JET Chip
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just a thought here: maybe you should break the poll down and have results for both the 3.7 and 4.0 engines and maybe even throw in the manual and automatic for the 3.7
that way its specific for each engine and trans and not a generic study with everything thrown into one group
that way its specific for each engine and trans and not a generic study with everything thrown into one group
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243 Posts
Pretty good idea. Now, if I could only figure out how to change the poll......
You also might include choices for Not Yet, Not Sure, Don't Intend To.
Well, I was looking for some direct feedback from those who have done the mod to help those of us who haven't..
I think the poll as it is good enough.Pretty good idea. Now, if I could only figure out how to change the poll......
Well, I was looking for some direct feedback from those who have done the mod to help those of us who haven't..
Most people post comments anyway.
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2,249 Posts
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2,249 Posts
I ordered a Stage 2 Jet Chip, and am now wondering if I should have just stayed with a Stage 1. I'm worried about hassles with the warranty should something go wrong, and they point fingers at the Jet Chip. (and no, I don't want to uninstall it every time I go in for service.)
There is no way to prove the footprints are from the Jet Chip.
Also you the memory for this kind of info is volatile, all you need to do is disconnect the battery to dump the memory.
I'm not worried, I've had a Jet Chip on my 454 Surburban for 11 years, 130K miles and there have been no problems.
This is a fairly benign Mod.
Ken
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2,249 Posts
So, is it a problem to leave the chip in place when taking the rig in for service? What if they do a flash to the computer? Will the presence of the chip affect that? Will the flash damage the chip?
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9,544 Posts
Well my stage 1 chip is on it's way. I will do some before and after tests and maybe even some video clips...
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9,544 Posts
My stage 1 Jet chip arrived today. After the first installation the transmission was stuck in either second or third gear. It would not change up or down. I removed it and re-installed and then all was fine. Maybe it was not quite all the way home in the housing.
The difference isn't huge, but then again a 10 ~ 14 hp increase pushing a truck with the weight of the Nitro won't be. You can't really tell until you put your foot down then it is noticeable. The shift points are definitely better. Acceleration is better and on the expressway you can really tell when accelerating to overtake.
I haven't really had much time to try it out properly but over the next few days and weeks I'll be taking notes.
The difference isn't huge, but then again a 10 ~ 14 hp increase pushing a truck with the weight of the Nitro won't be. You can't really tell until you put your foot down then it is noticeable. The shift points are definitely better. Acceleration is better and on the expressway you can really tell when accelerating to overtake.
I haven't really had much time to try it out properly but over the next few days and weeks I'll be taking notes.
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15,667 Posts
Yes keep us updated! :smileup: and we want pictures!
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9,544 Posts
No pics yet Dave, but I can do you a nice video clip of me driving down the road stuck in 2nd gear with some rather colorful language and hand signals.....Yes keep us updated! :smileup: and we want pictures!
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Still laughing on that one! :chuckle:No pics yet Dave, but I can do you a nice video clip of me driving down the road stuck in 2nd gear with some rather colorful language and hand signals.....
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9,544 Posts
Well it's been a couple of days now and it seems to have settled down now. I'm not sure if the computer needs to adjust to the new settings but it seems peppier now than when I first installed.
The 50 ~ 80 acceleration is much improved and it seems to cruise at a lot less RPM's than before.
Next tank full I'll do a MPG comparison.
The 50 ~ 80 acceleration is much improved and it seems to cruise at a lot less RPM's than before.
Next tank full I'll do a MPG comparison.
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1,157 Posts
Yeah, the learning process seemed to take a couple of days. Highway performance seems to be the biggest gain, kicking down to pass is pretty nice even.
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9,544 Posts
I agree. The acceleration shift points seem better spaced out too.
I find it tends to drop into second too easily when kicking down though. Hopefully it will adjust that as it ''learns''...
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9,544 Posts
I've noticed too that it runs slightly cooler. The temp gauge would always be right on the center line, summer or winter. But now it is just below the center line on the gauge.
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