dewilmoth

I'm wondering if the sport button uses a completely different set of maps in the ECU (fuel, timing, etc.), or if it only adjusts boost and throttle sensitivity? The reason I ask is because I'm wondering if the sport button can be used to switch between two different tunes, for example E85 and 91 octane. I kinda doubt it considering I've never heard of anyone doing that, but it would be very nice to be able to have a tune for two different fuels already loaded in the car. Any insight would be appreciated.

Kevin

It's the load request duration, which in turn allows more boost to build longer, the higher load that is generated usually also moves the timing map. Unless you have knock detection >yield timing retard.

For myself it's just easier to flash the correct map into the ECU.. Race gas, 91, 93, valet file or XYZ..