Brz doesn't like to idle

[Bonburner]

Originally Posted by Tcoat

OK so your first 3 links are from October 2012 so not sure how many people actually had an issue. They all are just clickbait's parroting each other anyway not even independent investigations. The issue was fixed before 99% of the cars wee ever sold.
Your 4th link is an issue very specific to one model year with AT only. Again it was fixed with a simple update.
Your 1200 other hits mostly start with "I have an XXX turbo or tune and have idle issues". Pretty much supports they are a mod and tune related problem. Oh and of course there are the many many "Happens when the A/C is on" which is perfectly normal but some people refuse to understand that.

Idle issues are not common on unmodded cars after the very first batch. If somebody with a tuned car has this issue they need to check the tune not ignore it and say "OH these engines all do that". They don't.

Every twin I've seen experienced some from of brief rough idling dip, even after the "fix".

I will confess I haven't spent as much time with the newer models after 2015, but I have still seen it in every twin I have looked at - including the occasional newer models up to 2018. I haven't personally looked past 19 models.

It also could be because I'm in California - which mostly sells only up to 91 octane. May attribute to a roughly idle. And yes, a tuner should be able to fix it.

[toughguy39]

Originally Posted by tomm.brz

Let me guess.
Ecutek racerom and US base tune, like it ends with the letter C...




Bug. I talked about it often, no one ever cared about it, so there is no fix for you unless you force your tuner to convert your tune with an EU base tune... thing that he will not do it also because he's not aware of, and your idle will always suck

Can you explain this a little more? What do you mean by C and US base tune? To clarify, I am turbocharged and had a previously working tune with Ecutek with no idle problems at all.

[toughguy39]

Originally Posted by makinen

Do flash new tune when the engine is warm. And search "subaru idle relearn".

I'll give that a try, will reply with the results later

[toughguy39]

Originally Posted by tomm.brz

not really. once it settles and only DI is used for idle, is pretty rock solid


Who has idle problems, has actually tune problem

Yeah, maybe that's would explain why after idling for 5-10 before driving solves my issue too

[Grady]

Work with you tuner, Also since you have done the intake manifold double check for intake leaks.

[toughguy39]

update:
still not solved, also pulled code 0463 so im gonna work on that.
none of the above solutions have worked, and my tuner went on a vacation apparently and has a bunch of cobb users trying to get their flex tunes up. maybe ill get a reply this weekend.

is there any chance the boost controller replacing the EVAP has any effect on this? EVAP system and hoses (clamped) are still there, just not powered.

[tomm.brz]

do you have a log ?

[toughguy39]

Originally Posted by tomm.brz

do you have a log ?

https://drive.google.com/file/d/1cCV...ew?usp=sharing

[tomm.brz]

Please make an account in datazap. me , upload it and link it to us

[toughguy39]

Originally Posted by tomm.brz

Please make an account in datazap. me , upload it and link it to us

https://datazap.me/u/toughguy39/stalling

As requested. Log file 23-23-44 showcases the issue. started data log, replicated problem and ended it. It also appears the issue only occurs if i go to neutral under 2-2.5k rpm.

[tomm.brz]

https://datazap.me/u/toughguy39/stal...zoom=1217-4841

do you see that? PI switching to 100% all the time when you leave the throttle?

that s the bug i was talking about

you never gonna have your car idling good and smooth
unless your tuner force-upgrades you and totally converts your tune to an euro tune
that brings some problems, 1) i m almost sure your tuner isn t aware of this bug and doesn t carr, and he doesn t know how to force-upgrade you 2) by converting to euro tune and get away with the bugs, the fueling will be quite off, so you will require a complete new retune

[toughguy39]

Originally Posted by tomm.brz

https://datazap.me/u/toughguy39/stal...zoom=1217-4841

do you see that? PI switching to 100% all the time when you leave the throttle?

that s the bug i was talking about

you never gonna have your car idling good and smooth
unless your tuner force-upgrades you and totally converts your tune to an euro tune
that brings some problems, 1) i m almost sure your tuner isn t aware of this bug and doesn t carr, and he doesn t know how to force-upgrade you 2) by converting to euro tune and get away with the bugs, the fueling will be quite off, so you will require a complete new retune

If I'm understanding this right, since this is a bug within the ECUTEK software, why can't they fix it and code it properly?

[tomm.brz]

it s a bug in the racerom patch specifically, from around racerom 10.1 till the newest 12.3, it s present..

for the question you asked, you should ask ecutek directly and why they don t provide a fix , i don t work for them
They reverse engineer the tune from the stock directly, they do not have any help from Subaru, they find what they find. I told them via email about the bugs afflicting US tunes patched with racerom, they don t care about this car anymore.

they are based in England, and they own a Euro car.. they always defined very well the euro tunes, not so much US and asian tunes

I keep writing in this forum that US tunes are bugged since years when patcher with ecutek.. but nobody listen to me or believe me, so unless you do something against it, you will have a bugged and not smooth tune forever.. as HUNDREDS of other americans people in here that have no idea of what s happening in their car and trust tuners like Delicious

[toughguy39]

Originally Posted by tomm.brz

it s a bug in the racerom patch specifically, from around racerom 10.1 till the newest 12.3, it s present..

for the question you asked, you should ask ecutek directly and why they don t provide a fix , i don t work for them
They reverse engineer the tune from the stock directly, they do not have any help from Subaru, they find what they find. I told them via email about the bugs afflicting US tunes patched with racerom, they don t care about this car anymore.

they are based in England, and they own a Euro car.. they always defined very well the euro tunes, not so much US and asian tunes

I keep writing in this forum that US tunes are bugged since years when patcher with ecutek.. but nobody listen to me or believe me, so unless you do something against it, you will have a bugged and not smooth tune forever.. as HUNDREDS of other americans people in here that have no idea of what s happening in their car and trust tuners like Delicious

Well, SOL i am I guess :/ Didn't want to dyno tune since the closest reputable dyno is a 3 hour drive, maybe that's in order. This is something a dyno could easily adjust yeah?