I have heard discussions on people putting blow off valves on the turbo, just for the noise. It has no actual performance increase, that I know of.

I have however discovered by swapping out the stock air filter, not permanently, but with an advaced auto parts air filter, you can hear the turbo chirp, at least on my car you can.

I wouldn't recommend leaving the aftermarket air filter on though, many discussions why you shouldn't, but it is fun to ride beside people, stomp it and let the turbo scream in their car.

I have also removed a bunch of unnecessary EGR vacuum, also, but you might not have to.

Anyways, I just thought this might be an interesting topic, rather than me rambling on about the downs of the vehicles and random questions.

Thanks for all comments, opinions, or thoughts!!

Its an S class, I want to hear as little of the engine as possible.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

Smell that rice a cookin'

What's wrong with an Advance filter? Not a K&N or anything... Half the filters on my car are from Advance. Isn't it the same as an original? Close enough?

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~Michael S.~
Past cars:

1986 300SDL
1987 300SDL
1982 240D
1982 300SD


Current:

1987 300SDL

Probably nothing, a filter is a filter.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

i laughed so hard when i saw this.

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Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac?

As long as they would add one additional commandment for you to keep thy religion to thyself.
George Carlin (Wonder where he is now..)

1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won.

pearl black 1983 240d 4speed (Converted!@$$%) atleast the tranny was rebuilt.

Thats called surge. All of the 617's with a T3 do it, its just the stock air filter muffles it very well.

blowoff valve? diesel? wtf?

besides the silliness of wanting that sound coming out of your diesel, theres nothing to "blow off"- no throttle = no backpressure. even if you installed a bov you wouldnt get that sound. thank god.

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84 300SD ODO broken at 277k
02 Jetta TDI
KHS roady, stumpy hardtail- powered by carbohydrates
OBK56

You probably would get some noise since there is pressure in the manifold. But it wouldn't do you any good; in fact it will actually slightly hurt your performance because the boost will drop more rapidly when you let off.

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Dale

http://i52.photobucket.com/albums/g1...MG_2277sig.jpg

1990 300D 2.5 Turbo -155k
2000 E430 - 103k
2014 Jeep Grand Cherokee Ecodiesel 4x4 - 11k
2014 VW Passat TDI SE - 7k Bro's Diesel
2006 E320 CDI - 128k Pop's Benz

Pre-glow - A moment of silence in honor of Rudolph Diesel

there may be some manifold pressure, but isnt the purpose of a bov to vent manifold pressure when the turbo is suddenly dead-heading against a closed throttle? i dont think i could dead-head the turbo in my 617- unless i just broke the camshaft and all my intake valves were closed. course, a blow off wont do me much good then
if you want an entertaining read, head over to tdiclub.com and find one of many threads about the ricer who just bought a TDI and starts talking bov

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84 300SD ODO broken at 277k
02 Jetta TDI
KHS roady, stumpy hardtail- powered by carbohydrates
OBK56

The puralotor and the like airfilters are crap. Probably ok for a non turbo.

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http://superturbodiesel.com/images/sig.04.10.jpg
1995 E420 Schwarz
1995 E300 Weiss
#1987 300D Sturmmachine
#1991 300D Nearly Perfect
#1994 E320 Cabriolet
#1995 E320 Touring
#1985 300D Sedan
OBK #42