The fact of the matter is that they are bosch fuel injectors, and it will not be hard to find a higher flowing fuel injector. Thus the PCM sees so much fuel initally, but be able to run more boost in the end as far as fuel is concerned. there is no need to go into the tank to work on the FPR. Fuel is rarely a serious issue until over 15lbs of boost. There are minimal mods to take care of that. If you run more than 5 psi, you need to start looking at compression ratios, head strength, and bottom end strength.

on a side note there are 2 srt-6 engines on ebay for 1500!!

*EDIT*...I may ramble at times, but what I was saying is that the stock PCM can handle it.

*EDIT*...Information below is straight from tech connect, our (chrysler's) manuals