104+ Performance (10406) Octane Boost - Boosts Octane And Cleans injectors To Improve Engine Performance - Improve Gas Mileage - 1 Bottle Treats Up To 18 Gallons, 16 fl. oz.

I have been using 104 Octane Boost in all of my vehicles for years. It works great! Proven horsepower gains for sure!

I have tried a few octane boost formulations and I have found that 104+ is the first one to show actual physical gains that make a real difference on the road and on the dyno. For the price, even if you never get to test on a dyno, you will notice a huge difference in throttle response and acceleration once the bottle is fully mixed in the tank and running thought the fuel system. Now this is not for flex fuel vehicles, but does make a huge difference in Turbo powered V6 engines and V8 engines, you will be pleasantly surprised.

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I've been using this stuff for decades. It's great, increases power and cleans the fuel injectors as it states.

If you just recently bought a jdm car this might be in order. From my understanding, other countries uses higher octane than here in the states. The ecu in those countries might be looking for higher octane. I mixed 3/4 of a bottle with a full tank of 91 octane. After doing that, the engine seemed a lot smoother with better performance. Good value.