CosRush

On a standard Cossie......

You set preload on actuaotr to half a hole.
Then run engine and increase upto standard boost pressure.

So where does the ecu then control the boost pressure?
If because after a problem the engine is producing more boost than t should it senses this and closes the amal so as to put full pressure to the actuator?

If so, then what happens when we put a stage 3 chip in?

Set up boost the same way?
Then i assume the chip has the new higher boost control programmed into it, so it knows not to cut in when it senses the new higher boost.

So does that mean on the Stage 3 conversion using the -31 is setup exactly as it would be for a nrmal actuator (half a hole) and then once roadtesting tweaked upto the normal running boost pressure?

And then...... what effect would using the standard Amal Valve jetting on the stage 3 conversion have???


Hope someone can answer all these points....

Stu @ M Developments

iTrader: (12)

Amal valve is used to lower boost when required, and how much it can do so, obviously depends on the jetting used.

Ask the chip writer for his recomendations.

CosRush

Thanks for the reply Stu, although i was looking for a bit more in relation to the questions....

Im going to get it installed and setup next year but i'd still like to try and understand what exactly is going on.

So when would it be required? is it all the time or only when for whatever reason it overboosts?

I assume one of the parameters of an uprated chip is to increase the boost limit, else if you wound up the boost on a standard setup it would cut out, right???
So does this mean that the increase in boost is done by the actuator and the change to the chip's limit is for the purpose of over boosting protection???

Is this where the jet being too big/too small/spikes/held boost etc etc comes in???