DI Failure Issue

[thill]

Originally Posted by CSG Mike

Sorry, can't see videos at work (I have a real day job... I just pretend to be a racecar driver on the weekends)

Those dang'd day jobs....

[CSG Mike]

Originally Posted by ayau

He's a forum junkie during the day.

Multitasking

[Sigh-on-Rice]

Originally Posted by denkigrve

It should still happen on any shift in any gear since the load is based on RPMs and not gears.

I understood it as it happens when RPM is above 5200 "after" the shift. If you rev to red line in 1st gear, it drops to 4500 RPM in 2nd gear. So, to create the condition in 1-2 shift, you will need to rev the 1st gear to 8600 RPM.

[Sigh-on-Rice]

Originally Posted by thill

Got it. If that South African TSB is correct it describes this condition occurring when you are above 7k rpm in either 3rd, 4th, or 5th gear and then end up back above 5200rpm on the upshift. Not sure why this would not apply to 1st and 2nd (ECU must protect for this?)

Again, assuming all of this is even accurate.

If you rev 1st gear to 7450 and shift to 2nd gear, the RPM would be at 4500.

[FRSBRZGT86FAN]

Originally Posted by thill

Got it. If that South African TSB is correct it describes this condition occurring when you are above 7k rpm in either 3rd, 4th, or 5th gear and then end up back above 5200rpm on the upshift. Not sure why this would not apply to 1st and 2nd (ECU must protect for this?)

Again, assuming all of this is even accurate.

Well, the fix retards timing after 5200 rpm in 3rd 4th and 5th, Idk but wouldn't that mean that maybe the timing is too far advanced by the ecu during and after 3rd?

[Taber]

It seems like aftermarket tunes are remedying this though?

[bestwheelbase]

Originally Posted by Taber

It seems like aftermarket tunes are remedying this though?

Remember, not everybody wants an aftermarket tune. If the car has a defect, the manufacturer should fix it. They have done so in South Africa, at least, we hope so... it will take some time to see if the "fix" is effective and the problems cease.

[dem00n]

These topics are discomfiting.

Now afraid of going past 30K in miles, don't want to miss the TSB...

[FRSBRZGT86FAN]

Originally Posted by Taber

It seems like aftermarket tunes are remedying this though?

They are but nobody wants to pay 600+ dollars for an EcuTek tune that's great and all but it really be Toyota/Subaru's job to fix and/or prevent this, not the owner to go buy there own aftermarket tune and also void any future repairs on the ECU where they will just blame it on your other tune.

[Taber]

Originally Posted by FRSBRZGT86FAN

They are but nobody wants to pay 600+ dollars for an EcuTek tune that's great and all but it really be Toyota/Subaru's job to fix and/or prevent this, not the owner to go buy there own aftermarket tune and also void any future repairs on the ECU where they will just blame it on your other tune.

Oh, I agree 100% with you. A brand new "sports" car should not require an expensive aftermarket tune to fix something like this. My question was really geared more towards myself, who was planning on purchasing a tune in the next month or so anyway, so if this is infact a fix, then great, I'll buy it now.

[Carwhisperer]

Originally Posted by thill

Right, but the detonation should be quite noticeable (popping/backfire) correct? I shift quite often in the 5200+ rpm range from 1-2 and 2-3. I can only imagine lots of people are doing this as well besides me and I have never heard a detonation occur. It seems like this would be happening a lot and there would be tons of failures vs just a handful that have been reported here??

YES. You'll know.

I promise you you'll notice very tiny misfires at high rpms. I did 2 months before things went really south with the injector seals completely damaged and started to go off like fireworks.. I should've known..

Idky there is a new thread on this SAME issue that's been brought up for months now.

[reeves]

Originally Posted by dem00n

These topics are discomfiting.

Now afraid of going past 30K in miles, don't want to miss the TSB...

Don't worry, it's only affecting ~1% of the cars out there.. you're ~99% safe. I stomp on mine's all the time without worry.. almost up to 30K too

[Carwhisperer]

Originally Posted by reeves

Don't worry, it's only affecting ~1% of the cars out there.. you're ~99% safe. I stomp on mine's all the time without worry.. almost up to 30K too

As of right now sure. But to put it in perspective I know about 15 86 owners in my local area and 4 of them have had the DI collar issue. 1 of them that has had the issue is active on these forums. All 4 of us are 20k Miles + and bought the car either last June/July.

[bestwheelbase]

Originally Posted by Carwhisperer

to put it in perspective I know about 15 86 owners in my local area and 4 of them have had the DI collar issue. 1 of them that has had the issue is active on these forums. All 4 of us are 20k Miles + and bought the car either last June/July.

Exactly. Lots of owners don't post on forums.