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  #11  
Old 07-08-2011, 03:57 PM
Stangshcky12 Stangshcky12 is offline
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I've seen similar intakes that used PVC pipe or even some that route ducting from the fog light holes
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  #12  
Old 07-22-2011, 11:34 AM
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My first thoughts would have been the exhaust issues these rigs are having. Supposedly running down the highway for a while or towing a load cleans the DPF out. I'd love to see someone try that and see if it made a difference.
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  #13  
Old 07-22-2011, 01:25 PM
Stangshcky12 Stangshcky12 is offline
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Quote:
Originally Posted by rsg1963 View Post
My first thoughts would have been the exhaust issues these rigs are having. Supposedly running down the highway for a while or towing a load cleans the DPF out. I'd love to see someone try that and see if it made a difference.
It does clean the DPF filter and will help a little bit but you still have the restrictions of the DPF filter and NoX filter. What you said is passive regeneration. Exhuast temperatures are high enough (around 600*F) the filter will burn itself out. If the filter is close to full and temperatures arent high enough the Cummins DPF use raw diesel fuel as a catalyst to burn out the particulate.
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  #14  
Old 11-24-2011, 04:45 PM
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Has this been resolved?

Are you launching from 1st? I think the first gear is a super low gear more for launching up a hill with a trailer. I always launch from 2nd with no problem.
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  #15  
Old 05-15-2012, 01:49 PM
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I'm kind of curious if it's just manual trucks that are having this problem? Or are some of the auto trucks effected as well? I ask because my '11 with the auto seems to be great.. Not anywhere close to my chipped/exhaust modded '10 hemi but.. Lots more rig to get moving there as well...
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  #16  
Old 06-09-2013, 10:57 PM
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I had this problem too, but after driving the truck for some time its just about keeping it in the powerband. usually making a pass I keep my RPM's at 2k or over. starts at 1500 for a really good launch or just 1200 for a decent start.
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  #17  
Old 06-07-2014, 11:50 AM
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Quote:
Originally Posted by GRam View Post
I'm kind of curious if it's just manual trucks that are having this problem? Or are some of the auto trucks effected as well? I ask because my '11 with the auto seems to be great.. Not anywhere close to my chipped/exhaust modded '10 hemi but.. Lots more rig to get moving there as well...
To GRam, My 2013 3500 Cummings w-Aisin AS69RC Auto w/4:10 axle 1800 miles has the exact same acceleration issues as stated by ehillman and others. I have been to the Ram Dealer twice, they said they re-programed the transmission and did a "quick learn". I do not know what a quick learn is. Both times the truck did improve a small amount, it is maybe about 20-25% better but still not correct, my totally stock 1995 Ford Turbo Diesel accelerates better. The dealer said they are looking into it, so far no response, I do not know if I will be hearing from them. Any and all responses to this would be appreciated. I want to keep the warranty intact but I am open to any suggestions. Like ehillman stated, sometimes it is just plain scary pulling out into traffic, with 385hp and 850 ft lbs, there should not be any acceleration issues. Thanks in advance.

Last edited by Sierra-Dan; 06-07-2014 at 08:41 PM.
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  #18  
Old 06-27-2014, 06:38 PM
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I have noticed the same with my new 2014. Seems to be how it is programmed. It is really bad if I start to get into the throttle, then back off for a bit. Doesn't matter how much throttle I give it right after that, it just sits there and does nothing for a few seconds. Dangerous if you are making a left hand turn in traffic and expect pushing the throttle to actually make the truck move!

I have experienced similar behaviour with my newer GM gas truck. You can mash the throttle to pass or merge and there is no downshift for a few seconds, as if the ECM/TCM are giving you a chance to change your mind...like "are you sure you want to mash it and burn a lot of fuel?" Haven't had a chance to look into the tune on this one to see if there are delays that can be removed.
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  #19  
Old 07-20-2014, 06:42 PM
Sierra-Dan Sierra-Dan is offline
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Default Acceleration Lag Update

Updated Info on Ram Acceleration Lag from post #17 on 6-7-2014. I went back to our local Ram dealer for the third time, the Service manager stated I was the only one he knew who was complaining about this. I told him to just search on the Internet and read all the comments about this acceleration lag, he stated he doesn’t go on the Internet. Interesting, so maybe like GM with their ignition switch problem, if you deny there is a problem, there is no problem. I have read about 16 hrs plus worth of blogs and comments on various websites concerning Ram’s acceleration lag. There is a multitude of good and thoughtful suggestions. This is what I did.

Number 1: I purchased and installed a BD Diesel Performance Throttle Sensitivity Booster. http://www.dieselperformance.com/pro...s_Booster3.pdf Their website and phone numbers are listed on the link. Look around for the best price, I purchased mine from “xtremediesel”. Easy install, it took about 20 minutes. There are three settings, stock, 50% increase, 100% increase. Follow the instructions exactly. BD states it will not leave a “footprint” on the computer. I tried the 50% setting first, definitely an improvement, then I went to 100% setting, almost perfect, it is like the truck should have come from the factory.

Number 2: I then read about turning the trucks “Hill Start Assist” programing OFF would help. It is my understanding this is defaulted ON from the factory, which it was on my truck. To turn OFF on my 2013 Ram Uconnect 5.0: Press the middle “Settings” button on right side of screen, then press “Safety/Assistance” on the screen, then press “Hill Start Assist” on screen, then press OFF on the screen. You can turn it back on later if you need it or like it better. What I noticed is the acceleration lag was now totally gone, it was so much better I turned the BD booster back to 50%.

Hopefully this may help others, if anyone finds out different or finds other solutions or different results please let us all know. All I can state is this is what worked for me, for now. The big plus, no more slow “OMG” moments trying to accelerate. BTW, I do not work or have any affiliation with BD or any performance company, I am a welder-fabricator.
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  #20  
Old 07-20-2014, 10:51 PM
DrX DrX is offline
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This is definitely not a simple pedal position vs throttle response issue.(I have built eleçtronics to work around similar situations). Otherwise it would behave the same way every time the pedal was applied.

I have read other posts online describing the same issue I have experienced.....start to apply the throttle, release it, reapply....no response. I would like to know if this is just an issue with DEF trucks.....could be in the emissions programming.
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