RE:RE:RE:RE:RE:RE:RE:On the brink of legalization maritimedreamer wrote: I'm a big car person....... for a day to day on Supreme vs regular.... you will see or feel very slight differences in throttle response and acceleration...... but when you start to tune the car..... i probably have a 100 HP difference between a 91 octane and say a 93.....just an FYI : )
This is just not true.
Higher octane can actually produce lower horsepower. Higher Octane fuels are only required for engines with higher compression ratios and/or those that are designed to run very hot. It just happens that high compression engines can produce more power and certainly more torque, but this is a consequence of the design - not from the octane in the fuel which is there to prevent detonation in these types of engines. Never mind that the difference between a 91 and 93 octane is vanishingly small. High octane fuels are 120 or more.
You can create more horsepower from certain fuel additives, but you will find none of these additives in pump gas - regular or supreme. Expect to pay upwards of $7 a liter for a race fuel that will increase horsepower by a mere 2%-3% and would be not only illegal in a street legal car, but would also likely ruin it. For you to get 100hp more by using such a fuel you would have to start with about 5000hp.
Have a look at VP Fuels MR PRO6 fuel as an example to get an idea and stop talking out your p’tute.
Car guy – LOL!