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Old 07-13-2017, 07:38 AM   #126
tyler37075
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you'll blow your rods out, kid.
what????
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Old 07-14-2017, 02:03 PM   #127
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what????
Yeah Ralphy, listen to simpleJ
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Old 08-03-2017, 02:06 AM   #128
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can you reach the solenoid connector without removing the intercooler? imma do it this weekend.

Also there is an EGR actual / commanded param in the AP. I had it side by side with the intake manifold temp.

EGR actual would be at 0 under medium -hard acceleration / idle. It was at 0 when you let off the pedal as well. It would go up under very light accel / cruise control. Everytime EGR actual went up, the intake manifold temps rised pretty quickly by 20-30 degree. They would drop wheb EGR was 0.

tldr EGR Actual 0 = Valve closed.
You can verify it stays closed after been uplugged by looking at your intake manifold temps.
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Old 08-03-2017, 08:13 AM   #129
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Quote:
Originally Posted by dvazriel View Post
can you reach the solenoid connector without removing the intercooler? imma do it this weekend.

Also there is an EGR actual / commanded param in the AP. I had it side by side with the intake manifold temp.

EGR actual would be at 0 under medium -hard acceleration / idle. It was at 0 when you let off the pedal as well. It would go up under very light accel / cruise control. Everytime EGR actual went up, the intake manifold temps rised pretty quickly by 20-30 degree. They would drop wheb EGR was 0.

tldr EGR Actual 0 = Valve closed.
You can verify it stays closed after been uplugged by looking at your intake manifold temps.
Yes you can do it without removing the intercooler! It is an extremely tight fit, but you can reach it through a gap in the intake manifold. I used one finger and a screw driver to position it just right to remove it. It took me a bit of straining as I have big hands, but was able to get it after about 10 minutes.
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Old 08-03-2017, 12:44 PM   #130
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I actually just did this earlier this week.

if you look in from the front you can see the plug. use a long flat head screw driver so you can depress the release button and give it a small push to unseat it and ensure it doens't lock back in. Then reposition the screw driver closer to the end of the plug(there's a small block you can push against) and the plug pops right off.

You can get this done in a few minutes.
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Old 08-13-2017, 12:21 AM   #131
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Within a few days of unplugging my EGR solenoid I got a P2270 OBD-II Trouble Code: O2 Sensor Signal Stuck Lean Bank 1 Sensor 2. This happen to anyone else? Any insight on how/if they can be related at all?
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Old 08-13-2017, 11:16 AM   #132
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Originally Posted by darkvader0 View Post
Within a few days of unplugging my EGR solenoid I got a P2270 OBD-II Trouble Code: O2 Sensor Signal Stuck Lean Bank 1 Sensor 2. This happen to anyone else? Any insight on how/if they can be related at all?
Are you tuned for an unplugged EGR?
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Old 08-13-2017, 07:12 PM   #133
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Yeah I unchecked the nine trouble codes relating to EGR operation. The P2270 Second O2 stuck lean code was not one of them.
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Old 08-13-2017, 11:47 PM   #134
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Originally Posted by darkvader0 View Post
Yeah I unchecked the nine trouble codes relating to EGR operation. The P2270 Second O2 stuck lean code was not one of them.
I believe you have to zero out a few tables (4 I believe) which adjust fuel mixture depending on EGR position. The ECU adjusts fuel mixture based on what it commands the EGR to do, even though it's unplugged. Since exhaust gases have some un-burnt fuel in them, the ECU removes some fuel when the valve is open. Since the valve isn't connected and closed all the time, the engine is sometimes running lean since these gases are no longer entering the combustion chamber. By zeroing out the tables it doesn't adjust fueling which should prevent the lean condition.
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Old 02-26-2018, 09:00 AM   #135
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Bumping this for any updates, how have you guys felt after all the testing. Do we have a general consensus that unplugging the EGR connector and tuning out the code is enough for it to be effective as a delete?

My major concern is warranty support as it's basically confirmed that a tune would deny any warranty claim and even if I flash back to stock with EGR deleted it will throw the Check Engine light so dealer would see that as well. If I can just plug in the connector when it comes warranty support time and flash back to stock map and bring it that would be much preferred.

