well gas prices are going thru the roof of course already.. atleast in washington state. and i was wondering if you could tune a turbo setup to give you better mpg?

 

you can, im pretty sure you would increase the timing in your vacumm area and that will help increase your mileage but also give you more power

but in reality its how you drive your car, im always putting gas in my car because boosting is fun and tuning sucks

 

if u stay outside of boost while driving and tune for that yes u can.. i was averaging 35mpg on my last setup when i stayed out of boost, and i live in alabama where we have giant rolling hills so that was an amazing number.
but my new setup i get 6mpg. LOL ;( stupid drag car

 

isnt there a spot where if you have to much boost it would start having negative effects on gas mileage?

 

so if you stayed out of boost wouldnt that be the same gas mileage as leaving the engine na?

 

I hear ya on the gas prices bro. Last time I looked premium was $3.89 here and that was a few days ago. As far as tuning for mileage Its called force open loop. Being in open loop while just cruising means you can safely lean out the fuel to to give better mileage. With city driving and boosting here and there I get 28mpg. I have my settings where closed loop is only at idle. Anything else and I am open loop and have my afr around 15.2-15.5 while cruising

 

don't our cars stock get about that same mileage? what do you get on the highway?

 

I'm gettin' 28-29mpg now, and I drive pretty hard...boost at least every other stop light, I just can't help myself. Not sure about highway driving, haven't gone anywhere.

Pre-turbo, I got like...30 or 31, but that's on the highway. 27 in the city usually.

 

hm you must have a really good tune! but you dont know the mileage on the highway? if its that good in the city im sure its mid 30s on the highway

 

i always got around 28-30mpg with my lancer and i just used the stock evo rom tuned to my injectors. now for my subaru with a stock turbo im getting like 22 or so but i also have a transfer case and rear differential to move as well....

 

yeah Im not sure i can use the evo rom since im 05

 

Never have done a mileage check with mostly highway driving but my guess with my current settings would be around 32 or so.

 

all you have to do is stay out of boost and you will get good gas mileage but who here has stayed out of boost for the whole day

 

ha i have stayed out of boost since i owned the car

 

Gas engines are meant to burn gas, not save it.