If I was to upgrade my stock fuel pump to the 55 pump, would the guys at eurocharged be able to add some hp and torque?

 

No, the stocker with a tune is all you need even with every mod you could do to that thing.

 

The pump pressure with the OEM is @56-60 pounds, PLENTY for the N/A engine.
The reason for the 55 upgrade on the 6's is that when boost is increased, you eventually reach the area where the AFR's start to go to the lean side, then you add bigger injectors which in turn need the bigger pump. ( that's from what I read on the forum, I don't have an SRT6 )

 

You need to think of the engine as a properly sized system of parts all feeding a 3.2 liter air pump. The compression ratio and the cams determine what it can use, throttle body controls the air flow in and the fuel pump/nozzles control how much fuel.


These represent maximums and computer controls where you are in that envelope. You have to figure that MB engineers knew what they were doing in selecting the operating points inside that envelope though they had to consider things other than pure power e.g.:
Cost
MPG
Torque curve
Emissions
Warranties
Accessories
Model positioning


Point is that the engine is a system of parts and rarely can you just change one piece for a material gain.

 

thanks for the insight. I am coming from a Twin Turbo platform. Fueling was our only bottle neck. I was thinking that without forced induction, there would be no need for the fuel pump, but it comes up as an upgrade on needswings for the NA as well as the SRT6. I was curious what a car like mine would do with all that fuel????

I also owned a jeep that had single nozzle injectors that could be upgrade to multi nozzle injectors for improved atomization. Are our injectors a single or multi hole injectors.