Does this sway anyones answer? Or perhaps invite a response even.
The stock air-box
> just has too small of an inlet and outlet. In addition the software is custom
> for the air mass meters because the change in voltage from the larger air
> mass meters must have the load columns on the matrix rescaled. Other wise the
> ECU will be selecting the wrong values for fuel mixture,ignition and camshaft
> timing as well as drive by wire mapping. The Dinan air mass meter~s also use
> an external air temperature sensor instead of an internal stock unit. This
> improves accuracy to the ECU on hot days when the stock one will heat soak.
> Thisis because the stock air intake temperature sensor is located in the air
> mass meter and gets heat soaked from under hood heated air. This results in a
> power loss because the ECU thinks it is hotter outside than it really is.
> This new sensor also requirescustom software. Three months alone were spent
> on understanding the temp sensors and how it heat soaks and how to reduce
> this problem. No other company intake system has had as much research and
> incorporates as much hardware and performance.
>
> Even with all of this work, there is only 6-hp possible to be had in the
> entire air filter and air intake plumbing area on that engine. I know this
> because we start our R & D by removing the whole intake air-box assembly and
> replace it with very large straight plumbing that completely exits the engine
> compartment just to see what the potential is. This is done so we can see if
> it is a viable product to make and to see how close we are to the optimum
> power that can be achieved when we are finished. The cold air intake
> increased flow did make the large air mass meters more effective, In fact
> there is more power in the large air mass meters than there is in the air
> filter replacement. The combination of the two will net 11 hp, 5 from thecold
> air intake and 6 from the air mass meters! The BMW engineers did a very good
> job. Many companies are claiming power from a replacement element in the
> stock air-box. We have sent stock paper filter elements as well as our
> filter, the K&N and a fourthbrand that I can't remember, to a laboratory for
> a flow measurement and a measurement of particulate matter trapping ability.
> The lab tests show that the stock air filters perform very well and there is
> no power to be had from removing the stock elementsand replacing them with
> other filter medium.
>
> I know our system looks expensive but if you look at the content ours is
> actually a good value. It is much simpler and less costly to make a ram air
> intake for the stock air box than to make a whole new intake track like we
> do. I am veryglad you liked our wheels. I am sorry that we cannot sell our
> large air mass meters without our cold air intake or software but as you can
> see it just wouldn~t work. I hope this technical information helps.
I'm being lured in and loving it.
Linear Mode
