Rear wheel BHP E36 Evo

I only ise 1 litre in a full tank so octane reaches maybe 99ron ?

I use it to stop pinking on heat build up in the atmosphere of a rolling road unit.

If you use pure 102 ron fuel and map for it you can see an improvement in power.

I do them for UK fueling 95-99 ron

I also have them for every region so can do them too all parts of the world.

Standard your m3 is mapped for euro fueling and not UK fueling.

I dont have the torque graph here as the run was only done when i had my fcon fitted.

I am doing another run this week so will get the images uploaded here.

I used 98 ron fuel and octane booster (102 ron) as i prefer a higher octane when on the rollers.

We had a car club rolling road in the summer and there were a couple of E36 M3's and none of them scored anywhere near the BMW quoted figure. On the day no car got more than 300bhp at the flywheel with the highest score at the wheels of 246bhp by an e34 M5 3.8. The lowest M3 E36 3.0 was 180bhp at the wheels and the rolling road (Power Engineering) found that the throttle cable had streched and so the car was not giving full throttle. They fiddles with this and it was up to around 220bhp at the wheels which was higher than the evo engined cars. Power engineering claimed that they have never seen an e36 M3 and E34 M5 that has been within 20bhp of it's factory figure. However they explained to us that what they look for in a car is a good power and torque curve.

Generally the BMW owners felt the rollers were reading low. This made me very chuffed as my car was just 11bhp off the Factory BHP figure and 26Lbs/ft above the factory figures Not bad for a twenty year old with 125k on the clock and bog standard.

I see, so what pressure should the standard one maintain the fuel rail at?

Is lack of fuel pressure a common trait with the M3?

Chippeduk

Are you able to adjust the fuel pressure electronically (map) or did you get a replacement higher pressure part?

I'm based near Snetterton but visit Surrey weekly.  You feel the torque falling off a bit after 3 but it feels strong enough up to that.  It'll rev to 7+ and pull hardish on the upchange.

Mechanically it's apparently sound -- no smoke, we have no compression figures though (yet) no faults logged, and all the parameters seemed reasonable (I'm told).  The operator thought it was a sensor.

I'll try and scan it all tomorrow.

Interestingly the VANOS was replaced fairly recently, though no receipt appears in the service history (which is all main dealer).  Anyone know if the cams can be timed wrong?

The key seems to be very very poor fuelling.  He nearly aborted the run because of it, but it started to pick up a little out of the dangerously weak zone.

I'd like to know figures for air flow meter at ~750rpm and ~3000 -- I have logs of these.

chippeduk, I'd love to take you up on your offer and I'd certainly be prepared to pay for your time.

I know it'll be sorted out, I paid 10500 for the car -- 98, 57k saloon so I think the price wasn't unfair.

I'll definitely be inviting the dealer to give me some help Monday though... :)

Andy

Thats awefull,

Where are you based ?

I would gladly take a look at the engine for you (free of course) and check if you have any faults.

Does the car feel slow at all ?

No sorry I'm not.  I'll post the graph so you can all do a direct comparison.  Well unless it's too limp of course in which case I'll claim there was some sort of technical fault posting it.

Andy