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How much boost do the new cdi motors make?

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Old 09-12-2007, 08:13 PM
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08 ML320CDI
How much boost do the new cdi motors make?

Just as the title says... How much boost do the new cdi motors make?
Has anyone hooked a boost guage an verified?
Does anyone know what kind of EGT's these motors run at full tilt?
Just wondering how conservative the factory tune is. (or how much is left on the table)
Thanks
Dieselfan
Old 09-13-2007, 04:06 AM
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1982 300D VNT, 1980 240D 3.0T, 1982 300TD
I'm interested in the boost pressure as well.

I've searched the internet for hours and haven't found a single answer.
Old 09-13-2007, 07:47 AM
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Same here.

I know the BMW 535d produces 41.3 psi, stock. So,...
Old 09-13-2007, 11:12 AM
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Yes, pretty conservative, like would be expected of a Mercedes-Benz engine.

2.0 bar or 29 psi

Some articles which mention it:

http://www.trucktrend.com/roadtests/...s_benz_320_cdi

http://www.dieselpowermag.com/news/0...es_diesel.html
Old 09-14-2007, 04:36 AM
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29psi?

Still, that's higher than I thought it would be. I was thinking it was around 20psi.

How about the Sprinter's 2.7L engine, what is the boost on it?
Old 09-14-2007, 07:03 AM
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08 ML320CDI
2bar or 29.4 lbs. is fairly high (stock). I also am suprised that it is that high. I is a small motor though so they must need the boost to make the #'s. I am sure it will be a little while but I would love to stick a fueling computer on this thing and up the boost. I imagine that 275-290 hp / 500-550 lb/ft wouldn't be too hard to achieve.
I would love an outlook monitor now on the vehicle to see all the sensors. I would love to watch in realtime the EGT's, Boost, Trans temps etc.
Anyone know of a way to see these #s without going the route of installing mechanical sending units, are there sensors on this vehicle that one could intercept thru the OBD ports or something like they do on 3/4ton domestic diesels?
Dieselfan

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