aaronb
I'm Awesome
Mine has been tuned by a local performance shop.had them correct the Speedo when they did it.
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After gear swap I had to solder jumpers in cluster.how is everyone with "non" stock tires figuring their mileage? are you factoring in the % change in the speedo from stock?
my '98 rcsb, 5.7 w/170K, 4L60, 3.42'sand stock 265/75-16 was getting 12.5-13 highway at 74 mph.....8-10 in the city proper. i pass everything i can at WOT.
after i blew all that up i now have the GM Performance HT383E(w/ Voltant AB, JBA shorties, Magflo non CA cats and JBA single cat back), 4L70, 3.42 and 265/70-17 Duratracs getting 12.5-13.5 highway at 74 mph.....city driving is around 10. i should try it @ 65, but i'm impatient.
when i tune it i'm sure the fuel economy will go up.......as will the power.
i have a tonneau cover too.
how is everyone with "non" stock tires figuring their mileage? are you factoring in the % change in the speedo from stock?
my '98 rcsb, 5.7 w/170K, 4L60, 3.42'sand stock 265/75-16 was getting 12.5-13 highway at 74 mph.....8-10 in the city proper. i pass everything i can at WOT.
after i blew all that up i now have the GM Performance HT383E(w/ Voltant AB, JBA shorties, Magflo non CA cats and JBA single cat back), 4L70, 3.42 and 265/70-17 Duratracs getting 12.5-13.5 highway at 74 mph.....city driving is around 10. i should try it @ 65, but i'm impatient.
Funny thing My burb has TBI 454/4L80 with 4:10's and I put on 285/70/17s and with the conversion was mid 7's, stock tires 245/75/16 was 9. (it goes up about 1.5 mpg or so when my wife isn't commuting 5 miles in it...) I got a drac from the junkyard pulled up the converter and a 245/75-16 with 3:73 drac is set about as close as I could get it. All my math was backed up with gps speedo check.
More to this post I drove a 97 RCLB 350 4:10 truck for work a few years ago and it got at most 12 at least 10.8, no matter how I drove or with a small trailer.
The 94 K1500 ecsb gets 12.5-14 most the time. With canopy or soft toneau cover. It got high 15's with no cat or 02 sensor highway at 70 with motorcycle on a small trailer (probably under 800lbs bike and trailer)
After gear swap I had to solder jumpers in cluster.
In an 88 to 94ish ( I guess ) the change of any type of drive line ratio change has to be addressed in the back of the gauge cluster. There are like, .02 amp fuses and from the factory depending on tire size, gears, whatever, they pop the fuses they don't want for the proper jumpers to still have proper continuity. There is a chart somewhere for which fuses you want for tire and gears. Simply have to pull cluster and cut out unwanted fuses and solder in jumpers where you want or solder in dipswitches for easy change later on. New vehicles you can just plug in a Doo dad and push a button.i don't understand this....would you explain please?
In an 88 to 94ish ( I guess ) the change of any type of drive line ratio change has to be addressed in the back of the gauge cluster. There are like, .02 amp fuses and from the factory depending on tire size, gears, whatever, they pop the fuses they don't want for the proper jumpers to still have proper continuity. There is a chart somewhere for which fuses you want for tire and gears. Simply have to pull cluster and cut out unwanted fuses and solder in jumpers where you want or solder in dipswitches for easy change later on. New vehicles you can just plug in a Doo dad and push a button.