Quote:
Originally Posted by soutthpaw
when we say delay are we talking retarding the SOI. where as the SOI offset would advance it??? can u use negative values in that setting delay
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The "delay" is a calculated value that the PCM uses to get the injection timing just right. The injectors do not begin spraying as soon as the PCM tells the IDM to do it. There are electronic, and more importantly, mechanical delays (as well as oil viscosity) that would cause a retarded injection event if there wasn't a compensation.
The "delay" values cause the PCM to anticipate for the injectors' inherent delay.
I wouldn't know about the negative values in the map. I would have to guess that you'd end up with some severe white smoke all else being the same.