whats wrong with 87 octane? thats whole new can of worms lol.
but basically, unless your advancing the timing beyond stock or run high compression/turbo you wont benefit from higher octane fuel. i actually see poorer fuel mileage with 93 octane as opposed to 87 octane...so my choice is clear.
well...i really wanted to jus check my timing and if it is 10 then jus up it to 12...i heard that some sentras come with their timing a lil low..so i jus wanted to make sure i had the best, safest timing... might not be a big diff but should help a lil when i get my iridium sparks...later on i will advance it to 15 and run 93 octane...thanks for evryones input...pz