MicroSquirt.com read only forum (Jan.15,2018)

Throttle position is reflected in the manifold pressure

Hi Lance.

The above is kind of the point im getting at. yes, tps is reflected in the manifold pressure, but, you can often have different throttle positions, and yet get the same manifold pressure. Best example i can think of is:

If you ...

MegaSquirt responds to changes in Manifold Absolute Pressure in order to calculate fueling requirements. As you stated above, there are times when an increase in throttle position makes no change in manifold pressure. In these cases, of course you still want more fuel, and that's where AE ...

Hi there.

No, i haven't yet, but i defo will be. I am very demmanding of my setup, so am just doing as much reserach as possible.

The car runs boost of upto 36psi, but with vey nice off boost manners. I have no doubt that i will be able to acheive good driveability with MS - i have done in past ...

Thanks for the link, interesting reading.

However, that seems to be dealing in transient fuelling. What i'm talking about isn't really transient - the throttle position essentially effects the VE of the engine, for a good few seconds at a time if not more - longer if the turbo is smaller and spools ...

having read through the manual, it seems that tps input is only used for accel/decel fuelling?

On my car, in a high gear i can apply small amounts of throttle and see a bar of boost. I can also floor thr throttle, with the car pulling much harder, and not have any increase in MAP if the boost is ...