sir dieseldude, could you share your knowledge about commonrail fuel injection, I just installed a plug and play gizmo that connects to the fuel rail sensor. and this gizmo is supposed to extract more power from the engine. it claims that it will not increase the pressure but just add more fuel. Since your gizmo is wired to the rail pressure sensor, it probably alters the pressure signal to the ECU, fooling the ECU that rail prssure is lower than required. The ECU compensates either by increasing fuel pressure or by increasing injector metering time.

My question is do you see any problems that could arise from my modification. Yes, more fuel = more power, but with higher combustion pressures and heat. Another thing, your vehicle warranty may be void if Mitubishi sees this.

One thing I observed that im very happy with is after I installed the gizmo is its less noisy than before. its for a mitsubishi 4m41 commonrail engine, I'm glad you're happy with this device.