Originally Posted by jzingerman
I have been told that n55's are notorious for having problems.
1. Who told you this? That is a crazy, baseless statement.
2. You are running JB4 Stage 2 with ISO, E85 and a CAI. Change the charge pipe, secure all fittings, (including the Jb4 harness itself - take connectors off/on as they have been known to collect condensation and produce errors).
The n55 has been extremely reliable; you need to tune/mod in careful steps. The modifications you have installed increased your stock boost from 8-11 psi (at WOT) to 14-18 psi! If you are still using the stock charge pipe, you are asking for trouble as it WILL crack.
Who ever told you to not swap that out is a flat out idiot - run from them and never seek their advice again.