Bouncing revs

[Ondreiko]

Originally Posted by Vroomin86

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

And another reason i dont think it is snorkel issue - she was working fine for quite a while but then suddenly something happened and this bounce appeared. It was ok with HKS duct before.

[Kodename47]

Originally Posted by Ondreiko

And i am terribly knocking on this new flash A02G.

What makes you say that? I see no evidence in that log. What I do see is that you're not using the right addresses for the change in ROM.

[steve99]

Originally Posted by 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

Originally Posted by Kodename47

What makes you say that? I see no evidence in that log. What I do see is that you're not using the right addresses for the change in ROM.

OK heres the deal on A02G roms and OFT

If your running a real A02G rom flashed by the dealer the OFT will not log it correctly.

The reason is the ram addresses for logging knock parameters changed between the A01G and the A02G roms. That why tour IAM reads zero its not knock its just the oft logging incorrect address in ecu. looks like MAF parameters not logging correctly either.

The OFT A02G rom is not rearly an A02G rom its a hacked A01G rom so its loggs correctly but your not actually getting the A02G updates which were probably only idle related as the OFT A02G is rearly just an A01G calid adjusted

The tune tables timing/fueling ect are same A01G/A02G their appeared to be only changes to undefined tables and must have been some code change to shift the ramm addresses for logging

From memory the only knock parameter that logs correctly is KC Learned you can derive IAM and knock from that if your keen.

[steve99]

Originally Posted by 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

the oft will log a couple of "throttle" related parameters i cannot rember them at present but i think one is accelerator pedal position ie the input to ecu and the other is the throttle plate position.

it may be worth logging those and seeing if the throttle pedal position remains constant when you get the rpm bounce.

It going to be difficult to diagnose. lots of stuff happens at idle




your going to have to flash a OFT A01G/A02G rom so your logging works again as it looks like the maf v is also not logging correctly.

[Ondreiko]

Originally Posted by Kodename47

What makes you say that? I see no evidence in that log. What I do see is that you're not using the right addresses for the change in ROM.

Advance multiplier = 0, FLKC = 100. My usual reading should read AM = 1, FLKC = or less than 0. So i was thinking Adv. multiplier less than 1 means knocking anyway.
I just reflashed to OFT OTS based A02G tune and it shows everything as i like =))

[Ondreiko]

Originally Posted by Kodename47

What makes you say that? I see no evidence in that log. What I do see is that you're not using the right addresses for the change in ROM.

Do you mean my OFT was logging A02G using A00G definitions and this is the reason why i saw knocks?

[Ondreiko]

Originally Posted by steve99

OK heres the deal on A02G roms and OFT

If your running a real A02G rom flashed by the dealer the OFT will not log it correctly.

The reason is the ram addresses for logging knock parameters changed between the A01G and the A02G roms. That why tour IAM reads zero its not knock its just the oft logging incorrect address in ecu. looks like MAF parameters not logging correctly either.

The OFT A02G rom is not rearly an A02G rom its a hacked A01G rom so its loggs correctly but your not actually getting the A02G updates which were probably only idle related as the OFT A02G is rearly just an A01G calid adjusted

The tune tables timing/fueling ect are same A01G/A02G their appeared to be only changes to undefined tables and must have been some code change to shift the ramm addresses for logging

From memory the only knock parameter that logs correctly is KC Learned you can derive IAM and knock from that if your keen.

Now i start to undrrstand that features, thank you, mate!

[Ondreiko]

Originally Posted by steve99

the oft will log a couple of "throttle" related parameters i cannot rember them at present but i think one is accelerator pedal position ie the input to ecu and the other is the throttle plate position.

it may be worth logging those and seeing if the throttle pedal position remains constant when you get the rpm bounce.

It going to be difficult to diagnose. lots of stuff happens at idle




your going to have to flash a OFT A01G/A02G rom so your logging works again as it looks like the maf v is also not logging correctly.

Yesterday i reflashed scared mine to OFT based A02G Rom, now it reads correctly

[Ondreiko]

Originally Posted by steve99

the oft will log a couple of "throttle" related parameters i cannot rember them at present but i think one is accelerator pedal position ie the input to ecu and the other is the throttle plate position.

it may be worth logging those and seeing if the throttle pedal position remains constant when you get the rpm bounce.

It going to be difficult to diagnose. lots of stuff happens at idle




your going to have to flash a OFT A01G/A02G rom so your logging works again as it looks like the maf v is also not logging correctly.

And seems i forgot to mention another symptom of the same, as i think, issue - my revs are dropping too slow if i drop accel pedal on either stationary or moving vehicle. It probably can't be measured (i mean dropping speed), but my feeling is strong and i am sure it is not normal and it should drop faster.

[steve99]

Originally Posted by Ondreiko

And seems i forgot to mention another symptom of the same, as i think, issue - my revs are dropping too slow if i drop accel pedal on either stationary or moving vehicle. It probably can't be measured (i mean dropping speed), but my feeling is strong and i am sure it is not normal and it should drop faster.

Maybe throttle body actuator is slow to act or faulty, but this is expensive part too expensive to just try without knowing for sure, maybe have to wait for dealer diagnosis.

maybe just try unplugging and cleaning connector at throttle body.

maybe log throttle/accelerator position and throttle plate position on see they move in sync when throttle released.

I think this will work with car just turned on without starting, you could also watch throttle plate like this by removing intake hose with engine off but ignition on.

[Ondreiko]

Originally Posted by steve99

Maybe throttle body actuator is slow to act or faulty, but this is expensive part too expensive to just try without knowing for sure, maybe have to wait for dealer diagnosis.

maybe just try unplugging and cleaning connector at throttle body.

maybe log throttle/accelerator position and throttle plate position on see they move in sync when throttle released.

I think this will work with car just turned on without starting, you could also watch throttle plate like this by removing intake hose with engine off but ignition on.

This is actually what dealer tried to find yesterday - discrepance between command and actual throttle position, but noone was sure if it was detected yesterday. Anyway, dealer loged all throttle related readings. Will see what kind of answer Subaru motors would receive from Toyota motors, where Subaru definitely will forward my request

[Ondreiko]

So i found to change MAP, MAF sensors and throttle body - nothing has changed, the bounce is still there. I removed HKS duct as well with the same result.
Moreover, today they called me from local dealer as they received answer from Subaru motors. It stated that my case is not an issue and my engine is working the way it should. I promised to inform them as soon as i find the reason of the bounce myself.
Still thinking of a possible bounce source.

[Ondreiko]

So here is kinda conclusion:
occasionally i installed new battery instead of stock Panasonick battery, and the most irritating part of the bounce is gone.
There is little bounce still remained with the car, but it is not bouncing as high as it did with the old battery. I am no more bothering about the bounce meaning i don't feel this bounce as a malfunction anymore.
And i don't think of the door panel (speaker cover) rattle fix while AC is on as this rattle is gone as well as the rough AC working (shakin') mode.
God bless new batteries and punish matsushita