It is indeed a BMW engine. But that does not matter, unfortunatly how the turbo works does. The BMW engine in questions EDC and turbo control is pretty basic and does not have an electrically controlled waste gate. It is pneumatic so what you described cannot happen. By the way the turbo boost is not altered to suit the fuel being injected. The fuel injected is change to suit turbo boost. As it is in all fuel injected turbo engines. A little more study required me thinks. Don't try to teach your granny how to suck eggs.
Yeah we can do. All i am trying to say is don't believe everything you read in manufaturers bumf that's all. Sorry if you find the truth patronising. You tried to lecture me on how a turbo works. You then say that turbo boost is adjusted by the ECU to match fuel quantity. When it is the other way round. There is nothing wrong in having limited mechanical knowledge and a thirst for more. But a little knowledge is a dangerous thing sometimes. Good luck with your bolt on parts, but don't be surprised if they go tits up and you have to take your car to someone like me, who i am sure will be happy to relieve you of lots of gold bars to make it work. PAX.
Could not have put it any clearer myself Wammers...
I have to dissagree with the Only Fuel statement pretty strongly. I can't speak for a power box on a P38 as I have never fitted one, but a remap on a turbo diesel works in the following way.
The ECU controls all elements we are talking about. Fuel, boost pressure and turbo initiating settings.
The remap does the following. lowers the initial turbo 'switch on' by somewhere between 2 and 500 revs, model depending.
on a variable speed turbo, such as on the X5, it increases the turbo spin rate for a given revs, probably mostly as a direct result of initiating it sooner.
increases the peak boost level achievable, to match the additional fuel being fed.
By simply throwing more diesel into the cylinders you would not achieve the the power gains you can get.
Now, it may be different using an inline power box, that I don't know, but a true ECU remap done on a rolling road like Evolve Automotive do does more than just fuel.
----------------------------------------------------------------------
Above your first post see highlights in red and blue.
----------------------------------------------------------------------
Below your later statements saying you did not say what you said above.
Colour coded for easy identification.
Who said anything about the ECU controlling the Turbo.....what a numb nuts.
I never said the ecu adjusted the boost to match fuel.
When in an hole stop digging for christ sake.
No problem my friend each bit of knowledge gained is another step forwards. I have been at this game for 50 odd years and still learning. At my age it's trying to remember that is sometimes the problem. The boy racer was not aimed at you in particular. I built an RS turbo for my lad a few months ago and set it at 8 psi, standard for that car. He took it to a tuning shop in Blackpool for set up. I told him not to boost it more than a maximum of 10 psi. The idiots set it at 16 psi. It is now in my garage with a blown piston. So he has learned the hardway to take notice of the old man.
raise:
Welcome To LandyZone, the Land Rover Forums!
Here at LandyZone we have plenty of very knowledgable members so if you have any questions about your Land Rover or just want to connect with other Landy owners, you're in the right place.
Registering is free and easy just click here, we hope to see you on the forums soon!
