I Found 99 Octane in Northern Ireland ( Just outside Newry)
Discussion
Had a mate of mine run it on his stage 4.25 GTR and he says it ran perfect on his 99 oct map, i also have a GTR R35 which is also stage 4.25 and mine also has a 99 octane map i can run so i intend to fill up on the weekend and switch the map to the 99, the system will quickly tell me if there is any pre ignition going on when put the vehicle under load, the garage is known locally to have the best fuel, ill keep you posted as to how it all goes
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