How much hit do you take in fuel mileage if you tune your car?...

[Zone47]

... assuming I drive the same pre tune vs post tune (and we know I probably won't).

The reason I asked is; I have a Vdub GTI that tuned to stage 2 and the normal transportation style driving fuel economy actually increased 1-2 mpg (35 mpg). The Unitronic stage 2 tune advertised fuel optimization as part of the upgrade and I guess it's true.

So I wonder if Hondata tunes optimize fuel economy in a normal driving environment or if it will burn more fuel than a factory tune? The reason I ask is 80% of my driving is on city streets and to car shows where I'm not exactly flogging the engine all the time. I want the best of both worlds, if possible.

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[Johaw]

Most people ive seen have said they experienced better mileage or the same OFC everyone drives a bit more spiritedly causing it to be lower but for the same driving they get the same mpg

 

[Integra23]

17-18

 

[Websitesdown]

17-18

I'm getting 22 right now and I just flashed and am running race 2. I love giving it gas too lol.

 

[Vito.FL5]

depends on how your tune is set up.

If you want the best for your motor, mileage will be worse.

 

[UCF120]

Currently just have the PRL HVI intake and tuned through @Jester04…30mpg is what I’m averaging per tank which I’m honestly shocked with lol. I do mostly highway though and keep it in 6th just cruising. I probably do one decent pull every time I drive it though and still average 30mpg

 

[nawfoo]

I was getting 32 mpg in my 2017 BMW 240. Flashed to almost 400 hp.

 

[Zone47]

I was getting 32 mpg in my 2017 BMW 240. Flashed to almost 400 hp.

I think it might be gearing. My Vdub GTI mk7 gets 36 mpg pretty easy and it's Unitronic stage 2 @ 337 hp. I usually just cruise but jump into it once or twice every time I have it out. Gearing is noticeably taller than the Honda.

The Type R got a best of 32 just driving it pretty easy around rural roads with not much stop and go ... but 27 to 30 while driving slightly more aggressive. I had a K20 Acura RSX type S that got 36 mpg pretty regularly. Of course it wasn't nearly as quick as the Type R.

 

[Zone47]

Currently just have the PRL HVI intake and tuned through @Jester04…30mpg is what I’m averaging per tank which I’m honestly shocked with lol. I do mostly highway though and keep it in 6th just cruising. I probably do one decent pull every time I drive it though and still average 30mpg

That's pretty good. Maybe his tuning optimizes the fuel mileage when you aren't romping it.

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