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 ...
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.
First mod ; Boost and AFR gauges
-2 1/2" custom charge pipes
-Custom (1 off) GTX2060 turbo
-Custom 3" CAI
My 40mpg summer DD http://www.youtube.com/watch?v=wambNdfnu5M
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.
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...
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.
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. (?)