After much research, I finally decided to install a Bully Dog "rapid power" chip in my 2005 E320CDI. All I can say is it took my awesome car and made it awesomer. I see a 10% improvement immediately in mileage (both on the car computer and my Scangauge II, as well as confirming accuracy at fillup). And the power increase is huge.

It clearly is only manipulating fuel rail pressure because that is the only hookup for the unit, but it does what it says.

The exhaust smell is improved too. .....To back up...I run strictly homemade BD. The 83SD has a great exhaust smell running BD...as many on the forum are aware. The CDI running BD has a much more pungent odor...to me it's still better than D2 exhaust, but not as pleasant as the 83. The CDI seems to have a less pungent odor with the chip.

Disclaimer...I have no ties to Bully Dog whatsoever.

odo reads 151k. The last 21k are strictly BD (with a small amount of HHO blended in the cold months), and the last 1k or so with the chip.

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Mark in MA
05 MB E320CDI 402k Granite Grey Metallic
05 MB E320CDI 267k Black
05 MB E320CDI 232k White
05 MB E320CDI 209k Tectite Grey
99 Dodge 2500 Cummins 5sp 148k
62 Jeep CJ-6 120k

What mileage numbers are you seeing pre-chip and post-chipping the CDI?

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Regards,
Ian White

1995 E300 Diesel w124 OM606
2014 E550 w212 M278 biturbo

2001 BMW 740i E38 M62 (past)
1981 300SD w126 OM617 (past)

I was seeing 28ish before, and now it's 30 or north in town, and 32 on the highway.

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Mark in MA
05 MB E320CDI 402k Granite Grey Metallic
05 MB E320CDI 267k Black
05 MB E320CDI 232k White
05 MB E320CDI 209k Tectite Grey
99 Dodge 2500 Cummins 5sp 148k
62 Jeep CJ-6 120k

For that matter, waht is the power increase? I take it you're saying it was worth the money spent?

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TC
Current stable:
- 2004 Mazda RALLYWANKEL
- 2007 Saturn sky redline
- 2004 Explorer...under surgery.

Past: 135i, GTI, 300E, 300SD, 300SD, Stealth

I don't have easy access to a dyno, so I can't say what the HP was before or after. But very unscientifically, I can say the difference is huge.

Running homemade BD, the increase in MPG will take me about 6 years to recoup the investment, but someone running $4.00 D2 might recoup in a year or two.

The fun factor alone made it worth my investment.

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Mark in MA
05 MB E320CDI 402k Granite Grey Metallic
05 MB E320CDI 267k Black
05 MB E320CDI 232k White
05 MB E320CDI 209k Tectite Grey
99 Dodge 2500 Cummins 5sp 148k
62 Jeep CJ-6 120k

IIRC its not that much 20-30hp?

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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