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  • ignition timing
Chart of ignition advance gained on E85 over 99 RON pump fuel, showing identical timing below 100 kPa and four to five degrees more advance above it
Posted inEngine Management

What E85 Actually Buys: Boost, Timing, and Where the Advantage Vanishes

Ask what E85 is worth on a big turbo engine and you get one of two answers. Either it is magic, or it is 30% more fuel for 30% more…
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