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Edit. This was a reply to MotoX85, but somehow quote button didn`t work. He must be on GP fuel.
There's much more to using different fuel than just putting it in the tank as you point out, exhausts, ECU and compression ratios etc
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Of course if they all ran to the same regs , it wouldn't be an issue anywhere.
We had a motor that had to have U4 in it, £4.80 a litre, thing was a missile, you couldn't run it on pump gas, we did accidentally once and it felt like I was pulling a trailer
Would be very interested to see the final Dyno numbers from star with GP/AMA fuel. I can dream can't I?
Pit Row
hmmmmmm
As for Star's situation, as they mentioned they didn't know about the fuel until it was too late to swap over, but apparently some teams were informed. Then for Glen Helen, anyone was allowed to run US fuel. But, it seemed to be decided late enough or not clarified at the previous round so many teams just stuck with what they had. If you didn't have the data or help to switch the mapping for fuels or time to dyno this week, it would be a bit pointless to switch fuel. So it's definitely an odd situation because only a few teams could take advantage of the fuel swap between rounds, while others weren't in the position to gain anything.
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