john hennessy wrote:
all of your statements may be correct but how relevant are they in this application, if i had started with a megasquirt and E85, controlled my fuel/air ratio with a map sensor, ran the boost through an intercooler and controlled boost with a dump valve then i dare say you could have been of great assistance but that's like saying " if i wanted to go there i wouldn't start from here".
sounds very turboish to me
Reread what I wrote. I offered up options that didn't include a MAP sensor, and I even explained what Kurt meant by his post when you lashed out at him.
Quote:
instead, it might be better to explain how my factory pcm handled the modifications and what areas needed to be modified to suit by the addition of a tune
...
it may require exactly that and if we reach that point where the factory pcm cannot be modified to the extent needed that will certainly be an option.
You mention the "addition of a tune." In modern terms, that means you're purchased a tuning device and tune from a vendor to be loaded onto your factory ECU. These usually run at least $500.
I'm going to go ahead and guess that you're not planning on doing this, but instead you're looking for a way to hack into the signals feeding the ECU and try to get it to run the engine properly. You need more than a few resistors, some wires, and some solder to trick a modern ECU into doing something it doesn't want to.
One could build a circuit to amplify the voltage signal between the MAF and ECU so that the ECU believes more air is coming so it feeds in extra fuel. But how will you deal with ignition timing? Inlet air temperature and associated protection? Knock detection?