Pure reference

[equate975]

I know people are going to chime in and be like "oh this has been discussed in threads" but I cant find a thread dedicated to this, and I dont wanna read a million threads to pickout specific info.

So

What kind of MPG do you get on the swap? How many miles on a tank?

Im trying to figure out a list of what will give you what, so respond like this:

-Engine (mods)
-Tranny
-Diff
-MPG
-Miles on a tank

Thanks a ton guys

[Jason89i]

90 m3
98 s52 fully rebuilt, 3.5hfm, 24#inj, turner chip, aa full exhaust, pulleys, cust. intake.
zf transmission(1:1 5th), s3.25 diff, 17" wheels.
24.5-26mpg.

89 325i
94 m50tu, m3 cams, dsylvia chip, e36m3 muffler.
e36 getrag transmission (1:1 5th), s3.25 diff, 17" wheels
26-27mpg.

86 325es
92 m50, stock "e" exhaust w/ cat (very restrictive), stock chip.
e30 getrag 265, s3.73 diff, 14" snow tires.
26mpg with long warmups in the winter.

cheers, jason

[equate975]

Awesome, Seems like I have about the same setup as your 90 m3, minus the pullys. Im only seeing 21mpg best with fairly good driving.

With that

88 m3
97 s52, 3.5 HFM, 24# injectors, JC chip, custom exhaust
ZF tranny
3.25 LSD 17" wheels
~21 mpg
265 miles on a tank

[Sean]

Hahaa...my supereta gets like 20 mpg in town and on the highway.

Maybe it's my 3.73 gearing with the love revving Eta?? :P

[blunttech]

98 s52
schricks
3.5 hfm 24# INJECTORS
UNDERDRIVES
ZF TRANNY
346 lsd
i got 25-26 on the hiway with my 3.25 lsd but i havent checked since i went 3.46
as long as i get better than with my truck im ahead of the game and dont really care

[ed94r]

E30/S50
21#, Big HFM, AA Tune, No cat, and a 260/3.73

315 miles to the tank in full-on granny mode, but the light never came on even though I was sitting on E. Do we really have a low-on-gas warning light?

300 is about the average...

Ed

[1990m3]

shit, I get about 215-230 miles on a tank so far, but I have trouble keeping my foot out of the gas. Usually works out to 19-20mpg.

'95 s50
3.5" HFM
24lb injectors
10lb flywheel
UUC pullies
JC chip
3.46 diff
lead foot

Dave

[Stu]

On the highway, thanks to an adjustable FPR, running at 48psi at partial throttle (stock is 52):
28-30mpg (best has been just over 31)

3.0
~42k miles
stock injectors
3.5 maf
no cat
custom BMW chip
Getrag 260/3.73
alum flywheel
weight is around 2620
cup mirrors for superior aerodynamics ;)

mileage is lousy when I use WOT a lot because it dumps the fuel to ~60psi

edit: I do 3-5 over on the highway, speed is usually about 58 in 55's and under 70 in 65's.

[Rev Engineer]

As a data point, my stock s52 98 m3 gets around 21-22mpg. If I could manage to drive it conservatively, it would get around 25 city/hwy. I once drove it at 60mph for about a hundred miles and it got nearly 30mpg. I just love feeling the low end torque of the s52 so I lay into the throttle all the time and live with 21-22mpg.

[Sean]

As a data point, my stock s52 98 m3 gets around 21-22mpg. If I could manage to drive it conservatively, it would get around 25 city/hwy. I once drove it at 60mph for about a hundred miles and it got nearly 30mpg. I just love feeling the low end torque of the s52 so I lay into the throttle all the time and live with 21-22mpg.

RIGHT ON! :D

Same with me...except in a not so powerful sense.

However, it will be when I'm done with my stroker...heh