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10-06-2021, 01:43 AM | #1 |
Scooby Newbie
Member#: 488985
Join Date: Aug 2018
Chapter/Region:
MAIC
Location: pa
Vehicle:2009 wrx dgm |
Vacuum leak at turbo inlet
My Cobb inlet somehow slipped off the turbo ( had a shop do it while they did my air pump delete) and cannot get it reseated properly. I'm having large af learns at idle +15-17. Is it better to unplug the MAF and run closed loop while it leaks or just limp it along as is until I can/have someone help get me get the inlet back on properly? It's my daily so I can't really have it down for a couple days.
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10-06-2021, 02:26 AM | #2 |
Scooby Specialist
Member#: 508105
Join Date: Nov 2019
Chapter/Region:
NWIC
Location: Greater Seattle Area
Vehicle:Link G4X flex tuned 02' EJ205 20G 6MT wagon |
Use Lyfts until you can actually fix the car.
Seriously it'll be cheaper to use rideshare now or rent a car and avoid blowing up your engine from a ****load of unmetered air getting in your turbo and causing you to run lean. Last edited by K3rm1tth3fr0g; 10-06-2021 at 08:54 AM. |
10-06-2021, 03:35 AM | #3 |
Scooby Newbie
Member#: 488985
Join Date: Aug 2018
Chapter/Region:
MAIC
Location: pa
Vehicle:2009 wrx dgm |
Yea I was hoping that wouldn't be th consensus, I'm going to have to find an extra set of hand to take the manifold off asap then, I cannot move it with it on. For what it's worth the wideband shows stoic at all times so I'm still in the ecu's range of adjustment while out of boost, I drove it around the block a couple times while it learned.
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10-06-2021, 06:19 AM | #4 |
NASIOC Vendor
Member#: 198281
Join Date: Dec 2008
Chapter/Region:
MAIC
Location: Virginia
Vehicle:2005 WRX/STi WRB of course |
I'm with Kermit on this one. If you were driving it down the street to a shop for repair, it would be OK, but normal driving I would not recommend.
What the AP shows and reality are not always in sync. The numbers can change faster than your eyes can see them/what a datalog shows/ what is reality based on ECU cycle rate. Unmetered air INTO a turbo engine is not recommended. If you had a boost leak, that would be far less dangerous, but yo have the opposite issue here. Unfortunately, you have a tough choice here. Pay for a ride vs pay for potentially a failed engine (and then be out of a ride) vs trying your luck at a lottery ticket. If it were me, I'd find another mode of transport until the issue can be resolved. |
10-06-2021, 08:24 AM | #5 |
Scooby Newbie
Member#: 486182
Join Date: May 2018
Chapter/Region:
MWSOC
Location: The Nasty Nati
Vehicle:11 STI sparkly fun gray |
Assuming you are 25 or over renting a car for a week is likely cheaper and more convenient than ride share. Even cheaper yet is a case of redbull and a long night in the garage
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10-06-2021, 10:33 AM | #6 |
Scooby Specialist
Member#: 50072
Join Date: Dec 2003
Chapter/Region:
South East
Location: TN
Vehicle:2017 STI Blue |
I'm curious, is that an original Cobb inlet (requires trimming) or their v2 inlet?
Also, if possible, remove the alternator and unbolt the power steering pump (leave hoses connected, but unplug any electrical connections) and set it aside. That might give you enough room without loosening the intake manifold. The Cobb inlet is too bulky and this is the same issue I had with my original Cobb inlet but I caught it before it got this bad. I'm currently using a Killer B inlet that hasn't had any issues staying on the turbo and I previously used a Perrin inlet that fit perfectly and installed easily. Sell that Cobb inlet to someone if it wasn't trimmed too short (if applicable to your model) and buy something that fits. Last edited by djoye; 10-06-2021 at 10:49 AM. |
10-06-2021, 01:59 PM | #7 |
Scooby Newbie
Member#: 488985
Join Date: Aug 2018
Chapter/Region:
MAIC
Location: pa
Vehicle:2009 wrx dgm |
Thanks all. I've arranged ways to get back and forth to work until I can get this sorted. Im just baffled I can't get the damn thing back onto the turbo. Not looking forward to round 3 if me vs a turbo inlet.
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10-06-2021, 04:43 PM | #8 | |
Scooby Specialist
Member#: 50072
Join Date: Dec 2003
Chapter/Region:
South East
Location: TN
Vehicle:2017 STI Blue |
Quote:
Mine was the early model that required trimming, initial install was done without trimming and it eventually crept away from the turbo, I later attempted to trim to improve the fit, I might've trimmed a little too much and just couldn't get it right. It would seem like it was secured to the turbo, but would immediately pull off when tightening down the intake manifold. |
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10-07-2021, 12:40 AM | #9 | |
Scooby Newbie
Member#: 488985
Join Date: Aug 2018
Chapter/Region:
MAIC
Location: pa
Vehicle:2009 wrx dgm |
Quote:
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10-07-2021, 11:16 AM | #10 | |
Scooby Specialist
Member#: 50072
Join Date: Dec 2003
Chapter/Region:
South East
Location: TN
Vehicle:2017 STI Blue |
Quote:
Because the fat end of the inlet inevitably binds when you start tightening things towards the intake, it might be worth it to spray silicone lubricant on a cloth and then liberally wipe it on the inlet tube where it might contact the manifold or PS pump so that it will slip instead of stick and start pulling away from the turbo when it contacts other parts during tightening. |
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10-08-2021, 04:58 AM | #11 | |
Scooby Newbie
Member#: 488985
Join Date: Aug 2018
Chapter/Region:
MAIC
Location: pa
Vehicle:2009 wrx dgm |
Quote:
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