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Topic Review (Newest First)
10-27-2013 01:39 PM
RoadiJeff
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.
10-27-2013 01:26 PM
EdWhite07642 [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]
10-27-2013 01:25 PM
EdWhite07642
Quote:
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.
10-27-2013 01:23 PM
EdWhite07642
Quote:
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.
09-30-2013 11:53 AM
efm-7 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.
09-30-2013 11:27 AM
patreb 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.
09-30-2013 10:17 AM
MOPWR2U
Quote:
Originally Posted by Thracks View Post
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?
09-30-2013 09:27 AM
efm-7 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.
09-25-2013 12:04 PM
michiganadam
Quote:
Originally Posted by Thracks View Post
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.
09-25-2013 11:42 AM
Thracks
Quote:
Originally Posted by michiganadam View Post
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.
09-24-2013 11:53 AM
fergusoneddie Is this out yet? Superchips Trail Dash If so. Has anyone used it on an 012?

Thanks,

Ed
09-24-2013 11:39 AM
michiganadam Nothing on my jeep lags whatsoever.
09-24-2013 11:33 AM
Thracks 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.
12-20-2012 07:09 PM
50 Something
Quote:
Originally Posted by calvarycoffee View Post
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?

50 Something
12-20-2012 05:35 PM
efm-7 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.
12-20-2012 04:01 PM
MikeK46 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.
12-20-2012 01:08 PM
JeepHerz
Quote:
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).
12-20-2012 01:03 PM
efm-7 Coming from a TJ with the 6-speed, I definitely notice it, and it's kind of driving me up the wall. It seems that pushing the pedal down slightly, there's nothing, and then it jumps up to 1500 and then 2000 rpm quite quickly. I'm used to engaging the clutch at 1000rpm, but I can't hit that RPM. I sat in my garage in neutral trying to see if I can keep the revs at 1000. it's almost impossible!

So really, when starting off in first, i'm doing it by "muscle timing" and praying that I don't overshoot it or worse yet, stalling.

This morning, I was trying to back into a parking spot and I stalled it.. TWICE!! how embarrassing!
11-24-2012 09:40 AM
J GLASGO I have got used to it in my 12 6-speed. I still hate the lag,and some occasions i feel like i am slipping the clutch,which is not good in the long run.I would buy the booster if it was 200.00,but 300.00 is just insane. I even called to order it once,but no answer,and no call back. It seems like the guys that have bought it are happy with it,and i am sure being able to precisely control your engine speed would help with the longevity of a clutch.
11-22-2012 12:45 PM
brains i've noticed a slight lag on my 2012 rubi 6 speed but only in 1st gear from a stop. the rest of the gears don't have the issue, though. accel and throttle response is good otherwise.

now, my 05 TJ, that thing was a rocketship if you wanted it to be. still, not enough of an issue for me to warrant 300 bucks on.
11-22-2012 12:31 PM
Mopar2Ya 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.
11-22-2012 12:10 PM
Posts On Percocet Sprint booster worked great on my 12 Vette.
11-22-2012 11:53 AM
positrak What year is that? 2011 I got rid of had it bad (auto rubicon), 2012 same vehicle does not have it at all. There is a so-called safety feature where if you do accidentaly smack the accelerator hard while off road (and on road), the lag is there to prevent it running away. You'd have to be crushing cockroaches to invoke it though.
11-22-2012 11:17 AM
bloodfart
Quote:
Originally Posted by rics1997

My 2010 really doesn't have a lag
2012 manual...i press the pedal even a quarter inch and the jeep imediately starts accelerating...
11-22-2012 02:45 AM
rics1997
Quote:
Originally Posted by SilverSport View Post
Night and day improvement for me between even my 2011 and my 2012.
My 2010 really doesn't have a lag
11-22-2012 02:00 AM
JeepHerz Ok- so forgive me but I am confused.
Wouldn't a sprint booster, from what I understand, make it worse on a trail? I would think that throttle sensitivity while crawling at least- would be the last thing you want. Or are we talking more mud/heavy trail running? The website claims faster gear changes- does this seem to be true? Do the shift points change- or does it just change gears quicker?
OP- do you have 3.21 gears? They tend to shift at lower RPMs- which means you kind of have to floor it to get it going (or downshifting) sometimes. Seems like it can take forever to shift. You might be feeling a combo of throttle lag and the low gearing.
WELCOME to the forum!
(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.)
11-22-2012 12:10 AM
LudlowJKUR
Quote:
Originally Posted by GregU
Is this an auto tranny only issue? I haven't noticed on my new manual transmission.
I have a manual and I have noticed it quite a bit
11-21-2012 11:52 PM
GregU Is this an auto tranny only issue? I haven't noticed on my new manual transmission.
11-21-2012 11:35 PM
LudlowJKUR ...interesting
11-21-2012 09:53 PM
Lotrat I haven't noticed it with my manual. Guess I need to go stomp on it. BRB.
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