Originally Posted by golfdude
What are the specific problems with the Crossfire that makes it resistant to accepting a turbo kit? Many have mentioned the ECU...I would like to have specific reasons for what needs to be resolved within the ECU to make the turbo kit work properly. I have a company who says they can turbo my car and give it 400 rwhp on a single turbo, plus get it done in roughly 3 weeks, for $6,000 - $7,000. I would like this thread to focus on highly specific problems with making the Crossfire work with a turbo. Please feel free to use technical jargon. The goal is to be able to show this thread to my builders to show them that this car is a beast to tune. I have consistently warned the company that this vehicle is not easy to work with, but they are not worried because they mentioned they would be using a stand-alone unit. I don't know anything about ECU stuff, but the builders do. Thanks.
Simple. Turbos require more fuel and require major engine timing adjustments. Nobody that I have found has the source code for the ECU to adjust the timing or the FMU to subsequently adjust the Fuel/Air ratio except for Kleeman, Renntech & Carlsson.
IMO the only way they will be able to get your engine to run at all with the installation of a turbo is to gain access to this software or rig a piggyback system.
If these guys have never worked with a Mercedes engine electronics, they're going to have one hell of a time...