Surge / Lurchy Throttle response with Superchips
12-16-2009 | 04:48 PM
#21
JK Newbie
Joined: Aug 2009
Posts: 73
Likes: 0
From: San Diego, CA
But at least part the problem isn't how much the throttle responds per unit of deflection of the gas pedal.
The problem I am referring to is that there appears to be zero (or non-detectable) response for some noticeable period of time for any given gas pedal deflection with the stock PCM programming.
The problem I am referring to is that there appears to be zero (or non-detectable) response for some noticeable period of time for any given gas pedal deflection with the stock PCM programming.
12-16-2009 | 04:55 PM
#22
Thread Starter
JK Newbie
Joined: Sep 2009
Posts: 59
Likes: 0
From: Sequim, Wa
Jpop your idea makes the most sense to me.
I will suggest this ti superchips. I have been working with them to remedy the problem.
The new tune the sent is back more like stock where it isn't an on/off switch although the last half of the peddle is dead. Not the first half. Although there is a small dead spot at the start.
Spinlock -
It has nothing todo with delay. I understand all about drive by wire and the delay.
The problem IS how much the throttle responds per unit of deflection of the gas pedal.
I don't think a 9.6:1 compression ratio is really that low
I'd also go ahead and assume companies like Superchips who have been putting out new tunes and programers for years are pretty on the ball about tuning and whats going on inside the engine.
It's kind of like saying Terraflex has no idea what's going on with suspension
Good input into the thread tho thanks!
I will suggest this ti superchips. I have been working with them to remedy the problem.
The new tune the sent is back more like stock where it isn't an on/off switch although the last half of the peddle is dead. Not the first half. Although there is a small dead spot at the start.
Spinlock -
It has nothing todo with delay. I understand all about drive by wire and the delay.
The problem IS how much the throttle responds per unit of deflection of the gas pedal.
I find this post amusing, a 91 octane tune for a low compression engine. Just crank on the timing and raise the peak pressure in the cylinders.
Sorry but these aftermarket tuners most likely dont have any information on what is happening inside the cylinders when the spark happens and the kaboom happens pushing the piston down.
Sorry but these aftermarket tuners most likely dont have any information on what is happening inside the cylinders when the spark happens and the kaboom happens pushing the piston down.
I don't think a 9.6:1 compression ratio is really that lowI'd also go ahead and assume companies like Superchips who have been putting out new tunes and programers for years are pretty on the ball about tuning and whats going on inside the engine.
It's kind of like saying Terraflex has no idea what's going on with suspension
Good input into the thread tho thanks!
Last edited by JonP; 12-16-2009 at 05:13 PM.
12-16-2009 | 06:24 PM
#23
JK Freak
Joined: Feb 2009
Posts: 812
Likes: 1
From: Amish Country, PA
FWIW.......Mine has been updated within the past 3 weeks, so I assume it is whatever the newest version is. I'm also in contact with Superchips now. I have to relay them some info, reflash, and report back with the results. I'll let everyone know.
12-25-2009 | 11:33 PM
#24
JK Newbie
Joined: Apr 2009
Posts: 46
Likes: 0
From: Fruit Heights, UT
For what it's worth I found the lurching to be extremely annoying to the point that I hated the tuner. After experimenting with different settings I finally settled on the 91 setting. Seems less noticeable now and I'm loving it again. The few times I've set it back to stock (trips to the dealer) it's definitely less responsive and sluggish feeling but much smoother. I like it better with the tune but don't enjoy having to spend extra for gas. If SC could dial it in a little bit better or maybe add another setting (since some people don't seem to mind the lurching), that would be fantastic!
12-26-2009 | 04:10 PM
#25
JK Junkie
Joined: Jul 2009
Posts: 2,343
Likes: 1
From: The San Andreas Fault
I think it needs to be pointed out (unless I missed it somewhere) that this issue is *mostly* related to JKs with manual transmission whose driveline has more positive engagement.
The auto slush box seems to compensate very nicely for the sensitive modulation.
The auto slush box seems to compensate very nicely for the sensitive modulation.
12-26-2009 | 04:18 PM
#26
JK Super Freak
Joined: Dec 2007
Posts: 1,320
Likes: 0
From: WI
Maybe there are different maps in a stick vs auto ECU from the factory. Maybe the guys who are making the tuner don't know all the inter-dependencies in all the maps?
12-27-2009 | 03:53 PM
#27
Thread Starter
JK Newbie
Joined: Sep 2009
Posts: 59
Likes: 0
From: Sequim, Wa
The Superchips tuner sucks at neutral throttle; their map is way too coarse. As much as the Hypertech gets a bad rap, it doesn’t have this issue (yes I own both and have spent a fair amount of time driving both). I like the functionality of the Superchips but have been waiting for months for them to address this issue. I’m glad to hear they are finally addressing it. Seems to me that this could be resolved on the chassis dyno in a day or two though; not sure what the hold up is.
If it takes much longer I may just go this route ht tp://www.bgchrysler.com/
If it takes much longer I may just go this route ht tp://www.bgchrysler.com/
Unfortunately
Superchips seems to have given up with me and my issue. I haven't heard anything back for awhile. Hopefully it's just Christmas time, but guy who was helping me seems to be un-responsive and seems to have given up.
