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Old 10-30-2000, 10:37 PM
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Join Date: Jul 1999
Location: Youngstown, OH
Posts: 150
I found this site searching around for a manual for the Bosch fuel injection for my 1991 300E2.6 because I have some drivability problems. I've noticed similar postins here and thought you all would be interested. I would like some feedback from some MB Mechanics please.

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Old 10-31-2000, 03:05 PM
Posts: n/a
I've seen that site too, and been intrigued by it. I live in New Zealand and there's a NZ garage that has the Interject kit, but it's a long way away from me. As a 280E (W123) owner, I'd also be very interested in a tech's opinions on Interject's methods of tuning K-jets.

1977 W123 280E
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Old 10-31-2000, 09:10 PM
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The Interject site can be quite erratic ... it appears to be down at the moment. But here's another site about mapping K-jet engines. It's in England, and to quote:

" ...the K/KE-Jetronic system is a device which has no facility for fuel or timing alterations at specific engine speeds and loads.

"If you make any changes then you make them across the entire speed and load range. As any engine tuner will tell you, engines rarely need 'across the board' changes to produce optimum results. They need a fine balance of engine speed-related and load-related changes, and this applies whether the engine is carburettor controlled, electronically controlled or controlled by K and KE-Jetronic.

"K-Star gives you this 'fine tuning' capability."


"Many cars respond to fuel enriching at certain engine speeds and loads, and perform better as a result. For modified engines (with gasflowed cylinder heads and/or different camshafts) this selective enrichment is essential to eliminate the poor idling, bad starting and overlean high speed running which often results.

It is in this scenario where K-Star comes into its own, allowing a degree of 'fine tuning' not normally possible. Ignition timing changes at various rpm points can produce spectacular results in terms of engine output, and K-Star allows you to make these changes at 500rpm increments across the entire engine rpm range.

The result of these accumulated values across the rpm and load range makes the completed 'map' on which the engine will run, once it has been downloaded to a fitted K-Star unit.

The address is:

Comments from M-B techs?

Finally, there's a site from Neutronics, who offer a series of specialized controllers designed to convert open-loop Bosch (CIS) fuel injected vehicles to closed-loop feedback control vehicles.

This upgrade kit is particularly intended for the Mercedes Benz 280E, 1977-79, and 450E, 1976-79. Vehicle coverage also includes imported "gray market" cars, which "can regain considerable emissions performance efficiency through the installation of this product."


Again, comments from techs?

1977 W123 280E
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Old 10-31-2000, 11:18 PM
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Join Date: Apr 2000
Posts: 412
Hey Intruder that Fuel Injection Web site Rules. I am in the process of adding it to my favorite places. If one of you Mercedes Shop People see this please add this to the links. I ALWAYS checkout the links on a web site it usually gets my to somewhere in cyberspace that I want to be. Mercedes Shop is Still the King.
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