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Old 02-23-2021, 04:01 PM   #1
ImaginaryRex
Scooby Newbie
 
Member#: 353838
Join Date: Apr 2013
Chapter/Region: TXIC
Location: Houston, TX
Vehicle:
2017 WRX Limited
WRB

Default OEM turbo replacement and tune

So, my car fell victim to a frozen AOS line that caused the turbo seals to fail from too much pressure. I am replacing the turbo with the same factory one currently on the vehicle. It is tuned already for the mods on the car currently. Do I need to re-tune the car after replacing the turbo?

Mods for reference:
Grimmspeed tmic, intake, ebcs, and charge pipe
Egr and catback
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Old 03-03-2021, 06:19 PM   #2
RjDeeble
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Join Date: Apr 2020
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What AOS did you go with? Was it hard to install?
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Old 03-04-2021, 02:47 AM   #3
alexmartynyuk
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Member#: 191967
Join Date: Oct 2008
Location: Vancouver
Vehicle:
2005 EVO VIII
@boost_reality

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Quote:
Originally Posted by ImaginaryRex View Post
So, my car fell victim to a frozen AOS line that caused the turbo seals to fail from too much pressure. I am replacing the turbo with the same factory one currently on the vehicle. It is tuned already for the mods on the car currently. Do I need to re-tune the car after replacing the turbo?

Mods for reference:
Grimmspeed tmic, intake, ebcs, and charge pipe
Egr and catback
as long as nothing has been changed modification wise since the last tune then no you do not need a retune after replacing the turbo.
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Old 04-05-2021, 05:43 PM   #4
ImaginaryRex
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Member#: 353838
Join Date: Apr 2013
Chapter/Region: TXIC
Location: Houston, TX
Vehicle:
2017 WRX Limited
WRB

Default

Just an update for the possible future googlers: Short answer on a new tune being needed - No, but possibly. This was according to both the shop and the tuner (Ron).

The drive home after picking it up was uneventful. No knocks, no weird AF corrections. The rear O2 sensor died on me and I expect the front to fail eventually as well due to the amount of oil that was dumped into the exhaust.

I used the opportunity to finish my mods and installed a Jpipe and went ahead and retuned. All is well, hope I never have to deal with that again. The AOS was KillerB. However, I highly doubt this would have been avoidable unless there was no AOS installed at all.
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