I have a 2005 srt-4 wiht a K&N CAI right now. I am looking at getting a stage 1 pcm but iv been reading that they arent really useful until you up the boost past 16psi. Since my boost levels are stock i was wondering if it was worth it. I was also thinking about getting a 3" downpipe but leaving the rest of the exhuast stock. So my qustion here is, is it worth it to get a downpipe and stage 1 when i havent touched the boost levels? suggestions?

 

stage 1 is a start, then add some more modifications from there as always its good to know your intentions, what are you looking to get out of the car and what are you willing to spend.
as far as boost, neither your fuel system or stock turbo, your not good past about 18-19psi anyhow.