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    throttle lag question

    This is a discussion on throttle lag question within the Dodge Dart 1.4L MultiAir Turbo forums, part of the Dodge Dart Garage - The Mopar Zone category; Originally Posted by ig2mdThwifsDart ?? No clue what you're talking about here. My wifes Dart is Bone stock and I have to choose my launch ...

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    1. #21
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      Quote Originally Posted by ig2mdThwifsDart View Post
      ?? No clue what you're talking about here. My wifes Dart is Bone stock and I have to choose my launch RPM carefully or I will spin the tires all the way through 1st gear. AFAIK it has never been flashed and is running original stock cal. Although it was a demo and we did get it with 2000kms on the clock. So who knows what they might have done at the dealership in that time.
      your wife drives a stick? if yes, and if her dart bone stock spins tires, then i guess i have yet another issue to discuss with my dealer. i have terrible throttle response on my 2013 1.4T.

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      Quote Originally Posted by cereal killer View Post
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    3. #23
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      Quote Originally Posted by pkgmsu2000 View Post
      your wife drives a stick? if yes, and if her dart bone stock spins tires, then i guess i have yet another issue to discuss with my dealer. i have terrible throttle response on my 2013 1.4T.
      Yep, stick. The reason most can't run into the 15's with the dart is because of traction issues. Either they will bog or too much tire spin. Finding the perfect combo of slight spin and traction takes time and skill.

      That's not to say I am unaware of the drive by wire lag, but with a manual trans and seasoned driver you can get past 90% of it by driving alone.

      IF I were to leave from a stop at idle, then floor it, I prob could count to 2 before any significant accel were to take place. I have found that part throttle in those conditions works Better than full throttle.

      Something I am Very interested in is when in too high of a gear (need to downshift) but you leave it and give some decent throttle. The turbo will climb to 10psi before "feeling" like it is starting to make any difference. I am Very interested to see if the compressor wheel I have chosen to run on the 300WHP capable turbo will resolve some of this. ie. even though it is a bigger turbo and you would expect more lag, it will actually come on with Better transient response from the matched compressor to 1.4l mtr.

      In other words; at 3-5psi in those high gear situations you will start to "feel" the turbo making a difference, instead of 10"psi on the stocker.
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      Quote Originally Posted by ig2mdThwifsDart View Post
      Finding the perfect combo of slight spin and traction takes time and skill.

      IF I were to leave from a stop at idle, then floor it, I prob could count to 2 before any significant accel were to take place. I have found that part throttle in those conditions works Better than full throttle.
      Pretty interesting stuff here. When my clutch pedal stops feeling like a bowl of mashed potatoes I'm gonna experiment.

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      It certainly reduced it, by at least 60-70%, I went in asking about 18-003-13 and 18-004-13 that I saw mentioned previously on the forum, so they did a comprehensive diagnostic and found the above mentioned code updates, which have REDUCED but not completely eliminated the lag.

      I also find turning off the traction control gives me a slightly faster tip-in.

      By the way anyone who can't "launch" a manual with a Turbo just doesn't know how to drive well enough. I've been racing for 38 years, I love this car for a daily driver that goes when I ask it to (technique and experience may be required for similar results) and gets 30+ mpg when I want.

      Now I'll put my RRM Tuner back on and turn it back up a notch.
      Last edited by Sather; 08-24-2015 at 09:01 PM.
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      The "normal" 2 second delay from a stop on my 1.4T DDCT is not a design feature, it is a FIAT engineering SNAFU. Otherwise, how come aftermarket vendors can lower this delay significantly? I have driven a lot of other newer cars recently and none had any throttle delay to write home about...




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      Quote Originally Posted by Pretty Boy Floyd View Post
      The "normal" 2 second delay from a stop on my 1.4T DDCT is not a design feature, it is a FIAT engineering SNAFU. Otherwise, how come aftermarket vendors can lower this delay significantly? I have driven a lot of other newer cars recently and none had any throttle delay to write home about...
      The slight lag (not 2 seconds on my car) and less-than-direct throttle response is an intentional design choice, so yes, it's "normal." The OEM tune on the Dart is big on forcing fuel-economy on the driver.

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      So not going anywhere is a fuel saving feature? Who knew? I imagine nothing is happening in any drivetrain component in my car during my 2 second delay from a stop, and where is this great city hwy MPG that it is supposed to bring me? In my normal city driving the Dart averages 18 mpg city, while my other turbo, 6-cylinder, and AWD vehicles get between 19-22 city (the first two are old and weigh 50-150 lbs less than my Dart and the AWD is 325 lbs heavier). This is driving all four vehicles at approx. the same rate of acceleration so I certainly wouldn't classify my Dart as a "high-mpg" vehicle. YMMV

      Only my modded turbo car doesn't equal my hwy mpg in the Dart either.




    10. #29
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      My son had to get a "commuter car" for his new job. So, he just wanted bare bones reliability and mileage. Bought a year old Yaris from Hertz direct to consumer sales. It's not a powerhouse, obviously, but we went to visit him and there were four of us in the car. I weigh over 250. The combined others about 450 more.
      In short, I don't even know what NA engine was in it, but, automatic. No lag. Considering the load - plenty peppy. (?)

     

     
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