what mpg from your 325 m20

[e30_Turbo]

What is he running?

Ants running a 325i turbo, T3, Megasquirt, 42lb injectors, BBR manifold and hours and hours of tuning!

[e30bmlover]

there isnt allot on the road that will keep up with him.... lets put it like that.

[jmc330i]

My Sport would get 27-28mpg on an everyday drive with a bit of everything - town, country lanes, fast country lanes . On a long motorway run (sat at 75ish) it would get 37mpg no worries.

I would brim the tank before I left and then again when I got back and worked it out from the miles Ive done/fuel used. Its the only real accurate way.

Arent the M50's better on fuel than an M20 due to more valves?

2.5 M50 isnt much better than the 2.5 M20 if any. The 2.8 M52 is quite a bit better than both, but thats probably because its state of de-tune. Throw the 2.5 bits on the 2.8 to get some proper power from it and it will most likely be just as bad.

[Quaser]

I'm pretty sure the OBC and fuel gauge had an argument some time in the 90's and are no longer talking though. Sometimes the OBC says I have a range of 100 odd miles but the fuel guage says different!

Isnt there a way to calibrate this on the obc?

Q

[Simon13]

the obc range is pretty dam good i take mine for gospel in my auto never run out yet. once u start on the 50miles and below it's pretty good.

plus when the light comes on u have 6 litres so 30-40 miles left. I've never known the light to ever not work on an E30 either

[Quaser]

yes - but when i fill up the tank, its says i got 490+ miles remaining.

Its also quite depressing watchin the range go down almost every minute sometimes!!!

i remember calibrating/setting it once on the car. It involved waiting for the light to go on, then setting it to zero. It was much more accurate then!

Q

[Fushion_Julz]

When the light on the fuel gauge comes on, the OBC should read 3.5litres (although this isn't 100% as I've managed 60+ miles on that before now)...

But that is the "official" word, apparantly...

To get the amount f fuel left press the 1000 and the 1 button together with ignition on...

To adjust, you have to prise out the small round cover on the lower left next to the 1000 btn and adjust the small plastic grub screw on the circuit board...

Should have said that that gives (in my 325) a supposed range when full of approx 325+ miles....Seems about correct.

[Project_E30]

the obc range is pretty dam good i take mine for gospel in my auto never run out yet. once u start on the 50miles and below it's pretty good.

plus when the light comes on u have 6 litres so 30-40 miles left. I've never known the light to ever not work on an E30 either

My fuel gauge works fine but never had the light go on. Do I dare chance running until the light comes on?

[mattG]

stick 50 quid in my 325 sport auto and get about 300 , miles haven't seen the light come either and range always reads 22 miles! will give that reset 1000btn thing ago, thanks if that works