Running gull force 10 bio fuel ?

[postfach]

You need to remember (or maybe you're only finding out now as you read this) that the chemical potential energy per kg of ethanol is only about 65% of that of petrol, so if you were running ONLY ethanol, you'd need to use 55% more fuel to make the same horsepower as you did running petrol.

This means (assuming I calculated it correctly, and I'm pretty sure I did) that a petrol-ethanol blend with 10% ethanol has 96% of the potential energy/kg of straight petrol, so you need to use around 4% more fuel (by weight, not volume - but I won't get into that) to get the same power output.

Pretty much means nothing without a tune though, your ecu will respond to what information its getting from the 02 sensor, and since the car is setup for regular petrol, it will probably adjust incorrectly.

In short, with the ecu tuned for an ethanol blend, you'll use more fuel for the same power, with an ecu tuned for petrol, you'll use more fuel, and possibly take a minuscule performance hit. Either way you probably won't be able to tell the difference other than the smell and the illusion of baby foxes spewing forth from your exhaust and saving the planet.

Actual results may vary, if pain persists, please see your doctor and cease using the product immediately.