Gas mileage, what you getting?

[N.RotaryTech]

In my '89 GTU, (S5 mild port n/a, with RB mufflers an presilencer, emission's removed, AC components removed, aux sleeves an actuating rods removed, vdi open, heat-shielded cone air filter, 1/2oz. per gallon premix.) usually the range is from 18-25 MPG.

But with the latest tank, I got 27.6 MPG! Which is the highest I experienced in this car.

On a regular day, the breakdown is probably...
With city driving, I get about 18-20 mpg.
Hwy & city, I get 20-22 mpg.
Out of town RX7 meet or out of town trip, I get 22-25 mpg.

But the latest tank I did, out of town trip, and hwy & city driving.
Averaging 70 mph on the hwy.
And got 27.6 mpg.

Someday...30mpg...someday. :D

[Phoenix7]

I'm getting 18-20mpg city (15mpg on good days) and up to 25 hwy.

Intake, RB header, midpipe and HKS 52mm catback. Pineapple Aux. sleeves, SAFC (tuned to 11's = ~ 150rwhp), no premix, Avg 75mph.

Good numbers BTW. 30 MPG seems doable.

[vex]

I'll post up my stats once I'm back on my home comp.

[RETed]

Right about 14 - 15mpg strictly city driving...
It'll creep up to about 17 - 18mpg once I start jumping on the freeway more.

13BT
ported
stock turbo
stock IC
11 - 12psi
Haltech E8
240hp at the wheels on a Dyna Pack


-Ted

[My5ABaby]

I stopped keeping track a few fill ups ago, but before then... :)

Date : Gallons (mpg)
5-07 : 9.241
5-18: 10.656 (17.6426)
5-25 : 9.501 (20.1031)
6-05 : 11.754 (18.4618)
6-25 : 11.030 (15.9565)
7-15 : 8.806 (14.3084)
7-31 : 11.516 (15.4567)
8-08 : 6.922 (16.4692)
8-11 : 2.808 (17.094)
8-12 : 4.707 (24.4317, all highway for a test)
8-25 : 10.294 (16.4173)
9-01 : 11.080 (19.0433)
9-10 : 10.928 (19.5827)
9-19 : 5.603 (13.03)
9-28 : 12.584 (17.244)
10-12: 10.604 (17.9178)
10-22: 10.342 (18.3717)
10-31: 10.603 (17.3536)
11-10: 10.301 (19.1246)
11-20: 10.685 (19.905)
12-14: 10.493 (15.0103)
1-05 : 11.228 (11.7549)
1-13 : 7.912 (25.63)
1-30 : 9.124 (15.7825)
2-21 : 9.529 (15.1117)
3-03 : 10.598 (20.664)

Average mpg : 16.9949

That's probably 65% city. S4 N/A with wired open 5/6th ports (haven't got around to fixing that).

[vex]

Here's my MPG from 12/07-6/08
10.84969789
11.08811354
22.46897453
20.78227049
24.25531915
21.83933766
23.01381693
11.44400786
10.89867579
21.60533911
22.88592867
14.04095422
14.97948527
23.05433732
18.46236312
23.56626861
24.09230769
21.86765989
24.55517241
22.7091272
23.39853301
22.44504111
23.33252876
23.8468854
24.26514697
20.70511886

[MaczPayne]

I get about 18mpg combined, 22 on the highway.

s5 13bt + stock turbo
12psi + stock IC
RB turboback
MT LT8-s
~230whp

[classicauto]

all hwy driving without opening the secondaries I can get slightly over 20mpg (roughly...I'm converting from Km's) but when I'm denting the floor with the loud pedal its closer to 10 :( But it (was) fast as a scared monkey.

[FirstRotaryExp]

Avg'ing right around 20-24mpg on a stock block with out emissions running a RB header/presilencer and a straight pipe into a cheap ebay muffler, SAFC with about 10% fuel knocked out at idle to -4% at redline(still need too actually tune it better), an intake leak of some kind, either a gasket or one of the lower injector grommets, no ac/ps. And average MPH is 80+ during interstate travels and 60ish around town. 1-2 gear is always redlined before a shift, and sometimes 3rd as well. But i hope to better my numbers soon with a better CAI, instead of the cone on the end of the intake tube in the hot bay. Car also has an FD alternator an a ford escort Efan. Still need to get around to getting a cleaned/flow tested set of injectors installed and tidying up things but its driven everywhere I want it to go.

[88turboii]

In my '89 GTU, (S5 mild port n/a, with RB mufflers an presilencer, emission's removed, AC components removed, aux sleeves an actuating rods removed, vdi open, heat-shielded cone air filter, 1/2oz. per gallon premix.) usually the range is from 18-25 MPG.

But with the latest tank, I got 27.6 MPG! Which is the highest I experienced in this car.

On a regular day, the breakdown is probably...
With city driving, I get about 18-20 mpg.
Hwy & city, I get 20-22 mpg.
Out of town RX7 meet or out of town trip, I get 22-25 mpg.

But the latest tank I did, out of town trip, and hwy & city driving.
Averaging 70 mph on the hwy.
And got 27.6 mpg.

Someday...30mpg...someday. :D

I call BS, brother.. i bet the gas pump was not calibrated right. the best ive seen is 24.5 which was mostly crusing at 60mph, i usually get 16 mpg city. rtek 2.1

[My5ABaby]

I believe 27.6 all highway. I get 24 mpg all highway and that's on an untuned N/A. A good tuning on a TII that stays out of boost can hit that. Now whether or not he actually got it, who knows. But I say it's possible.

[djmtsu]

I do not dive mine enough to keep track that well, but on the way back from DGRR, I averaged 28.5 MPG.

