Taming Large Injectors

[907DAVE]

Just a MFD adjustment or way more?

[cleatus12r]

Mostly the base pulsewidth map followed by MFD then computed SOI then ICP.

[cleatus12r]

Here's something over at the Nation that will make you see where PW adjustments will come in really handy:

Compare each injector (particularly the ones with larger nozzles) for given data like ICP and PW milliseconds.

Injector Flow Data - Powerstroke Nation

[907DAVE]

Just saw that this morning, very cool!

What changes would be made to the SOI?

Use less advance because of the higher injection rate?

[cleatus12r]

Exactly.

You'll get more fuel in less time (crank rotational time) with larger nozzles so therefore you'll want to start the injection event a little later.

[907DAVE]

Would you use less advanced SOI in the higher ICP ranges or would it be a "global" thing?

[907DAVE]

Never mind........should pay more attention sometimes.