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Hey smart tech guys: Is there a simple way for us racers to drain or pump out our fuel tanks so that we can run 91 pump gas and or 100 race gas and be sure the 91 is out? This way we can run 2 ecus with different tunes.
Hey smart tech guys: Is there a simple way for us racers to drain or pump out our fuel tanks so that we can run 91 pump gas and or 100 race gas and be sure the 91 is out? This way we can run 2 ecus with different tunes.
Thanks!
There is no need to purge the fuel IMO, there are multiple additives on the market that you could use to bring the octane number up to the desired level, tolulene & xylene come to mind.
Two ECUs would be a difficult proposition, it would be easier to flash the ECU with the more aggresive tune for racing and then reload the factory tune when done if you were so inclined.
Unless you are running a very high compression ratio or lots of boost there isn't much advantage to running race fuel.