Supercharger install

The engine should be run rich, this for cooling raisons, but of course not to rich.
Doesn't it drive at all Egil?
It takes a while for the dme's to adjust....(perhaps taking the pluspool from the batteries off for a night?)

noggie, I am truly sorry to hear about that.

But to give my two cents worth of thought:
With your more aggressive cam setup, your car should run lean, if it would run with a wrong ratio. The reason being is that your cam setup allows more air into the engine (at higher rpm). So, I would understand some very rough idle, but not any rich ratio when over 2000rpm.

On another note, aggressive cams do alter the air intake, but not to the point, where another programming would render the car unusable.

Maybe, it's other changes from Hardge (or some defect) that does that.

Let's try to wrap our head around this:

Sympton: Your car's running rich and the DMEs and EML works.
Possible faults:
1. Bad massflow sensor(s) (or badly connected)
2. Bad oxygen sensor(s) (or badly connected)
3. Fuel pressure too high.

And.. I have my money on number 3!
Try to measure your fuel pressure, if you want to. It should be at 3bar (the procedure is described in the repair handbook).

If you have significant high fuel pressure (say at 5bar) then it will run incredibly rich and behave as you have described. It's just very, very easy to mistakenly destroy or at least alter the fuel pressure regulator or the tank vents when working intensly on such a project.

But again,
just my two cents.

Don't give up!

The cams will not make a difference to the fuel ratio as the air intake is measured by mass air flow. Put the stock injectors back in for now or reduce fuel delivery by lowering the fuel pressure. At high rpm and full boost the very rich mixture will still burn, hence its ok until you shift and the revs drop.

8Tech.

Maybe Hardge has increased the fuel pressure. Then the original pressure regulator valves should make it all good.

there are variable fuel pressure regulators on the market. maybe a little google search will do the trick.

But before you continue, buy/rent/borrow a fuel pressure gauge and make sure that I am not way off with my interpretation.

Noggie, it must be frustrating, but just remind yourself of JFK's famous speech in 1962 which is very topical at the moment...

"we choose to do these things not because they easy but because they are hard"

Once you have sorted it you will have something special to be proud of

I don´t know what system told you 250 EUR per pressure regulator. My list has them for 70 EUR each plus taxes which still is not cheap considering it being just a small tin

The BMW part number is imprinted on the regulator, see here:

This should allow you to compare it with the OEM parts number to see whether it is different or not.

Cheers
Reinhard

well, it's Reinhard again, proposing the quickest problem assessment!
That's something that Egil can do in 5min

Zitat von Noggie;66561

I will check PNR when I go to the garage tomorrow.
(my garage is 15km away from my house)

as for the part price.
A BMW licenced webshop (oem parts) quotes the 3 bar pressure regulator BMW pnr 13531715685 for cars up to 1/92 at 2,242.00NOK, which is 249.433 Euros today.
Real OEM quotes this at $326.97 too.

Not the same part as your pictured 1353 17 21548 regulator.

In my line of work Tony, we say "Hard is easy, Impossible just takes a bit longer"

I do know of one soulution though, get a Haltec or megasquirt or something like that and completely remove the stock injection and engine control system.... but that would probably cost me more than 4000 euros to do.

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I was thinking about this earlier today. One option is as you say to get the fuelling map completely custom made for your engine/SC set up. I don't know how straight-forward this would be for your M70 or even if it's possible to re-programme the ECU's. In addition to your after-market options you might also think about Emerald - fully programmable and relatively straightforward but even so, still complicated to do it this way.

I was Quoted Circa £1500 for a bespoke "Live remap" carried out by a Ex F1 engineer, I don't think your going to need this as I'm sure John will come up with a plan

Egil, sounds like you're having a nightmare. If it's any consolation UK dealer service rates are also over £100ph but your new car prices are crazy! Have you thought about a coup?

I'm sure a breaker would have oem regulators cheaply and I guess they'd be the same as the e32 so should be relatively plentiful. I can foreward anything you find in the UK.

well then.. you've still got too much fuel. So it's either the fuel pressure (there may be various sources for excessive fuel pressure or your sensors (massflow, lambda) or the DME chips.

I'm sure you'll figure it out!

We're here for you to give you idiotic advice whenever you seem to need any

Is there a difference in smoke of any exhaust Egil?