[njdctm3]

what would i need to change to run e85 (like 30% - 50%) in my 2013 328i with a JB4? The mods i have right now go as follows... injen CAI, Catless DP, mid pipe cat and res delete, m performance exhaust and Bootmod3 tune. What would the gains be?

[Stubok]

As long as you're running a Back end flash you will run a safe AF ratio.

Also you should replace your LPFP with with a Stage 2 Pump that's capable of moving more fuel and is okay with Ethanol.

Previous history with Ethanol has not been good. So it's risky. But mostly I believe that was because of very lean AF ratio, excess heat and detonation.

[M2_MEDUSA]

Originally Posted by Heuvelmancole

what would i need to change to run e85 (like 30% - 50%) in my 2013 328i with a JB4? The mods i have right now go as follows... injen CAI, Catless DP, mid pipe cat and res delete, m performance exhaust and Bootmod3 tune. What would the gains be?

Stage 2 lpfp. Without it your stock one will fail get a walbro stage 2 from fuel it