S5 TII, no emissions, RB DP & silencer, Apexi N1 EVO catback.

[BLKTOPTRVL]

I call BS, brother.. i bet the gas pump was not calibrated right. the best ive seen is 24.5 which was mostly crusing at 60mph, i usually get 16 mpg city. rtek 2.1

I've gotten 26-27 in all hw driving in my vert. It is possible.

[RETed]

I call BS, brother.. i bet the gas pump was not calibrated right. the best ive seen is 24.5 which was mostly crusing at 60mph, i usually get 16 mpg city. rtek 2.1

I've gotten calculated 28mpg, and it should've been more like 30mpg cause I didn't drain the gas tank all the way down.
The trip OD hit 400, and typically fill-ups were about 13 gallons - you do the math.
Since I was doing such long distance driving, I wasn't going to take a chance and drain the gas tank that low - i.e. the fuel-low warning light never came on.
If I really wanted to push it, the car would've easily hit 30mpg.
This is driving between Sacramento, CA and Las Vegas, NV 100% freeway at speeds of 60mph to 80mph, just under the point where the secondaries kick in at 3,500RPM.
Back then it was stock ECU (well, reprogrammed G-Force unit) with full exhaust on a 1987 Turbo II.

Side note, I was able to hit 200 miles on a 10 gallon fill-up's.
I only fill up 10 gallons at a time, and it makes calculating mileage easy now.
Still tweaking the Haltech E8...


-Ted

[Phoenix7]

fellas, hook me up in this thread:
http://rotarycarclub.com/showthread.php?p=35564

[vex]

well i did some more data entry, check out some of my recent mpg's:
21.6163311
22.7419719
23.6608230
20.9012464
23.6247829
23.9391513
24.2102469
21.1728627
25.8490566
23.2093093

[Boostmaniac]

I get 11 mpg.... fuck all of you.

Time to go stand alone and rebuild time.

(The car is running 10's in the AFR range and I am SEVERELY heavy footed. I love my boost.)

[vex]

You're just a hater.

[Phoenix7]

you're getting a happy 11mpg. If we were to calculate happy MPG we'd be in your boat.

[vex]

you're getting a happy 11mpg. If we were to calculate happy MPG we'd be in your boat.

hey! I resent that! That's just my driving style! In town i get 10 to 11 mpg.

[Phoenix7]

yeah and I bet you're smiling everytime you're boosting with the pedal all the way down.

If you're not then those aren't happy mpg.

[TehMonkay]

Well once the engine is back in im sure he will be, it's a little strange boosting with half of the compressor wheel intact.

[vex]

yeah and I bet you're smiling everytime you're boosting with the pedal all the way down.

If you're not then those aren't happy mpg.

I would be smiling if I had boost when i pushed the pedal anywhere. I'm NA :(

[Boostmaniac]

Oh, I smile alright, then fill her up with premium and I am still smiling.

It's worth it.

[N.RotaryTech]

Well, I was disappointed with my mpgs last Saturday.
I went to a rx7 meet in the upstate, drove around an in the mountains.
I got gas once when I was up there, then yesterday.
Results: 22.6 and 23.2

Well I guess thats my norm.
I was hoping for 25 or better.

[Rotary13B1]

Gosh.. I "feel" like I'm getting 12-14MPG in my T2 vert. If I wasn't so cheap and just top off the tank, I'd find out. Stop putting in 20 bucks at a time! lol

But I like keeping the needle around 4K in 3rd gear.

[JunpoweR]

90 GTUs 4.30 gearing

15-16 city
18-22 fwy

[NitroRacer]

without a tune on my fresh build...umm i say about 5mpg city and 10mpg highway. jeez thats horrible

['89gtusman]

im getting about 20-25 between city and high-way 13b non turbo. oh yeah does anyone know where i can get a drive shaft with replaceable u-joints

[Phoenix7]

www.mazdatrix.com

305 for their serviceable DS.

[87turbo_turtle]

22 mpg the same is my f**n millina. BUT runs off of premium plus

[Whizbang]

my fiancee's vert gets about 20 with the top down all the time. The turbo im not too sure. I think above 20 on the freeway.

[N.RotaryTech]

My latest fill up, I got 25.6mpg.

[87turbo_turtle]

Toby you should come by and see the project. He is finally running and we acquried another turbo. Black and fully kited.

[1990 GT-X]

I get 12 to the gallon. 90 Turbo with TO4B 60AR ball bearing garrett turbo, 1000 secondary injectors, 680 primaries. Large street port. SAFC 2 with AVCR. 433 gears in the rear. Yeah, not cheap. I go about 200 miles on a full tank. Anyways,,,, yeah.

[Scooter]

On average I'm getting about 9/10mpg in the city. about 24 on the highway.

Thats with running excessively rich.

[87turbo_turtle]

wait what rotary doesn't run rich...LOL

[NoDOHC]

Actually, my '86 ran very lean on the Haltech (16.2:1 while cruising)

I could easily exceed 30 mpg with it.

I got about 28 or 29 running around town (driving it like I stole it).

Not too bad for 165 rwhp!

The '91 gets 20 city and 25 highway (best was 27.2 mpg).

[N.RotaryTech]

So a couple weeks ago I took a trip up to Durham NC for a rally-x.
Before I left I filled up my tires to 35psi warm.
I got 28.0 MPG!!!
Then the next tank was 26.4 mpg.
I normally don't think of over inflating my tires, but now I do, lol.

[rotaryracer]

My all stock '87 TII gets btwn 13-18mpg. My '83 race car 13b n/a gets about 7mpg est. ALL FUN and SMILIN' ! ! Friend of mine gets 25mpg in his '83 12a n/a. 80mph highway road trip.