This is what I don't understand: Some of you guys who have MP3s and P5s and are running aftermarket turbo system are all down on MSP owners for upping their boost. And you are proud how you can "safely" run 5psi of boost! Ooooh 5psi!! Look out!! Geezus H christ, our MSPs come from the factory running more then that! Plus, you guys get hassle of tweaking your maps constantly to keep up with changing conditions. Hey, lets all get aftermarket Engine Management systems so we get into the never-ending cycle of tuning the fuel maps!! Yeah!! And then there is the plethora of parts you guys seem to need to buy just to run 5psi.
I realize there are others who are running more then 5psi with aftermarket turbos, this is more for the guys who seem to be stuck on the 5psi bandwagon. I'm not trying to bust your guys' balls, but give it a rest. I can turn my boost down to 5psi and run safely forever! But what fun would that be?
Bother Mazda and Callaway said our MSPs would run fine at 6.9psi from the factory. They even gave us a factory warranty to back up the statement.
Lastly, to me, it looks like the biggest mistake Mspeedchica3.5 made was using a FPR on a flashed car (if in fact the PCM had been flashed). A leaner condition due to the Fuel Pressure Reducer, combined with the increased timing of the PCM Flash is not a good combination IMO. But until an analysis is made of the blown engine, none of you internet troubleshooters knows for sure what caused the failure.