I was getting 32 - 33 easily all highway by hand calculations and could get steady 27 - 28 combined city and highway driving.
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I was getting 32 - 33 easily all highway by hand calculations and could get steady 27 - 28 combined city and highway driving.
I don't have a DIC, and i'm a GTQuote:
Originally Posted by Zef_66
I put the PCM in when i rebuilt my top end doing LIM gasket and UIM doorman replacement, I also added a Stage 1 HVTB and a 3" DP at the same time, and i went from avg of 28-30mpg, to like 19-21mpg if my math was correct.
Also have a 180* T-stat
A trip to Champaign and back from here used almost half a tank (little driving around the city, maybe +10 miles for that, so around 110 miles for quarter to half a tank, so somewhere between 25.8mpg to 12.9mpg (quater tank and half tank respectivly) average of the two, ~19mpg
+ or - 5 miles, took a slightly longer trip back, 5 miles difference from first way
That's figuered by hand.
I have found my DIC is within one MPG of reality.
By the way that is with the cruise set at 68.
Yeah, I fill up all the way everytime, so I check my mileage by Calculator at every fill up, , to keep an eye out for problems, before and after the PCM it has always been about 1mpg higher on the DIC than I actually get....
On a side note the higher it goes, like when it is in th 24+mpg range it seems to get really accurate, like only off .1 mpg
mines fairly close, about 1 mpg off, and less than a gallon per fill up (actually got better with the zzp pcm)
I really didn't get a chance to see what happened when I had my PCM re-programmed...I went from running an un-tuned modded GTP, (and I was not getting everything out of her that I should have) to an Intercooled CT Turbo kit with a shift kit. My difference was night and day, but what I loved the most about the tune was the quick shifts...