I have a 1999 454 mpi procharged with dana headers all though procharger says its not needed has anyone done this? and wheres a good place to send it off to

There are a few places. Do a search and you will find alot of info. DO NOT run that thing hard until you get your fuel and ecu right. I sent mine to Precision Marine. It's going to cost you $350 bucks but that's cheaper than an engine.

Call Mark at Percision Marine. Very good guy and a fast turn around on programming. I agree with the post above. Get it done.