*Newb question*.I was talking to some people friday night, and they told me as I was about to fill up gas that I should put in higher octane gas. They claimed it would reduce the chances of a small explosion in the rotary chamber that would spin the rotaries the other way causing me to blow my engine. Just wanted to know if this is true or not. thanks.

 

You drive an FD? Then yes, without question run the highest octane you can get. The rotors won't actually spin the other way, but detonation can very easily destroy a turbo rotary if it's out of tune.

 

Your car does need a certain octane of fuel to burn properly through it's combustion cycle. If the octane is too low, and the compression of the engine too high, then the fuel will explode prematurely, resulting what is commonly known as engine knocking, or pinging. This can typically be heard at partial throttle when the car is under load, like when it's going up a hill. I run nothing lower than 93,maybe 92 if I have no choice.

 

Ok, the previous owner put in a pettit ECU I'm not sure when it was tuned if it ever was.

 

DO NOT take any chances with these cars, find out if it tuned and if it's tuned correctly with the current mods.