Thoughts or experiences with the same?
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Old 02-26-2018, 12:22 PM   #136
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Originally Posted by open1your1eyes0 View Post
Bumping this for any updates, how have you guys felt after all the testing. Do we have a general consensus that unplugging the EGR connector and tuning out the code is enough for it to be effective as a delete?

My major concern is warranty support as it's basically confirmed that a tune would deny any warranty claim and even if I flash back to stock with EGR deleted it will throw the Check Engine light so dealer would see that as well. If I can just plug in the connector when it comes warranty support time and flash back to stock map and bring it that would be much preferred.

Thoughts or experiences with the same?
Confirmed by who? I've never been denied a warranty claim and I've got a few mods installed. It's all dependent on your local service department. Some are more mod friendly than others.
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Old 02-26-2018, 12:46 PM   #137
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Originally Posted by WRXLVR82 View Post
Confirmed by who? I've never been denied a warranty claim and I've got a few mods installed. It's all dependent on your local service department. Some are more mod friendly than others.
Officially it has been confirmed by multiple Subaru dealerships that any modification to ECU will deny your warranty without question. The keyword here is "officially", of course there will be dealerships here and there that may "overlook" your modifications in hopes of continuing business with you but you will really have to shop around to find that out. Officially every time it's been asked by many folks to most dealerships and SoA themselves they mention that yes, a tune will most definitely deny your warranty claim if they find out that you have one.

In fact there was a video by one owner done as an experiment recently regarding the same topic


Last edited by open1your1eyes0; 02-26-2018 at 12:53 PM.
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Old 02-26-2018, 01:01 PM   #138
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I unplugged mine and have been running for a few weeks. I'm currently tuned for it. Intake manifold temp is generally 10-20 degrees higher than ambient temperature (per the car's built in temperature reading).

No issues. No CEL.
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Old 04-03-2018, 01:36 PM   #139
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i'm trying to figure out whether to delete or just unplug, my tuner said he has seen the valves leak if you just unplug. the delete kit is so cheap i'll probably just do it
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Old 04-03-2018, 02:46 PM   #140
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i'm trying to figure out whether to delete or just unplug, my tuner said he has seen the valves leak if you just unplug. the delete kit is so cheap i'll probably just do it
Is your tuner selling you the parts or labor by chance?

If it leaks, what difference does it make? It was leaking the whole time it was on the care and supposedly closed.
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Old 04-03-2018, 04:14 PM   #141
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Is your tuner selling you the parts or labor by chance?

If it leaks, what difference does it make? It was leaking the whole time it was on the care and supposedly closed.
haha he offered to, but if i do buy it i'll do the install myself. it's cheap anyway

he just said he has seen them leak before in the past with just the disconnect
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Old 04-05-2018, 04:15 PM   #142
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I just asked my Snail Performance in Auburn, CA what would be best, full delete or unplug. He told me delete would be best as it leaks. So tonight I will be doing a full delete along with EBCS and TGV's.
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Old 04-05-2018, 04:51 PM   #143
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EGR DELETES ARE A WASTE OF MONEY
CHANGE MY MIND



The EGR valve closes during wide open throttle, low temperatures, and moderate load cruise situations and when the manifold is pressurize, exhaust can't enter the manifold.
Let's say it leaks, just a little. Is there any detriment caused by the leakage in these situations on the factory car or any other car that retains the valve? No. Why would it be detrimental when it's unplugged 24/7?

How does anyone even know they leak? Did they stick a camera in the manifold during a dyno pull? Or are they just making a sale.
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Old 04-05-2018, 05:53 PM   #144
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Quote:
Originally Posted by simpleJ View Post
EGR DELETES ARE A WASTE OF MONEY
CHANGE MY MIND



The EGR valve closes during wide open throttle, low temperatures, and moderate load cruise situations and when the manifold is pressurize, exhaust can't enter the manifold.
Let's say it leaks, just a little. Is there any detriment caused by the leakage in these situations on the factory car or any other car that retains the valve? No. Why would it be detrimental when it's unplugged 24/7?

