Quote:
Originally Posted by mwebb
so
for better FE , why not re install the original software ? your tampered with software is probably not an improvement in anything anyway .
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I disagree with this. Stock performance tunes tend to improve performance/power by leaning out the AFR and increasing the timing, both of which help with fuel economy.
I'm in a similar situation to
musasabi, and from my experience thus far, boost is generally bad for fuel economy. Part of the reason is as boost increases, the AFR will get richer, and you are tracking further away from stoich.
The 80% load might still be accurate; however, if you can get a map of your boost profile, you'll be able to tell what your rpm range is. For me, as long as I stay under 2,500-3,000 rpm, I'll be generating little to no boost even at 80-100% load.