Speaking Of P1211...

[cleatus12r]

Originally Posted by theSLEEPER

That's exactly what I thought. I don't want something dumb like a disabled SES, just an actual cure.

Can you still make power at higher RPM's without hanging the injectors open for a long time? Too much pulsewidth at high RPM's is what causes that popping sound right? Or is that a rev limiter?

I wish there were an easy way to convert my splits to singles...

Yeah. There is a way to do it.

More injection pressure commanded at high loads/RPMs.

The injection pressure will kind of work at an inverse (opposite direction) to pulse width up to a point. The point is different for every truck.

If you have 4mS of available pulsewidth at 3100 RPM and your tuning is calling for 2800 PSI of ICP at that point, then realistically you should be able to have the tuning call for 3000 PSI and be able to inject the same amount of fuel in 3.6 or 3.7 mS. This will allow you to run a slightly higher amount of fuel for any speed above 3100 RPM and still keep your pulse width below the threshold...... although a weak pump is a weak pump so if it can't keep up with either scenario then you need a new pump.

The "threshold" is where the PCM and IDM cannot maintain a specific pulse width due to electronic capabilities. The "popping" you mention comes from tuning that calls for too much pulse width and the IDM just gives up and fires an injector when it can. Here are a couple videos for you:

http://www.youtube.com/watch?v=lWU2R1IyouQ


http://www.youtube.com/watch?v=0l7GmU1vvKo

Just ask if you need anything else.