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Thumper · 04-20-2023, 10:54 PM

I always run premium since the thing gets 50+ mpg.

In my experience, opening up the exhaust and other high performance measures allow you to use more fuel efficiently and accelerate faster, but also get at least as good mileage when you drive gently since the engine is running more efficiently. A modified engine/exhaust can get as good or better mileage, or slightly worse than stock since it can use more when you really get on it twist the throttle.

Bottom line is that you will get better than 60mpg if you accelerate gently and don't do a lot of heavy acceleration, AND keep the speed down in the most efficient rpm, maybe 4000. The exact rpm may be different, but make the engine work harder, fuel economy will drop. I can squeeze 45+ from my 1.4L Jetta (turbo) by allowing it to go faster on downhills while gently accelerating, and letting it slow down, lifting my foot of the throttle slowly on the way up the hill (using momentum). I am a hypermiler, but I try to stay out of the way.

04-20-2023, 10:54 PM	#9
Thumper Join Date: Feb 2021 Location: Kansas City Posts: 2,394	I always run premium since the thing gets 50+ mpg. In my experience, opening up the exhaust and other high performance measures allow you to use more fuel efficiently and accelerate faster, but also get at least as good mileage when you drive gently since the engine is running more efficiently. A modified engine/exhaust can get as good or better mileage, or slightly worse than stock since it can use more when you really get on it twist the throttle. Bottom line is that you will get better than 60mpg if you accelerate gently and don't do a lot of heavy acceleration, AND keep the speed down in the most efficient rpm, maybe 4000. The exact rpm may be different, but make the engine work harder, fuel economy will drop. I can squeeze 45+ from my 1.4L Jetta (turbo) by allowing it to go faster on downhills while gently accelerating, and letting it slow down, lifting my foot of the throttle slowly on the way up the hill (using momentum). I am a hypermiler, but I try to stay out of the way. __________________ -2022 5 speed Templar X Orange, OEM 51T rear sprocket, 14T front sprocket -NOS 2020 KTM 250SX (2-stroke motocross), less than 10 hours on it Last edited by Thumper; 04-21-2023 at 08:09 AM.
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