BlueKnight

ok, I think I must be running lean as hell. I just got 264.6 miles on a tank of gass. The fill up was 13.8 gallons. I usually average about 215 miles per tank. I don't know if it is because of the turbo or just the tune but daaamn. I hope it stays like that. lol

OnRails

You know it's kinda funny when you get excited about 19 MPG .... but I do too.. lol

I8U

iTrader: (1)

I average 285-310 per tank on the highway...but I'm N/A.

Highway8

iTrader: (11)

Umm, you need to know if you are running lean or not, hope you have a wideband o2 or an OBD2 reader to read the stock 02 sensor. Lean at a cruise is one thing but with FI if you are lean 13+ afr under boost, you wont be very heppy for very long.

Oh, a properly tunned turbo should not effect MPG (+ or -) very much if the vehicle is driven the same as before FI..

Alexb

iTrader: (1)

Most i've gotten was 300. But I drive almost everywhere in 6th...

Chavy

hmm i only get about 220...

Easy_E1

iTrader: (2)

Just keep your foot out of it and it should get good mileage. I just got 75 out of a quarter tank yesterday.

shazy

My last tank was 257miles and I was running on the fuel warning light for 14miles. Then when I filled up, it said that it was 52 litres, isn't our gas tank 60 litres or something? Well atleast I got 20mpg 50/50 city highway.

AJ's Shinka

Me too. 215 on street and I usually drive street.

raleighRX8

I just got my new engine broke-in and I am very excited! I just got 245 miles out of this tank, it was 185 on the old engine!

09Factor

I know the AP tuned helps alot. Also properly flowing and atomizing fuel injectors do to.

Phil's 8

iTrader: (3)

Since the rebuild and tune, I have taken three trip now to test the gas mileage. I am getting 220 miles to a tank of premix on the highway. I am actually very happy. Now if MM could do something with my foot in town

shazy

Im on premix and I did 50/50 city/highway driving... I wonder what I'll get if it's pure highway.

j0eStER

ok wtf.. i get about 180 max before my gas light turns on.. and I dont even drive rough....

Razz1

Clean the MAF and wait for the summer gas formula to show up at the pump

Z0oMzo0m

iTrader: (4)

damn i drive highway everyday, and i get about 70 miles on first 1/4 but it slowly drops after that.

1st 1/4 70miles
2nd 1/4 i can push 150miles
3rd 1/4 180 to 190 miles
4th 1/4 sittin around 210 before i fill up and put in maybe 12 to 13 gallons

cjkim

95% highway, i've gotten something like 324 and put in about 14 gallons.
rarely go 95% highway though

I've also done like 150 miles on a tank.. goes to show a lot of the differences in mpg is driving style

Z0oMzo0m

iTrader: (4)

yeah i seem to average just shy of 200 on most of my driving... and again most is highway unitl weekends come. then i DRIVE the car but still seem to become short of 200. Hopefully my a.p tune wil help. i know im running very rich with mods i have. well at least by the smell and flames of the car..

zoom44

ive done 340 miles with a 13.8 fill up all highway

Phil's 8

iTrader: (3)

Being towed by what?.............................. did you break down and get towed by the wrecker?

JTtheDude

I've done around 340ish too, it was a while ago, I don't remember how much gas I put in, almost all highway driving
https://www.rx8club.com/gulf-rx-8-forum-32/1-tank-gas-306-miles-still-going-96561/

Krazed_Rx8

iTrader: (5)

264?!?!? Amazing... Im only getting about 160 and Im N/A

N rider89

how do you like the turbo? i didnt realize you had the BHR/MM turbo. any dyno #s? i really want to know how a turbo a/t does.

Ti Carbon

I get 260 out of a full tank if i drive like a good little boy. An Im FI and i premix, but i have no cat.

4motionTT

I would only get 160 when i first got my car, then i cleaned the maf and i got 200 average (190-210) and now my car only gets about 170 after i put new coils wires plugs and air filter?? regardless the mpg on these cars suuuucks for how much power they make.