Originally posted by rage
Also, I am noticing a very, VERY slight hesitation when accelerating. It seems to do this in all gears, at about 2500k rpm. It also seems to get better when the car gets warm, and eventually go away. I didn't always do this (but it is getting colder at night).
Your car has absolutely ZERO use for higher octane fuel, and all octane booster is going to do is blow out your expensive O2 sensors and possibly even clog your catalytic converter.
The reason your car is hesitating is because the ignition timing is set specifically for 87 octane, yet now you are running a much higher octane. The ignition timing is thrown off, and as a result the engine won't run nearly as efficiently and you will actually LOSE power, overall performance, and mileage.
This is what happens when you put high octane fuel in an Accord V6.
The J30A1 in the 98-02 Accords runs a mild 9.4:1 compression ratio. Generally, anything with a 10.0:1 compression ratio or higher will need higher octane fuel. But F22/F23 engines also run low compression ratios so you do not need higher octane fuel. It will only hurt you. Accord engines are tuned for economy, and low operational costs, not performance.
Stick with 87.
