Turbo guys: fuel mileage?

**jvit27** · 05-06-2005, 04:01 PM

Curious what the turbo S52's (350-450whp) are getting for fuel mileage as of lately? I know I shouldn't care but I am just wondering what to expect how it will do when im not beating on it.

**ParadigmGuy** · 05-06-2005, 09:44 PM

Generally it will get better gas mileage than it did in stock form, unless you're on it.

**OZ3M** · 05-06-2005, 10:13 PM

I get 17-18 most of the time.
Highway off boost gets me mid 20s.

2.79 rearend though.

**jvit27** · 05-06-2005, 10:39 PM

nice!

Omer I saw your name in the thread preview and thought "oh HIS reply should be interesting!" lol That's pretty good considering the power you're making. I gotta get another ride from you one of these days...last time was just a 1st-2nd gear quickie about 200whp ago!

**Bassmaster** · 05-06-2005, 10:54 PM

I avg on a tank of 93 octane 340 city and about 400 hwy.

**trthrrt489** · 05-07-2005, 12:11 AM

I'm boosting around all over the place, and am going through the gas. I couldn't give you exact mpg numbers but off boost its about the same. Maybe I'm just getting used to it, but the gas trigger is being constantly pulled.

**grecobeemer** · 05-07-2005, 02:56 AM

Prob about the same gas mileage is used, I figure. The reason is more gas to get up hills and such in a NA car. And with boost, lighter foot+more power=Same gas, I guess.

**themadhatter** · 05-07-2005, 06:52 AM

Originally Posted by Bassmaster

I avg on a tank of 93 octane 340 city and about 400 hwy.

that's crazy!

I average about 240-260 city and 320 highway....NA.

**jasonknezo** · 05-07-2005, 08:15 AM

Originally Posted by themadhatter

that's crazy!

I average about 240-260 city and 320 highway....NA.

as do i, wierd, i NEVER get over 310-320 miles on a tank, a buddy of mines 94 rx7 gets 220 a tank if that guess were not tooo bad

**themadhatter** · 05-07-2005, 08:20 AM

Originally Posted by jasonknezo

as do i, wierd, i NEVER get over 310-320 miles on a tank, a buddy of mines 94 rx7 gets 220 a tank if that guess were not tooo bad

rotaries were never known for great mileage or efficiency.

However, getting better mileage with a turbo just means I'm just gonna be a happier bimmerhead.

**OZ3M** · 05-07-2005, 09:10 AM

Originally Posted by themadhatter

rotaries were never known for great mileage or efficiency.

However, getting better mileage with a turbo just means I'm just gonna be a happier bimmerhead.

Are you guys assuming same fuel tank volume? Mine is 13.5 gal.

**jasonknezo** · 05-07-2005, 09:47 AM

hmm what is an e36 fuel tank volume?, have to look today after the 33 dollar gas bill

**jvit27** · 05-07-2005, 10:58 AM

16.5gal

**E36bmer** · 05-07-2005, 12:53 PM

Originally Posted by OZ3M

I get 17-18 most of the time.
Highway off boost gets me mid 20s.

2.79 rearend though.

That's pretty good, I get low 20's on the interstate, but the with the car sitting at 4000 for hours on end it doesn't really get good MPG, Mine's N/A.

Also, the most I've ever put in my tank was 16.43 gal

**RRdawho?** · 05-07-2005, 02:11 PM

Makes sense w/ the turbos though. Your re-using exhaust gas and converting it back into energy for the engine, thus making it more efficient ASSUMING you drive w/ a normal foot.

**themadhatter** · 05-07-2005, 02:23 PM

Originally Posted by OZ3M

Are you guys assuming same fuel tank volume? Mine is 13.5 gal.

perhaps but even 3 gallons shy, that's still over 100 miles less range. still beautiful cars either way you look at it.

**Josh** · 05-07-2005, 02:37 PM

About 150 miles per tank.

**Bassmaster** · 05-07-2005, 02:53 PM

Originally Posted by themadhatter

that's crazy!

I average about 240-260 city and 320 highway....NA.

I think some of the milage could be contributed to the larger gas tank? The other could be the tec III....Im running it a little leaner in the cruising non boosted zones... its around 15:1 TO 15:5 A/F ratio's

I've filled up in Atlanta and did not put any gas in the car until the day after I got home...Atlanta to Durham is about 375miles....and I was running pretty hard driving back with the NOPI crowd.

**Scho** · 05-07-2005, 03:03 PM

I get 19-20 mpg in the city, traffic driving and 25-26 mpg on highway trips. It is not much different than stock. That i moderately boosting. I drove the car hard all week this week as my last hoorah with it and I still got over 18 mpg in the city alone.

**jvit27** · 05-08-2005, 12:14 AM

Is it finally sold Mike?

**Stevefazek** · 05-08-2005, 12:18 AM

i burnt half a tank in 75 miles once.

i am NA and if i drive with out getting on it much i can get 380 a tank.

If i speed and get on it i normally can get 275 a tnak

**slvr98 M** · 05-08-2005, 11:41 AM

I get about 25 mpg on the highway.

**slcook54** · 05-08-2005, 12:57 PM

Originally Posted by jasonknezo

as do i, wierd, i NEVER get over 310-320 miles on a tank, a buddy of mines 94 rx7 gets 220 a tank if that guess were not tooo bad

If you aren't breaking 300 miles per tank, you should definitely check something. Fuel filter, air filter, O2 sensor. I saw an increase of about 30-50 miles per tank after changing my air filter and O2 sensor. I can always break 300, I usually hit about 320-340 street and can break 400 on the Freeway. I drive semi-agressive. I'm not WOT every chance I get, but any onramps or bridge underpasses, definitely.

**Excidium28** · 05-09-2005, 03:11 AM

My car says im gettin 23mpg which is bullshit I feel like im gettin 14, with AA SC..... on 19" wheels.

**jvit27** · 05-09-2005, 04:22 AM

Does anyone know if the ~$300 Dinan control module that corrects the OBC will work with higher power/bigger injector setups than an 8psi SC? I'd like to keep the fuel consumption features accurate if possible.

I'd assume thats your problem Excidium - the OBC is no longer calibrated properly.

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