mileage daily driving supercharger

[Coyotes55086]

Hey guys , so because my car is my daily driver, I'm just wondering what the drop is in mileage when you install a supercharger? Also I've heard that is centrifugal superchargers give you nearly the same mileage? Is this true? Are there differences in mileage with different types of superchargers?

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[LxMike]

It all depends on how you drive it.

 

[Balr14]

I have never owned, or knew anyone who owned, a supercharged car that drove it like it wasn't. Your gas mileage will suffer, maybe a lot. I had a supercharged 97 Pontiac T/A that at best got 11 mpg... stomping on that gas pedal can be very addicting!

 

[Coyotes55086]

Buts let's just say driving it normal driving to work Monday to Friday ?

 

[Ruiner46]

It depends a bit on your commute. I have a commute that is 75% highway. My mileage went from 22 average to about 17mpg. I have an old dinosaur gen 2 Whipple.

 

[Nickel]

Superchargers take power to make power which means off boost it feels like it has less power than stock meaning you will put your foot down more. The RS3 I drove felt like a dog. Mileage went out the window when you bought a coyote.

 

[Coyotes55086]

Superchargers take power to make power which means off boost it feels like it has less power than stock meaning you will put your foot down more. The RS3 I drove felt like a dog. Mileage went out the window when you bought a coyote.

Superchargers take power to make power which means off boost it feels like it has less power than stock meaning you will put your foot down more. The RS3 I drove felt like a dog. Mileage went out the window when you bought a coyote.

see posts like this confuse me . so you say the car almost feels like it loses power if not in boost ? is superchThing

 

[Shifting_Gears]

Superchargers run off the crank/pulley system. They add parasitic drag which makes the engine work harder to turn all the accessories (including the supercharger). This is obviously negated once the car starts making boost, but it could (I haven’t owned an SC car) cause it to feel more sluggish when you aren’t in boost.

Gas mileage will be more friendly with a centrifugal supercharger (Vortech, Paxton, etc) versus a positive displacement (Roush, Whipple, VMP) as they don’t make much boost until higher RPM, thus requiring less fuel just cruising around.

 

[SplawnDarts]

Buts let's just say driving it normal driving to work Monday to Friday ?

I'd guess about 12% of the mechanical output of my car is going to turn the SC. So that would be a first guess of how much your gas mileage would go down if you drove at the same engine output as you used before the SC. Then of course there's the fact that stepping on the throttle gets a lot more fun with the SC, so it's really worse than that.

 

[UserName]

Running a Roush I have an average of 17.1 for the lifetime of the car. On the highway the mileage can be excellent.

 

[Kleiss1]

I had a RIPP/Vortec on my 2008 Jeep and my mpg went up on highway drives. If you go easy on the skinny pedal.

 

[Chris Barnes]

2018 GT with Procharger. I average about 19mph mostly city driving. I get about 22-24 on the highway

 

[m3incorp]

The right foot determines the mileage.

 

[Decanes]

90% of mine is in town but foot stuck in it 70% of the time so 13.4 not bad
right now stuck in garage with broke motor mount

 

[Balr14]

In the old days (60s) I recall being told a supercharger consumes 30% of the power output. I think modern twin screw superchargers are around 20%. Turbos are much more efficient.

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