We have a 2000 EX auto and get 20-21 in the city and 24 highway ave 70-75mph.

The car is designed to run on regular gas. You wont benefit from using
higher octane unless you advance the timing a few degrees. Then you will
have to use higher octane but you will get better performance and gas
mileage.

There was an article written by Oscar Jackson (jackson racing) in the
spring issue of "honda tuning" magazine (I think it was spring issue).

He said honda distributors have a negative, neutral and positive setting
for the timing. Usually they are set for negative or neutral to run on
regular gas.

If set on the "+" setting, you end up advancing the timing several degrees
and have to use Super unleaded. The result however was a noticeable gain
in Horsepower and torque and increased fuel mileage. The article tested
the theory on a 2000 CRV and they got about 4mpg increase, more than enough
to offset the increased cost of the fuel. (this was done BEFORE gas prices
went nuts though).

Ive been wanting to try it but forgot to buy the magazine and I think its
off of store shelves. Not sure. The article was burried in the back.



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