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Issues | Warranty | Recalls / TSB Problems, issues, recalls, TSBs


View Poll Results: Have you had an issue with your Direct Injection System?
I have had a DI issue and was fixed under warranty (Subaru) 10 12.35%
I had a DI issue that caused Engine Failure and was fixed under warranty (Subaru) 2 2.47%
I have had a DI issue and was fixed under warranty (Toyota) 31 38.27%
I have had a DI issue that caused Engine Failure and was fixed under warranty (Toyota) 3 3.70%
I have had a DI issue and denied warranty by (Subaru) 7 8.64%
I have had a DI issue and denied warranty by (Toyota) 14 17.28%
I had a DI issue that caused Engine Failure and was Denied warranty (Subaru) 8 9.88%
I had a DI issue that caused Engine Failure and was Denied warranty (Toyota) 6 7.41%
Voters: 81. You may not vote on this poll

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Old 06-05-2013, 02:19 PM   #15
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OK, I haven't checked my injectors yet but I am getting some backfiring/popping between aggressive shifts occasionally on my BRZ w/ AVO Stage 1 turbo kit. During my major cam issues and an idle stall/shudder event, I did throw a P0300 misfire, but it hasn't done it again since the cam repairs and I have not thrown a single code since then.

Is the slight popping/backfiring between shifts normal with a high-flow cat and engine back exhaust, or should I start worrying about replacing injectors etc?
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Old 06-05-2013, 02:30 PM   #16
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Is there any correlation to VIN#s or manufacture dates?

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Is the slight popping/backfiring between shifts normal with a high-flow cat and engine back exhaust, or should I start worrying about replacing injectors etc?
Some backfiring popping from the exhaust on throttle/RPM transition is not a sign of preignition/knock/ping/detonation, especially with aftermarket exhaust, FI, tuning, etc.
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Old 06-05-2013, 02:33 PM   #17
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Originally Posted by vubaru View Post
OK, I haven't checked my injectors yet but I am getting some backfiring/popping between aggressive shifts occasionally on my BRZ w/ AVO Stage 1 turbo kit. During my major cam issues and an idle stall/shudder event, I did throw a P0300 misfire, but it hasn't done it again since the cam repairs and I have not thrown a single code since then.

Is the slight popping/backfiring between shifts normal with a high-flow cat and engine back exhaust, or should I start worrying about replacing injectors etc?
Im all stock and experience it rarely. Its not a pleasant sound either, Is yours a muffled single pop coming straight from under the car?
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Old 06-05-2013, 02:49 PM   #18
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Quote:
Originally Posted by vubaru View Post
OK, I haven't checked my injectors yet but I am getting some backfiring/popping between aggressive shifts occasionally on my BRZ w/ AVO Stage 1 turbo kit. During my major cam issues and an idle stall/shudder event, I did throw a P0300 misfire, but it hasn't done it again since the cam repairs and I have not thrown a single code since then.

Is the slight popping/backfiring between shifts normal with a high-flow cat and engine back exhaust, or should I start worrying about replacing injectors etc?
When you are turbo and have a vented to atmosphere BOV and it is post MAF sensor like the AVO kit, you will be RICH on shifts (lift gas pedal BOV dumps metered air to atmosphere gas is left in the cylinder to be burned), and thus the unburned fuel will backfire and pop in the exhaust. That has nothing to do with this issue.
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Old 06-05-2013, 02:50 PM   #19
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My VIN is **2379 (BRZ).

@wheelhaus, thanks for the response all the injector failure threads are making me paranoid.

@Carwhisperer, we may be experiencing different things but I don't know. The main analogy I can make is to my old 2.5 RS which had headerback exhaust with Borla UEL's, under shifting there is a slight burble or rasp, or occasionally a single muffled pop as you describe between shifts (mostly when driving aggressively). But no CEL's or DTC's when it occurs and my Ecutek logs do not show me running lean...if anything Paul says I'm running rich.

@Sportsguy83 David I have a full recirc BOV, but you are correct that Paul has advised I am running a bit rich. I suspected this was unburned fuel but again, am just paranoid and better safe than sorry!

After the misfires I'm still a bit concerned but I'll just monitor and keep an eye on it.
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Old 06-05-2013, 02:52 PM   #20
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@Sportsguy83 David I have a full recirc BOV, but you are correct that Paul has advised I am running a bit rich. I suspected this was unburned fuel but again, am just paranoid and better safe than sorry!

After the misfires I still feel like the best practice would be to check plugs and the injectors so I better have someone do that just in case...
I have the AVO BOV set 50/50 to vent and you can hear the pop on most shifts, but its unburned fuel, you are probably getting something very similar.
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Old 06-05-2013, 03:13 PM   #21
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poll!!!! yeah like others said we need "don't have issue yet!" on choices
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Old 06-05-2013, 03:24 PM   #22
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I've heard the popping from directly under neath the car (almost right below my butt it feels like) but I have not thrown any codes yet and it's only happened twice. I'm waiting for the injector tune fix from FA20club to see if it happens after I flash the update.

Running slighlty modded. FA20club CAI and Tune.

VIN # *******5563
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Old 06-05-2013, 03:45 PM   #23
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if Toyota/Subaru doesn't come out with solution for long time, other alternative is getting ECU flashe through Tuners
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Old 06-05-2013, 06:02 PM   #24
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if Toyota/Subaru doesn't come out with solution for long time, other alternative is getting ECU flashe through Tuners
I'm hoping just an ECU flash can be the remedy. From what I've read it looks like it is a heat issue with the injector seals so I'm not sure if new calibrations can fix this. Anyone who knows that they are talking about want to chime in?
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Old 06-05-2013, 06:34 PM   #25
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I'm hoping just an ECU flash can be the remedy. From what I've read it looks like it is a heat issue with the injector seals so I'm not sure if new calibrations can fix this. Anyone who knows that they are talking about want to chime in?
The heat issue is caused by the ECU mapping resulting in detonation. Fix the ECU, fix the problem (in theory.)
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Old 06-05-2013, 08:08 PM   #26
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The heat issue is caused by the ECU mapping resulting in detonation. Fix the ECU, fix the problem (in theory.)
Beautiful! I'm tempted to stop driving and just hitch rides to work until I get the update in my inbox. Especially since it just keeps getting hotter around here.
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Old 06-05-2013, 08:20 PM   #27
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Hey take off the bottom "I do not have an issue" pole. It's going to throw everything else off once there is a good amount of feedback. Unless if you know how to do conversions well.
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Old 06-05-2013, 08:25 PM   #28
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The heat issue is caused by the ECU mapping resulting in detonation. Fix the ECU, fix the problem (in theory.)
I know of two other people that might not be on this forum that are Viconti tuned and have had a DI issue, ill try to send them a txt to visit this poll.


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Hey take off the bottom "I do not have an issue" pole. It's going to throw everything else off once there is a good amount of feedback. Unless if you know how to do conversions well.
Just sent a pm to a moderator.
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