Posted by Ken Macfarlane on September 26, 2019 at 07:53:17 from (142.166.168.2):
In Reply to: Re: Stealth posted by John in La on September 26, 2019 at 06:55:13:
There's more to it than that. Chips in newer trucks also adjust: -Injection timing -Rail pressure -Injection cycles -Wastegate management -Egt derating values -DEF use -Mapping limits that protect the catalyst (temps or pollutant levels)
They increase NOx production to gain economy. The power increase aspect leads to extra soot production and higher cylinder temps/pressures that can lead to reduced engine life.
The tuners also might abandon some of the tuning in the common rail models to have fancy lead in injection curves to make the engines quieter. I can't imagine what they gain doing that other than simpler to program.
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