MPG with a supercharger
 

In a cruse 70-80 MPH what MPG are you getting and what supercharger do you have??? I drive alot, I put 6K on my car in 2 months. I can afford to loose some but not much. That is the main reason I'm looking at NOS. Thanks.

If potentially losing a few MPGs is something you can't afford, is a supercharger something you can? Not trying to be rude, but seems like an odd consideration given the investment of a S/C.

He said he could to lose a few mpgs....if you are not going to answer the mans question why say anything at all?

Read the OP again :shakes head:

I suppose you think your post is more relevant to his question? :gtfo2:

With the stillen kit my mpg was around 14. I can't comment on the gtm kit yet. Since I have only filled up a few times. I would say if you are going to choose a kit get go with gtm. They are worlds apart

on my way back from Socal last Saturday i made approximately 320miles on a full tank with GTM S/C wherea the Stillen S/C made a maximum of 270 miles on a full tank. all freeway driving btw.

GTM is the way to go.

GTM supercharger will probably get you ~ 20 Miles Per Gallon
Stillen supercharger will get you Mad 15 times Per Gallon

I think weiboy would concur. :tup:

Thanks this is what I need to know

what ever troll

:rofl2:



OP, your mileage is going to depend on the tune, and how you drive. With a good tune, and staying out of boost, you probably won't lose much in terms of gas mileage.

u mad cuz u drive a bimmer and on a Z forum :roflpuke2:

lol u are an angry troll :D

Sorry to resurrect an old dead thread, but does anyone have more info on this? For example, how much might one expect to lose in city driving and highway driving respectively rather than an average since we don't know how much each driver will do city vs highway? I could stand to lose a few MPG, but someone told me I should expect to lose like 5+ which would put me ridiculously low since I already have 4.08 gears.

I doubt you'd get more than 10-11 on a 7AT with a SC and 4.08s



And please someone tell the man than 4.08 and forced induction is too much, especially on the 7AT

you reply to every thread i am in, lol

I wsa around 15-16 MPG with mine :/

With boost and 4.08s, won't you get 0 miles per gallon since you're just sitting still spinning the tires?

sam at GTM said to expect a 5-7 mpg loss

I get 24 mpg on the hwy with mine.

Is that relatively traffic free cruising on the highways? How much did you get before the kit? I would be cool with that, but it's hard to throw out what Sam said, though since they make the kits. I would start a SC mpg thread poll, but I know I will be flamed for caring about MPG, haha.

Cruising down the highway I get that,but trust me once your boosted you won't give a sh!t about gas mileage.:driving:

Unless I'm missing something a closed loop map setting should get the same mpg as anyone's closed loop map setting. I get 27mpg straight highway. I should get the same with whatever bolted on as long as I stay in closed loop. My subis were 27mpg also pushing over 330hp to the wheels. Open loop is another story. The fact that your asking about a supercharger is irrelevant, the question should be "with my SC what will my right foot and pedal get me for mpg loss?" If your car weighs the same as a NA car, driving down the highway your mpg's should be identical.

It won't be I can say that first hand.:hello:

BruceLi!!! You listening??? Lol

:icon18:

yes, but my bigger concern was Sam's 5-7 mpg loss estimate, haha. I the traction thing was a big issue, I could just swap out tot he stock pumpkin.

I would think the additional parasitic drag from the blower would eat up some gas, even in closed loop.

Yeahhhhhh :iagree:
And to maintain speed you need to press the gas pedal taking it off the closed loop and since you're S/C vs Turbo'd you'd have to burn even more fuel to turn the SC (right?)


Oh, and synolimit, your Subarus are turbo'd, very different beasts

MPG with a supercharger
 

You'd still be in closed loop at part throttle, but you're right on the rest.

How part is part throttle though? I've only seen closed loop when my foot was off the gas pedal pretty much

I'm not sure where the switchover point is on the Z. For cruising on the freeway you'd definitely be in closed loop to maintain speed. Passing would probably jump into open loop.

DepointfiveO is in closed loop.:roflpuke2:

(NA)
G37 models with the manual gearbox are actually the least fuel-efficient, at 17/25; models with the automatic get up to 19 mpg city, 27 highway.

So how much MPG LOST should be expected with a SC setup compared to NA?

Wow that's really bad for a stock N/A G37. I have gotten 33mpg driving on the highway after I installed my intakes, but that was literally me driving 65mph the whole way and i reset my gauge on the highway, but I digress.

You should only really lose about 3-5mpg, assuming you drive the same. But let's be realistic here, you're probably going to step on it more, who wouldnt? XD.

I was getting 18-19mpg, but recently got a re-tune and on the first full tank I have gone farther total for same fuel. Will be filling up tomorrow and will report back.

is that mostly highway cruising?

THIS

A tune can make a difference with MPG, especially in closed loop driving.

*700th post*

Ok, had a chance to go through some old notes.
Average about 18.2 most of the time but was usually in the 17.5-18.5 range, after tune I was at 19.9MPG on the first tank. This was city and highway combined style, I sit through about 1.5 hours of traffic twice a week and in the morning no traffic.

I haven't finished my tank of gas yet ,I'm at half and I went 210 miles so far.