Originally Posted by Robert Andrew

That instruction from the naturally aspirated manual is a gross over simplification.
The MAP sensor on an SRT6 is beneath and slightly forward and to the left of the throttle body. After removing the air cleaners and the throttle body, the temperature sensor, and the rubber Y on the intercooler, you can barely get a 1/4" wrench on the rear bolt, and turn it 1/4 turn at a time, then you must have a 1/4" drive universal joint, long extension, and a 1/4" socket to loosen the front bolt. It is much easier to remove the MAP sensor, then remove the connector. Don't break the small retaning clip on the connector. Then pull straight up on the MAP sensor, to remove it. The plastic nipple will most likely break off in the hole, and to remove it, you should get a long, slender screw driver and push it down through the hole, into the intercooler, where you can retrieve it with your fingers. There is nowhere for it to go when it falls into the intercooler, so don't worry about it getting lost in the bowels of your engine. You should have a telescopic magnet to remove the front bolt, because you can't get your fingers on it. When inserting the new MAP sensor, take great care to make sure the plastic nipple is inserted in the hole on the intercooler. To start the front bolt, you need one of those flexible, three fingered pick up tools, or a piece of plastic tubing that will fit snugly over the head of the bolt and allow you to reach in and start the bolt. It is very, very, very easy to break off the plastic nipple on the new MAP sensor, so be very careful and don't force it. When you replace the temperature sensor, clean it with some spray MAP sensor cleaner, not carburetor cleaner. It's available at your auto parts supplier. If I didn't already mention it, it is very, very, very easy to break off the nipple, thereby ruining your new MAP sensor. The job can be done in 3-4 hours if everything goes smoothly, but in my world it never goes smoothly. This is a frustrating job, but not incredibly technical.

Everyone suggests that you use only a Bosch, or OEM Mercedes sensors in our engines.