I was just wondering what kind of gas mileage supercharged you guys get. I currently get 14mph with a mix of city/highway. My setup is as follows:

-Vortech HO
-Manual
-stock 3.55 gear

 

I have the roushcharger on my 07 GT and get about 18-19 with mostly city driving. When I go to my parents its mostly highway/back roads (no stop lights) and get in the low 20's. If I keep the boost out when the lights turn green I get better mileage, but thats doesnt happen offen...

 

Vortech @ 11psi
4.10s
5-spd

Average 19.5-20 mpg all in town.

 

i got 21.5 going down to Miami 2 weeks ago....mostly hwy.......around town or spirited driving = much less...

 

Hmm...

How much power are you putting down to the wheels? What fuel pump setup are you using?

That's 5 mpg better than my car and I have the stock 3.55 gears.

 

Using the dual gt setup, 39lb injectors.

ProDyno did the tuning:
conservative(daily driven) at 91octane: 448rwhp/423tq
race tune using 110 leaded: 489/ 446tq

Looking at going meth injected sometime soon and going to 13/14psi(mayby)

 

As long as you stay out of boost(aka not flooring it) you should retain near stock mileage.

 

yup, I see about 10-11.

 

mine's about 13-15 in town (auto trans), and 19-23 freeway. Went down about 2-3mpg in town, and 1-2mpg on freeway from how it was before the whipple (4.10's, intake and tune)

 

How in the hell are people getting 19 to 20 in the city. I don't even drive my car hard and i see about 13 city

 

Same here.

 

14-16 on the hwy. with stock motor

since the tune and C&L intake I havent clocked it but will let you know.

 

39 lbs injectors and GT500 Pumps here.

My daily driver tune is 430whp. You are putting out a lot more tq than I am. My car only put down 383 ft lbs of torque on a dynojet.

 

Could be supporting mods----alot probably is dealing with the tuning. Are you running canned or dyno tuning?? What all are you running?

 

It was dyno tuned. The car has an OR x pipe and Magnaflow mufflers.

I have a HO kit which made 10.08 lbs of boost.

 

Cool but this thread is about running boost not stock engines...

 

I get about the same mileage now , that is when I don't kick it , as I did before I got the supercharger. I don't do a lot of just city driving , but combined city and highway I get about 16 mpg during the week. On the Highway I get about 21 mpg ...

 

I get anywhere from 16 to 20 mpg average between city and interstate. If I do primarily interstate driving at ~70 mph, I'll average 21-23 mpg.

Short lists of mods are:

Vortech s-trim @ ~11psi
Paxton intercooler
FRPP delete plates
Pypes offroad H with resonators
Borla axle pipes and mufflers
FRPP 4.10 gears

Fuel system is stock Ford pump with a KB BAP; 39lb injectors.

I run only 93 octane. Timing is at 18 degrees and with stock tires on Brenspeed's dyno pulled 469/414 earlier this fall.

 

By the way, welcome to the site d_gusler!

 

Saleen Series VI here at about 8/9 psi and my mpg numbers are pretty much the same as Tom's

(although hwy mph is about 80/85 - cruise control set to that on my trips to Orlando on turnpike I average about 22.5)