E30 M3 Dyno Plot

ShepsM3,

The figures you have posted are similar to a standard 2.0l S14. It may be worth checking your stroke, as externally all these engines whether 2.0L, 2.3L and 2.5L look exactly the same.  A 2.5 L should make more power than that.

I take, it does have 4 cylinders, not six ???

How long have you had the car, and has it been like this from the start?

Goodluck.

Hi, thanks for your comments on my power output.

It IS a 2.5 4 cylinder. All engine block numbers are genuine and correct. Its not the engine, sometimes it feels good, other times flat. If it were the engine, it would be poor ALL the time.

I've had the car for about a month with the knowledge of the power loss, I did drive the car. I was suprised how slow it was.

I will plod on with it, cant go no further untill Miltek is put on, as some of you have said in the past, the Hayward & Scott package losses these engines alot of power. And the power figure someone quoted in one of the posts (42BHP loss with it fitted) the power figure I have is hardly supprising. Looking at my wheel power to most of the graphs posted on here, its better than some 2.3's. Not to say that there is anything wrong with anyone elses.

I just wondered if anyone had encountered similar problems. I will post my findings on here as soon as its running pukka.

DAWIEM3,

I hope so too  I am determined to get down to the bottom of it, even if it does mean stripping out all the internals!

Uwe,

Intersting plots comparing different engines. Though my plot is well down the list, your last one seems to be almost a mirror of mine, just 35 hp more everywhere above 4000rpm! How come yours doesn't rev out higher with peak power higher up as I thought you had some cams fitted?

Is Jon's 2.5 a standard engine? The shape of the curve is so similar to mine, just lifted up somewhat!

Davie's 2.0 litre is amazing! such a smooth curve for a highly tuned motor.

Excellent stuff - thanks.