hypertech help...
02-03-2009, 03:38 PM
#11
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ok. what is a tpms and stacking?
allright. i'm lost now. what is a tpms, why do you wish to disable it, and lastly, what is aev doing with their reprogrammer that allows you to stack it with the hypertech?
yellow jeeps are cool too...
yellow jeeps are cool too...
02-03-2009, 04:52 PM
#12
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Stacking- Means that we can use the AEV with the Hypertech and they should work in harmony with each other.
02-04-2009, 04:08 PM
#13
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thanks big guy.
wondered why that f-n' thing kept popping up on my display after i got rid of all my codes.
it usually only comes on when it gets cold.
wondered why that f-n' thing kept popping up on my display after i got rid of all my codes.
it usually only comes on when it gets cold.
02-04-2009, 04:18 PM
#14
JK Enthusiast
02-04-2009, 04:22 PM
#15
JK Enthusiast
Rubi (4.10 axle ratio) w/ auto vs: Sahara (3.73? axle ratio) w/ manual is not a valid comparison. Apples and oranges. Your auto trans is less efficient than a manual gear box and when you factor in the different tires and gear ratios you create even more of a split. You'll likely never match his mpg due to physics.
02-04-2009, 07:02 PM
#17
JK Enthusiast
I also have 37" tires, stock Rubicon gears (4.10), and manual 6 speed, and find that depending on the tire size you program it to and the tire pressure in your tires the MPG varies greatly and the accuracy of your speedometer.
My tires are inflated to 33psi and Hypertec programed to 36" tires... at this combination speedometer seems to be accurate and MPG at about 15. When I ran 31psi speedo was about 1mpg off and MGP looked great at 18/19mpg, but was wrong.
So from my experience if you want to feel good about your perceived mpg then you can set it so, but it is just in your mind. First realize a 37" tire is not 37" tall at all tire pressures and differs by tire brand. My experience tells me that tire pressure affects how tall your tire sits as well. And my experience tells me that you can't just program it to the tire size printed on your tire.
If you verified your speedometer is accurate then the reported MPG should be accurate. Use a portable GPS that tells you your speed to compare. Other ways I can think of are not accurate.
My tires are inflated to 33psi and Hypertec programed to 36" tires... at this combination speedometer seems to be accurate and MPG at about 15. When I ran 31psi speedo was about 1mpg off and MGP looked great at 18/19mpg, but was wrong.
So from my experience if you want to feel good about your perceived mpg then you can set it so, but it is just in your mind. First realize a 37" tire is not 37" tall at all tire pressures and differs by tire brand. My experience tells me that tire pressure affects how tall your tire sits as well. And my experience tells me that you can't just program it to the tire size printed on your tire.
If you verified your speedometer is accurate then the reported MPG should be accurate. Use a portable GPS that tells you your speed to compare. Other ways I can think of are not accurate.
02-04-2009, 07:30 PM
#18
JK Enthusiast
I also have 37" tires, stock Rubicon gears (4.10), and manual 6 speed, and find that depending on the tire size you program it to and the tire pressure in your tires the MPG varies greatly and the accuracy of your speedometer.
My tires are inflated to 33psi and Hypertec programed to 36" tires... at this combination speedometer seems to be accurate and MPG at about 15. When I ran 31psi speedo was about 1mpg off and MGP looked great at 18/19mpg, but was wrong.
So from my experience if you want to feel good about your perceived mpg then you can set it so, but it is just in your mind. First realize a 37" tire is not 37" tall at all tire pressures and differs by tire brand. My experience tells me that tire pressure affects how tall your tire sits as well. And my experience tells me that you can't just program it to the tire size printed on your tire.
If you verified your speedometer is accurate then the reported MPG should be accurate. Use a portable GPS that tells you your speed to compare. Other ways I can think of are not accurate.
My tires are inflated to 33psi and Hypertec programed to 36" tires... at this combination speedometer seems to be accurate and MPG at about 15. When I ran 31psi speedo was about 1mpg off and MGP looked great at 18/19mpg, but was wrong.
So from my experience if you want to feel good about your perceived mpg then you can set it so, but it is just in your mind. First realize a 37" tire is not 37" tall at all tire pressures and differs by tire brand. My experience tells me that tire pressure affects how tall your tire sits as well. And my experience tells me that you can't just program it to the tire size printed on your tire.
If you verified your speedometer is accurate then the reported MPG should be accurate. Use a portable GPS that tells you your speed to compare. Other ways I can think of are not accurate.
02-04-2009, 08:21 PM
#19
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hm... well completely stock my computer read 23mpg avg, then after i went up to 37's before the hypertech it read 16mpg, then when i added the hypertech i looked up the tire dimensions on their website and it said actual tire height is 36.9, so i ended up selecting 36.75 on the hypertech so it should be giving me a slightlyyyyyyyy lower mpg reading than my true reading...
i haven't factored in psi or taken an actual measurement of the tires so maybe one of these days i'll do that and see if i get different #'s
i haven't factored in psi or taken an actual measurement of the tires so maybe one of these days i'll do that and see if i get different #'s