Bouncing revs

[Ondreiko]

Or is it my throttle died a bit?...

[FRS Justin]

Originally Posted by Ondreiko

Here is fresh log of mine
http://datazap.me/u/ondreiko/fresh-w...9-10-14&solo=2 starting with wot pulls (and there are some thereafter)
i seem knocking. Or not? Log looks really strange cos MAF is jumping upto 14+ whilst the pull - should this issue be somehow concerned to overflowing do you think? Or is this the direct reason for knocking? And do i knock at all (flkc) taking into consideration advance multiplier 1?

My friend, the log doesn't look right to me but I can't tell you why or what to look for in tuning. Try posting your logs in the tuning section maybe someone else can help. good luck

[steve99]

Originally Posted by Ondreiko

Or is it my throttle died a bit?...

has that tune has maf scaling changed ?

if so check the values maf values at low flow rates mabye some typing error and the load limits.


load the stock tune and see if problem is still their

[Ondreiko]

Originally Posted by steve99

has that tune has maf scaling changed ?

if so check the values maf values at low flow rates mabye some typing error and the load limits.


load the stock tune and see if problem is still their

Hey Steve!

It is bouncing the same way as on OFT OTS Stg2 tune as will as on slighly tweaked MAF scale - it should not be a reason as far as i understand it.

[Ondreiko]

Originally Posted by steve99

has that tune has maf scaling changed ?

if so check the values maf values at low flow rates mabye some typing error and the load limits.


load the stock tune and see if problem is still their

Just flashed stock and put on the stock air filter - picture is the same, the bounce is clearly there
http://datazap.me/u/ondreiko/stock-f...a=1-2-6&solo=2
i also inspected MAF sensor - it doesnot feel sticky at all - do i have to try clean it anyway or should i better find some other possible reason?

[Ondreiko]

Now the same picture shows at stock ROM and Takeda intake - i may now suggest that it suppose NOT to be intake or software issue - then what!? Exhaust leaking? May exhaust produce this revs bounce? Unless my throttle is in order...
http://datazap.me/u/ondreiko/takeda-...2-3-6&mark=179

[steve99]

Originally Posted by Ondreiko

Now the same picture shows at stock ROM and Takeda intake - i may now suggest that it suppose NOT to be intake or software issue - then what!? Exhaust leaking? May exhaust produce this revs bounce? Unless my throttle is in order...
http://datazap.me/u/ondreiko/takeda-...2-3-6&mark=179

Did takeda intake use oiled filter ?
if so maf may have some oil on ir, you can buy special maf cleaner spray, but you can also use electronic circuit cleaner.

now you know its not tune or intake and if its not dirty maf then its likely to be difficult issue to track down.

now car is back to stock if still under warantee best take to dealer as may be throttle body issue or maf sensor ect.

[Ondreiko]

Originally Posted by steve99

Did takeda intake use oiled filter ?
if so maf may have some oil on ir, you can buy special maf cleaner spray, but you can also use electronic circuit cleaner.

now you know its not tune or intake and if its not dirty maf then its likely to be difficult issue to track down.

now car is back to stock if still under warantee best take to dealer as may be throttle body issue or maf sensor ect.

I have 2 different MAF sensors - one for Takeda, one for stock tube and both of them behave same way. And there is dry filter on takeda, so should not be sensor issue anyway.

The dealers here... you know, i feel i know much more about my car than the local dealer, so i would better find what is wrong myself then take it to the dealer directly pointing the issue. I told you i was at the dealer and asked about the bounce, so they just cleaned throttle body. But will try it sometime anyway.

[Vroomin86]

@Ondreiko did you go stock everything? Stock ROM, stock filter, and remove the HKS snorkel?






did it still do it?

[FRS Justin]

Try cleaning your throttle body its a long shot but you never know.

[Ondreiko]

Originally Posted by Vroomin86

@Ondreiko did you go stock everything? Stock ROM, stock filter, and remove the HKS snorkel?






did it still do it?

i went stock everything except snorkel, but the picture didnot change at all - i was trying to catch some differencies in order to determine the reason of the issue, but didnot find any changes yet. My throttle body is clean - couple weeks ago i was at the dealer's and they did it first after i told them about the issue - but it didnot help either...
Wiil go and buy some silicone spray and will refresh manifold pressie sensor's o-ring now again - to see if this changes something. Have no more ideas to investigate.

[Ondreiko]

Originally Posted by Ondreiko

i went stock everything except snorkel, but the picture didnot change at all - i was trying to catch some differencies in order to determine the reason of the issue, but didnot find any changes yet. My throttle body is clean - couple weeks ago i was at the dealer's and they did it first after i told them about the issue - but it didnot help either...
Wiil go and buy some silicone spray and will refresh manifold pressie sensor's o-ring now again - to see if this changes something. Have no more ideas to investigate.

manifold pressure sensor o-ring refreshing didnot help too.
Let me know if the throttle graph in logs showing command or real throttle position? i am wondering, if it shows 0, does it definitely mean that the throttle is closed or is it just DBW command line?
http://datazap.me/u/ondreiko/3-wots-...-6-11&mark=317

[Vroomin86]

Originally Posted by Ondreiko

manifold pressure sensor o-ring refreshing didnot help too.
Let me know if the throttle graph in logs showing command or real throttle position? i am wondering, if it shows 0, does it definitely mean that the throttle is closed or is it just DBW command line?
http://datazap.me/u/ondreiko/3-wots-...-6-11&mark=317

You changed everything except the snorkel! try stock snorkel, reflash to stock rom and see what happens

[Ondreiko]

just was at the dealer's service. they didnot recognise the issue, made a log with the bounce and reflashed me upto A02G (my original cal id was A00G). So they promised to send the file to subaru motorz as soon as the warranty engineer returns from vacation (in one-two weeks).
And i am terribly knocking on this new flash A02G.
http://datazap.me/u/ondreiko/stock-a...=0&data=1-9-14