Hypertech installed - My take
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JK Super Freak
Joined: Mar 2008
Posts: 1,176
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From: Springfield, MO
Hypertech installed - My take
After reading a lot of the discussion on here, I finally decided to give the Hypertech programmer a stab. Unfortunately, I changed a few things at the same time so my mileage recording will not really be accurate, but I might deprogram the hypertech for a few tanks to see what the difference in MPG truly is. Here are my thoughts:
I installed the Hypertech at the same time as my RR front bumper. I only ran about 3/4 of a tank this way before putting on the MT's, but I did notice the computer creeping up slightly. However, I don't think this will translate to any significant improvement in MPG over time. However, even though I doubt any MPG improvement, I was able to determine a measurable torque/HP improvement.
Now... before anyone goes off on measuring accuracy, I've used this same method when working on other vehicles in the past and find it is usally a pretty good indicator. For those of you familiar with the Springfield/Branson area, highway 65 between Springfield and Branson has some fairly significant hills that the locals call mountains.
I live in between Springfield and Branson, so I have traveled this road quite a few times and know how the transmission shifts when going up the hills.
My first test (with the SRA's) I found that there was a slight improvement in the usual 2000 RPM range (at 68 MPH), but it still had to shift from OD to D and then down into 2 by the top of the hills. Normally when I get to this stretch of highway, I just kick off the OD, and it still ends up shifting into 2 by 3/4 of the way up the hill. This time, I kicked off the OD and ran the whole road in D, noting that it NEVER had to shift into 2 going up the hills.
What this really means is that the bulk of the improvement was at the 2500-2800 RPM range. Really handy for us guys who drive with the OD disabled for towing or hills, but on flat road where your RPM is around 2000, the difference wasn't all that dramatic. Here is the other part I have noticed, though... on the hills like this, the MPG sensor doesn't drop drastically when I disable the OD, which it used to do quite significantly. (Used to go down 1MPG by the time I got to branson, now it is .2 MPG)
This really had me feeling good until I put on the MT's, at which time I took a 1 MPG hit. (hand calculated over two tanks). I like the ride with the MT's enough that I'm not going to complain about it, but unfortunately the large loss in MPG from the tires pretty much invalidated a lot of the calculations I have been keeping historically.
All of that said...
... I think I would buy the Hypertech over again if I had it to do over again. The increase in HP at 2500 RPM's is significant to me because it keeps me from hitting 2nd (4300 RPM) on the hills. However, if you are one of the people with a manual transmission who always shifts at <2500 RPM's, you probably won't see any measurable benefits.
I installed the Hypertech at the same time as my RR front bumper. I only ran about 3/4 of a tank this way before putting on the MT's, but I did notice the computer creeping up slightly. However, I don't think this will translate to any significant improvement in MPG over time. However, even though I doubt any MPG improvement, I was able to determine a measurable torque/HP improvement.
Now... before anyone goes off on measuring accuracy, I've used this same method when working on other vehicles in the past and find it is usally a pretty good indicator. For those of you familiar with the Springfield/Branson area, highway 65 between Springfield and Branson has some fairly significant hills that the locals call mountains.
I live in between Springfield and Branson, so I have traveled this road quite a few times and know how the transmission shifts when going up the hills. My first test (with the SRA's) I found that there was a slight improvement in the usual 2000 RPM range (at 68 MPH), but it still had to shift from OD to D and then down into 2 by the top of the hills. Normally when I get to this stretch of highway, I just kick off the OD, and it still ends up shifting into 2 by 3/4 of the way up the hill. This time, I kicked off the OD and ran the whole road in D, noting that it NEVER had to shift into 2 going up the hills.
What this really means is that the bulk of the improvement was at the 2500-2800 RPM range. Really handy for us guys who drive with the OD disabled for towing or hills, but on flat road where your RPM is around 2000, the difference wasn't all that dramatic. Here is the other part I have noticed, though... on the hills like this, the MPG sensor doesn't drop drastically when I disable the OD, which it used to do quite significantly. (Used to go down 1MPG by the time I got to branson, now it is .2 MPG)
This really had me feeling good until I put on the MT's, at which time I took a 1 MPG hit. (hand calculated over two tanks). I like the ride with the MT's enough that I'm not going to complain about it, but unfortunately the large loss in MPG from the tires pretty much invalidated a lot of the calculations I have been keeping historically.
All of that said...
... I think I would buy the Hypertech over again if I had it to do over again. The increase in HP at 2500 RPM's is significant to me because it keeps me from hitting 2nd (4300 RPM) on the hills. However, if you are one of the people with a manual transmission who always shifts at <2500 RPM's, you probably won't see any measurable benefits.
