[r33_RGSport]

Béhème, BMS hasn't decided whether to include the EWG/FF harness yet on the JB4 Stage 2.
You don't necessarily need the EWG/FF harness to run the EWG firmware, but if you want to maximize the tune capacity, those 2 harness will helps. EWG harness to control the Wastegate control on when to open to control the max boost and FF harness to control how much fuel going in to the motor in relative to the amount of boost so the engine doesn't run too lean.
Another consideration of mods if you are going to max out the boost, here are the list.
- Catless dp for faster spool up
- Chargepipe to avoid a blow up on the stock pipe due to higher boost and left you stranded
- FMIC, I know where you are probably never get really hot, but it does helps to maintain air temp going into the motor