6.4 mcc tuning pulsewidth

[brewster]

how does the pulse width work. Just looking at the canned tunes on my mini max. noticed the numbers are smaller on a cold engine and numbers get bigger on a warm engine. I figured a bigger number would be more fuel but it seems to be the other way around. Smaller pulse width flows more fuel?

 

[ckrueg]

how does the pulse width work. Just looking at the canned tunes on my mini max. noticed the numbers are smaller on a cold engine and numbers get bigger on a warm engine. I figured a bigger number would be more fuel but it seems to be the other way around. Smaller pulse width flows more fuel?

What tables are you looking at? Pulse width is unchanged between temperature tables. And as pulse width increases so does fuel mass for any given fuel pressure

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[brewster]

sorry yea im just learning the lingo and my way around the software. I was actually looking at the pre injection tables and thought it was a measurement of pw. trying to remove fuel at specifically low boost and throughout.

 

[brewster]

anyway to change the title of this thread lol

 

[Shifty44]

anyway to change the title of this thread lol

Got any tips for tuning on stock vgt turbos? Want a solid tune until I go non vgt. This engine runs a lot of boost at any given load and it’s a lot to compress which I think is harder on the engine. Looking for 1:1 boost to back pressure tune if possible. Also want to run less boost for the load. Kinda crazy seeing it at 15-20 ish psi just cruising at Highway speeds. 6.7s and 6.0s seem to need a lot less boost to make the same power. Any help would be appreciated