Honestly, I'm very disappointed by this. VERY dissappointed. It wouldn't be hard to fix. It would take a little time. But image how much better of a company and product it'd be.
I'll still wait and talk with them a little more to see if we can get it resolved.
It does seem to be a difference between the auto and manual. Which makes sense.
We'll see
Jon
12-31-2009 | 07:14 AM
#28
Sponsoring Manufacturer
Superchips Representative
Superchips Representative
Joined: Apr 2009
Posts: 119
Likes: 0
From: Atlanta
Guys, thanks for your posts. My name is Jim and I work with Superchips on the event/sponsorship side of things out of Atlanta. I have been out of town and away from the computer but received a PM from a member directing me to this thread last night - Thanks again Mike!
What I'm going to do is touch base with engineering on the 4th - that is when these guys return to the office. In order to make a product that meets your expectations and needs, this kind of feedback needs to get to these guys and I will make sure it does. I will also touch base with Scott who is also active on this site to address some of your specific questions and concerns.
My goal is to keep you informed and relay the info and issues that have been posted. I"ll keep you all updated and hope to have Scott on this thread ASAP. Thanks again and I'll be in touch.
Jim McGinn
RMI/ Atlanta
770.399.9668 x 103
jim@rmiatlanta.com
What I'm going to do is touch base with engineering on the 4th - that is when these guys return to the office. In order to make a product that meets your expectations and needs, this kind of feedback needs to get to these guys and I will make sure it does. I will also touch base with Scott who is also active on this site to address some of your specific questions and concerns.
My goal is to keep you informed and relay the info and issues that have been posted. I"ll keep you all updated and hope to have Scott on this thread ASAP. Thanks again and I'll be in touch.
Jim McGinn
RMI/ Atlanta
770.399.9668 x 103
jim@rmiatlanta.com
01-04-2010 | 07:44 AM
#29
Sponsoring Manufacturer
Superchips Representative
Superchips Representative
Joined: Nov 2008
Posts: 244
Likes: 0
From: Florida
Hey guy's, sorry for not getting to this thread earlier. We just got back from the holiday break.
We are aware of this issue and currently have a few beta testers trying out some new options to resolve this issue for you.
Not sure if the forum will allow me to link other forum info but here is a link to the Superchips forum where our betas have updated everyone involved with their thoughts on the new features.
https://www.superchips.com/forum/vie...9228c&start=15
Once we have everything buttoned up and can release the options to the public I will be sure to let everyone here know so you can try them out for yourselves.
Scott
We are aware of this issue and currently have a few beta testers trying out some new options to resolve this issue for you.
Not sure if the forum will allow me to link other forum info but here is a link to the Superchips forum where our betas have updated everyone involved with their thoughts on the new features.
https://www.superchips.com/forum/vie...9228c&start=15
Once we have everything buttoned up and can release the options to the public I will be sure to let everyone here know so you can try them out for yourselves.
Scott
11-26-2011 | 08:45 PM
#30
JK Newbie
Joined: Feb 2011
Posts: 5
Likes: 0
From: chatsworth georgia
I can completely second this problem. Just flashed to the 91 octane tune yesterday from stock and first time in a parking lot noticed this issue, came home to search and found this thread.
I can understand people having a hard time relating unless they experience it. It's honestly probably even too subtle to take video of but it IS there, IS annoying and was NOT there before the tune.
I don't feel like the problem HAS to be there to fix the throttle lag issue either, in a way it feel like an exaggerated lag. No matter how slowly you press the throttle it feels like it goes from 0% throttle to about 10-15% throttle at the snap of your fingers. The best description is like JonP said, there is a 1/2 inch of "dead zone" at the top of the pedal where nothing happens then BOOM power on and jump forward, then when you let off the throttle a bit, not completely, it's as if you took the pedal from 10-15% to lifting completely, power dies and you lunge forward. Rinse and repeat the whole time through the parking lot, crawling or any other slow speed finesse situation.
Something I haven't tried yet is the "crawl" tune. It states better low speed throttle response. I just don't want to loose the power that the 91 tune gave. It really is a big difference over stock. I love everything else about the tuner, except this glaring bug... I'll post back after I try the crawl tune.
I'd like to hear from anyone else that has the superchips that either has or has not experienced this issue after tuning.
I can understand people having a hard time relating unless they experience it. It's honestly probably even too subtle to take video of but it IS there, IS annoying and was NOT there before the tune.
I don't feel like the problem HAS to be there to fix the throttle lag issue either, in a way it feel like an exaggerated lag. No matter how slowly you press the throttle it feels like it goes from 0% throttle to about 10-15% throttle at the snap of your fingers. The best description is like JonP said, there is a 1/2 inch of "dead zone" at the top of the pedal where nothing happens then BOOM power on and jump forward, then when you let off the throttle a bit, not completely, it's as if you took the pedal from 10-15% to lifting completely, power dies and you lunge forward. Rinse and repeat the whole time through the parking lot, crawling or any other slow speed finesse situation.
Something I haven't tried yet is the "crawl" tune. It states better low speed throttle response. I just don't want to loose the power that the 91 tune gave. It really is a big difference over stock. I love everything else about the tuner, except this glaring bug... I'll post back after I try the crawl tune.
I'd like to hear from anyone else that has the superchips that either has or has not experienced this issue after tuning.