logs

[bigBADbenny]

Maybe start a new thread or post the issue in your member profile

[Shaheenis]

Since my 125K service and fuel pump replacement my LV looks different. Mechanic said it is conceivable it would require a tweak as the old pump/filter may have supplied a slightly varied base pressure? I notice some knock has been introduced to my LV but this may have been pre above work. I did some logging last night, sat in driveway, reset logs and blipped the throttle and saw the knock appear - no load. Thoughts?

[bigBADbenny]

It's that low load preemptive knock imho.
I'm going to reset my ECU one day soon and make an LV after each drive for a week or so, to have a record of the learning in process, to better my understanding of the process
https://www.google.com.au/search?q=low+ ... ock+subaru


.

[KiDo_Tuning]

Since my 125K service and fuel pump replacement my LV looks different. Mechanic said it is conceivable it would require a tweak as the old pump/filter may have supplied a slightly varied base pressure? I notice some knock has been introduced to my LV but this may have been pre above work. I did some logging last night, sat in driveway, reset logs and blipped the throttle and saw the knock appear - no load. Thoughts?

If LV is pulling timing it means it is not knocking, just showing the value thats being pulled because it has learnt to pull it etc

Also, the AF#1 trims have changed so that is the likely cause on spool as the trims affect closed loop and your in closed loop in that first column

[Shaheenis]

Thanks Matt, so this is normal then? The LV looks healthy or need a tweak?

Thanks Ben for the link on the light load knock correction. This one is quite an interesting article.

Taken from the following link: http://www.evoxforums.com/forums/archiv ... 16998.html

'..As a result, light load "knock correction" is not something to worry about. This is a normal process that is even more apparent when utilizing stock calibrations designed to utilize a range of fuel quality.. '