How does anyone even know they leak? Did they stick a camera in the manifold during a dyno pull? Or are they just making a sale.
Honestly I just did it for the weight savings (lol) and clean up the engine bay. It's $50. Unplugging it achieves the same thing.
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Old 04-05-2018, 09:25 PM   #145
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Originally Posted by simpleJ View Post
EGR DELETES ARE A WASTE OF MONEY
CHANGE MY MIND
I literally lol'd

Seriously though, I'm having a hard time justifying the 10-15whp of the TGV/EGR delete combo too, let alone the EGR delete by itself.

Flex Fuel, 3-port, J-Pipe, and TMIC seem to be the best mods so far to do to this car.
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Old 04-05-2018, 10:02 PM   #146
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Originally Posted by gn4rwhals View Post
I literally lol'd

Seriously though, I'm having a hard time justifying the 10-15whp of the TGV/EGR delete combo too, let alone the EGR delete by itself.

Flex Fuel, 3-port, J-Pipe, and TMIC seem to be the best mods so far to do to this car.
Iím just leaving it.

Deleting them doesnít save you carbon cleaning anyways
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Old 04-05-2018, 10:09 PM   #147
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I’m just leaving it.

Deleting them doesn’t save you carbon cleaning anyways
EGR deletes alone definitely not enough for significant carbon build-up avoidance. However them paired with an AOS or catch-can setup is a vast improvement. Highly recommend looking into them.

Both are going to be one of the first mods I install when I order my WRX this year.
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Old 04-06-2018, 06:30 AM   #148
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However them paired with an AOS or catch-can setup is a vast improvement.
No they wonít.

Catch cans are also a waste on a show room new motor. That thing is already tight, if youíre having blow by problems at sub like 100k miles youíve got a bigger problem than blow by.


At 77k, 50k of those tuned, my intercooler has barely a thin film of oil on the inlet side.

The carbon comes primarily from the sulfated ash in the oil trickling down the valve stem paste the seals and baking/caking onto the valve.

EGR and catch can might buy a few thousand miles more between carbon cleaning but thereís only one thing that will stop it: Water Meth Injection.
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Old 04-06-2018, 07:52 AM   #149
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I just did mine over the weekend (TGV and EGR deletes). Waiting for a new O2 sensor to go out and finalize the tune.

But man ....... taking off the EGR system was sure a pain in the azz for me! I'm pretty mechanically inclined, but for some reason, the EGR delete took way too much time for me. What should have been a 20 minute operation (I was already doing a bunch of other stuff to the car) took me about an hour and got radiator fluid everywhere. Felt like an amateur doing it ......
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Old 04-06-2018, 09:41 AM   #150
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No they won’t.

Catch cans are also a waste on a show room new motor. That thing is already tight, if you’re having blow by problems at sub like 100k miles you’ve got a bigger problem than blow by.


At 77k, 50k of those tuned, my intercooler has barely a thin film of oil on the inlet side.

The carbon comes primarily from the sulfated ash in the oil trickling down the valve stem paste the seals and baking/caking onto the valve.

EGR and catch can might buy a few thousand miles more between carbon cleaning but there’s only one thing that will stop it: Water Meth Injection.
FYI, blow-by isn't specifically a problem but a natural expected occurrence as part of the combustion process in both port-injected and direct-injected engines due to pressure build-up in the crankcase needing to be ventilated out through the PCV and CCV. It's just that, unlike port-injected engines, DI engines don't happen to wash over the valve stems with fresh fuel to clean it up (hence the carbon build-up). Of course EGR systems with their effect of exhaust being put back into the intake (where only fresh air should go) definitely doesn't help either. It may or may not be a lot but never-the-less it's there and has been proven to significantly add to carbon-build in DI engines due to the lack of fuel flowing over the valve stems.

Savagegeese goes over DI engines and talks about all this on his YT channel and specifically mentions catch-cans and air-oil separators as one of the methods of avoidance for carbon build-up (along with checking NOACK levels of your oil and other things). Definitely recommend a view as it is very informative.


Sidenote: Also Phatbotti tuning (a very well-respected tuner in the scene) specifically recommend these parts (AOS + EGR deletes) for the WRX 2015+ and talks about how they both help eliminate carbon build-up levels.

https://phatbottituning.com/2015%2B-wrx-suggested-parts
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