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Old 12-20-2012, 01:08 PM   #31
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Originally Posted by Mopar2Ya View Post
I wish the tuners would release something for 3.6 so I don't spend $ on a SB to only affect the DBW. I want to change shift points more than anything.
From above:
(Also worth keeping an eye on- the Superchips Trail Dash will hopefully come out soon for the 2012+. They are able to re-program shift points right now- the most important thing to me. Plus all the other do-dads- but everytime they turn off the Jeep it all re-sets. Darn Chrylser security protocols. We were really happy with the Traildash on our truck. Like a Procal on steroids..... so I hope they are successful.)

At SEMA, which was October- they said they were almost done. Patiently waiting....(not).

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Old 12-20-2012, 04:01 PM   #32
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I installed the Sprint Booster a few days ago, and it does exactly what it says it will do: you reach a higher throttle percentage faster. There is still "dead space" the first few millimeters of pedal travel, however, simply because that's how the pedal is designed. It can not get rid of that. After that, though, it "ramps up" your throttle application and the RPMs come up quicker. It works as advertised.

Perhaps if it was a sports car, I'd be more inclined to accept the Sprint Booster's functionality. In the Jeep, however, it just doesn't work. You lose throttle control. I could no longer be precise with my throttle application, and often found that I was unintentionally giving too much throttle despite being careful about it.

I rarely drive in a matter that provokes the transmission to downshift, but with the Sprint Booster it was constantly either downshifting when I didn't want it to or bogging the engine unnecessarily, due to light throttle application being amplified. RPMs were all over the place and the transmission was getting quite a workout, as well as the torque converter, which was always locking/unlocking.

In the end, it just did not feel natural at all, and I did not enjoy driving the Jeep with the Sprint Booster on. It made me realize that what I really wanted was not to amplify the throttle signal, but to make the pedal easier to press, which I believe can be done by removing the spring behind it.

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Old 12-20-2012, 05:35 PM   #33
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From what I'm reading, it almost seems like I want the opposite of what sprintbooster does: I want LESS throttle in the first little bit of pedal travel.
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Old 12-20-2012, 07:09 PM   #34
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I always thought the throttle lag was the "hill start assist" always on. I hate it too, btw.
I turned the hill assist off and went through the throttle programing that comes with the OEM program.

Just a thought?

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Old 09-24-2013, 11:33 AM   #35
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The JK throttle is absolutely terrible in both function and design. It has a half-second input lag (as does everything that runs through the awful CAN bus). It has a quarter-inch dead zone with no response whatsoever. If that wasn't enough, when the throttle finally does respond, it's far too touchy. The RPMs jump to ~2.3k and it's impossible to hold the engine speed lower than that. The angle of the pedal is positioned so awkwardly that you have to hold your foot at an extremely steep angle, which, if you wear large shoes, is impossible because of he limited vertical space between intrusive throttle lever and the floor. Rather than the forward/down movement of traditional throttles, the JK throttle just moves forward. To make things worse, it's stuck at a fixed angle. I already have a worn out spot on my rug from my right heel scraping the floor.

The throttle in the JK is by far the worst of any I've ever had the displeasure of using.
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Old 09-24-2013, 11:39 AM   #36
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Nothing on my jeep lags whatsoever.
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Old 09-24-2013, 11:53 AM   #37
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Is this out yet? Superchips Trail Dash If so. Has anyone used it on an 012?

Thanks,

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Old 09-25-2013, 11:42 AM   #38
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Nothing on my jeep lags whatsoever.
Are you sure about that? All the electronics run through the can BUS, and it's the can BUS that has the awful lag. Everything from the horn, to the turn signals, to the throttle has a slight noticeable delay. I tested one at the dealer and it had the exact same lag.
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Old 09-25-2013, 12:04 PM   #39
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Are you sure about that? All the electronics run through the can BUS, and it's the can BUS that has the awful lag. Everything from the horn, to the turn signals, to the throttle has a slight noticeable delay. I tested one at the dealer and it had the exact same lag.
I'm positive, nothing lags on my jeep at all. It is a 2008 X model with nothing fancy though....no power locks, no power windows, climate controls are operated by cables, no navigation system, crappy radio, no steering wheel controls for radio, no cruise control, no lockers.

Mine probably has a lot less can bus use? I'd let you test drive it if you were in my area.
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Old 09-30-2013, 09:27 AM   #40
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My 2013 JK is the laggiest vehicle I have ever owned.

I use my A-pillars as opposed to my highbeams for courtesy signals. highbeams take at least a full second.
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Old 09-30-2013, 10:17 AM   #41
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Are you sure about that? All the electronics run through the can BUS, and it's the can BUS that has the awful lag. Everything from the horn, to the turn signals, to the throttle has a slight noticeable delay. I tested one at the dealer and it had the exact same lag.
I've got a 6.4 Hemi in my Jeep, but I'm pretty sure it runs through the same can BUS system. The computer programming for my engine is the same as the programming for a 6.4 Grand Cherokee or Challenger, but the communication system for the controls on the body (gas pedal) I think use the same JK can Bus.

I don't feel a lag with my Jeep. When I tell it to jump, it ask how high. Seriously, stand on the throttle and all hell is going to break loose. I wonder if it is the JK can Bus system combined with poor low end torque on both the 3.8 and 3.6 engines that causes the lag?
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Old 09-30-2013, 11:27 AM   #42
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Lots of us munual gear drivers complain about the "drive by wire" setup. Removing the inner spring in the pedal assembly helped restore better feel. There is still lag but over time one learns how to compensate for it. I have noticed that I'm beginning to push the accelerator now before I release the clutch. Makes heel and toe shifting a lot less fun.
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Old 09-30-2013, 11:53 AM   #43
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When I first posted in this thread, I complained about the throttle lag with the manual transmission - but I now realized there was a bit more at play.

I used to have a TJ with the I6, 6-speed, 3.73 gears and 28" tires and NO throttle lag.
The new JK - with the same 6-speed, but with 3.21 gears and 32" tires WITH throttle lag.

As a newbie stick driver - I feel like I had a lot of changes go up against, but given the right gearing - I don't think I would have complained.
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Old 10-27-2013, 01:23 PM   #44
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Originally Posted by calvarycoffee View Post
I always thought the throttle lag was the "hill start assist" always on. I hate it too, btw.
Maybe it's my imagination but when I turn off the Hill Assist on my 2012 JK, the throttle seems a whole lot more responsive with lag.
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Old 10-27-2013, 01:25 PM   #45
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Originally Posted by EdWhite07642 View Post

Maybe it's my imagination but when I turn off the Hill Assist on my 2012 JK, the throttle seems a whole lot more responsive with lag.
Typo--a whole lot more responsive WITHOUT lag.
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Old 10-27-2013, 01:26 PM   #46
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[QUOTE="EdWhite07642;5688249"]

Maybe it's my imagination but when I turn off the Hill Assist on my 2012 JK, the throttle seems a whole lot more responsive without lag QUOTE]
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Old 10-27-2013, 01:39 PM   #47
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Quote:
Originally Posted by EdWhite07642 View Post
Typo--a whole lot more responsive WITHOUT lag.
You can edit a previous message up to 30 minutes after you posted it. Click on the "Edit" button, just to the left of the "Quote" button you've already found.

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