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      10-25-2019, 02:36 AM   #1
rickyf10
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Air Filter replace and maf sensor clean

So I decided to upgrade my intake part with limited budget. A high flow filter would be my first choice
From what I know, oiled filters may cause maf problem, so what I got is afe pro dry s filter.
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Driver side air intake box got stuck in the engine bay for some reason, I took 6 screws out and managed to take both charcoal filter and air filter out. Itís tough one honestly btw, the large screw that holds the driver side air box is t40 (should be t27 from I know) which is really weird
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Good bye dirty filter
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At this point I also took out maf sensors to see how dirty they were cuz my idle sometimes is erratic. There are some oil on the plastic cover (where is the oil from????)
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I found oil in the intake tube also. Can someone explain this?
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It took me 1hr or so to finish all this (driver side air intake box was really a pain )
I now can hear my turbo spool and feel slightly quicker throttle response
For power gain, I donít know since I donít really wanna spend $$$ on dyno for some numeric data
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      10-25-2019, 03:21 AM   #2
BeachM5nster
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Quote:
Originally Posted by rickyf10 View Post
So I decided to upgrade my intake part with limited budget. A high flow filter would be my first choice
From what I know, oiled filters may cause maf problem, so what I got is afe pro dry s filter.
Attachment 2166384
Driver side air intake box got stuck in the engine bay for some reason, I took 6 screws out and managed to take both charcoal filter and air filter out. Itís tough one honestly btw, the large screw that holds the driver side air box is t40 (should be t27 from I know) which is really weird
Attachment 2166385
Good bye dirty filter
Attachment 2166386
At this point I also took out maf sensors to see how dirty they were cuz my idle sometimes is erratic. There are some oil on the plastic cover (where is the oil from????)
Attachment 2166387
Attachment 2166388
I found oil in the intake tube also. Can someone explain this?
Attachment 2166389

It took me 1hr or so to finish all this (driver side air intake box was really a pain )
I now can hear my turbo spool and feel slightly quicker throttle response
For power gain, I donít know since I donít really wanna spend $$$ on dyno for some numeric data
yea mine had oily residue inside the piping too. not as heavy as yours looks though, i have no idea why..but someone will know.

and yea those non-euro spec charcoals suffocate the intake pretty good

congrats on your first step on a very slippery slope! lol
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      10-25-2019, 02:51 PM   #3
arucano
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There are two possible sources for the oil. One is the crank case breather system or a leaking turbo seal. The former is the more likely one given that it is also found on the air flow sensor.
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      10-26-2019, 05:55 PM   #4
rickyf10
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Quote:
Originally Posted by arucano View Post
There are two possible sources for the oil. One is the crank case breather system or a leaking turbo seal. The former is the more likely one given that it is also found on the air flow sensor.
Thanks for explanation!
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      10-26-2019, 05:58 PM   #5
rickyf10
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Update: just got cel light on. No idrive warning. So I checked the code and it was 118011 and 118111, both are mixture control: mixture too rich.
They remove easily since they are not present when I pull over
(My car is currently running on stage 1)
Is it related to air filter change? Or should I ignore it?
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      10-27-2019, 10:25 AM   #6
94jedi
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I have the same filters! Oddly, no oil in my intake though; didn't clean the mafs either although maybe I should give that a shot next time I'm in there.
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