I don't think its possible, but can I run a MBC on a completely stock S4? I might do piggies but i dont know if the MBc is possible or not.

 

To get any performance gain from an MBC you have to run it stand alone and should get a GIAC-x chip and TCD (diode mod). When running it parallel it just clips boost spikes. Without the chip (giac-x works best) the ECU wont cope well or at all, and without the Throttle Cut Defender you may experience throttle cut.

If you have k03's the only real use for an MBC is to completely max out your turbos (past what a chip requests). Which will most often leads to this: http://www.youtube.com/watch?v=RhOMp...eature=related

 

hmmm well i dont want that so ill stay away from that idea