I just removed all the vacuum lines, and switch's related to the EGR and ARV. So I got rid of that black boa running across the front of the engine, and a spiders web of vacuum lines below the air cleaner. It took about 15 minutes and I had a pile of useless crap on the ground when I was done. The engine bay looks much cleaner, and there are less vacuum parts to leak! Which as these cars age is a good thing! Now I just need to order the three way connector(601-078-06-45), the Golf tee's I have blocking the 5 way look like crap.

Every SDL owner should do this, its so simple. Throw in one of Brians EGR kids and that side of the engine starts to look like it should. I doubt you will see any performance difference by getting rid of the ARV, but its simply not needed anymore. All of the vacuum connectors were crispy, so it was only a matter of time before I would have had a new vacuum leak to track down.

Anyone know if its possible to totaly get rid of the ARV itself? It looks like its part of the turbo housing, I don't think a simple plate will work this time.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

I have that same box of parts out in the garage. I already have the 3 way connector, I don't golf. I'm not sure if Brian wants any of his kids under your hood though.

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

Now that you have all that stuff gone, you should remove the airflow sensor as well.

Please tell us how and I will.

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

Supposedly the intake snorkel (flex tube) from a 300D or 300SD fits perfectly in place.

Air mass sensor? I can't find airflow sensor. I can't get a picture of the air mass sensor to come up under buy parts.

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1987 300TD 309, xxx 2.8.2014 10,000 mile OCI


Be careful of the toes you step on today, as they may be connected to the ass you have to kiss tomorrow. anonymous

“Be who you are and say what you feel, because those who mind don’t matter, and those who matter won’t mind.” Dr. Seuss

Yes. Under the air cleaner. Big metal box.

Last I heard GSXR didn't really see any dyno gains with it gone. I don't really want to mess with the intake to involved.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Could somebody please clarify exactly what parts you would be removing and what their purposes are? What are the benefits other than visual for removing this stuff?

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1963 Ford F100 - Cummins Swap?
1985 Mercedes 300SD - 210K
1992 Ford Festiva - 92K
2001 Ninja 250 - 8K

Yeah I wondered the same thing awhile back about the airflow sensor, mine has been in the whole time but my vacuum bits are already gone. I thought about blocking it open but decided against it.

Whats the consensus on it? keep it or lose it?

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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

I don't really see a benifit. The air intake is pretty big on these cars, I don't think anything is lost.

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1999 SL500
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Any restriction is a bad thing. It may not add much resistance but it still has some.