Originally posted by ProZach626
Fuel type doesn't have any effect on power output unless the motor is tuned for it.
That's not true, is it?
For example a Diesel car will run on filtered chip fat without any tuning at all, and will have reduced power by around 10%.
There are differences between regular unleaded petrol and Super Unleaded petrol, as well.
Bio-fuel engines also run very differently depending on what type of fuel you use, without any alterations to the engine itself. (Think primarily about the Koenigsegg (spelling? lol) CCXR)