Delayed throttle response?

[Mark_888]

I find the delay is more related to the "drive by wire" gas pedal. I also find my leg gets tired as it always pushes against the pedal resistance as you wait for the engine to respond (with normal pedal modulation to maintain a steady speed). I had the same problem with a new Buick several years ago, but even worse. I just wish pushing the pedal to the engine accelerating was more linear.

I suspect that they do that to increase MPG on the EPA testing.

 

[RickA1]

Thanks for all the input. I was going to look into the flap/magnets but accessing the air filter requires a bit of work and I wasn't prepared for that. Will look for some time to do that.

I can say that I've tried to "train" the transmission and I do feel it's a bit more responsive now. Of course it can be my imagination.

Oh and this is not about power, available torque or any other mechanical parameter. It' plain and simple "throttle response".

 

[draileyy]

I just purchased a 5.0 Genesis and had been reading about the throttle response and "dead pedal issues" on this forum. Had to take it in for a steering issue where as they unhooked the battery to replace the rack and pinion which seemed to reset everything including the transmission info the car had already learned. I replaced the air filter with a K & N air filter, removed the magnet from the flapper door so there's no resistance and installed the Sprint Booster previously mentioned in this thread. The Sprint Booster is taking all response time out of the car responding. Not only that, but depending on what setting you have the speed booster on (full throttle on mine), and what speed you're currently going, it seems to drop the transmission immediately into not the lowest gear, but the one right above it as soon as you get the pedal about 1/4 of the way down. The response time is so immediate, you need to really dial back on how hard you press the gas pedal. If you want a quick fix, I'm far from mechanically inclined but installed everything within 15 minutes.

 

[srtcrazy05]

I've only test driven a 3.8. The response seemed to be like any typical automatic car I have driven. I dropped it down a few gears with the paddles and when I mashed the pedal it actually downshifted one more time before taking off. The downshift/delay didn't seem too bad from what I can remember. I did notice that shifting with the paddles was somewhat laggy compared to the dual clutch transmissions like an Evo or GTI but that was expected. All of this was in normal mode too.

 

[asleep@thewheel]

Wow.

I'm so sorry you guys have only experienced "modern" cars...with computers in control.

Back in the day...60's, 70's...if you stomped on the pedal and it didn't immediately launch, it was broke. And was probably easy to fix, and damn sure didn't require another computer to fix it.

Don't get me wrong, my other car, 2016 Z06 Vette, is TOTALLY computer controlled...but I don't have to like that fact.

 

[pmckechnie]

I have been reading this thread about the air door and magnets, so yesterday I removed the air filter, removed the magnet from the door and reinstalled it so the door is always open. I didn't think I had a delay before the mod, but I must have. The off-idle response is much better now. Nothing to right home about, but some what better. I now have a problem. If accelerating from a stop and use more than1/2 throttle, the rear tires come unglued from the pavement. I can live with it.

 

[spec5noodle]

I had done this a while ago, and was very happy with the results, especially for a rolling stop where you are merging quickly out into heavy traffic. After a recent unfortunate encounter with a deer, turns out they replaced the air box. And I could tell it immediately, as the dreaded delay was back. So I pulled the flap off to look at it (very simple, one screw. It's more effort getting the top of the air-box lid out of the way!), and tried reversing one of the clamping magnets, as somebody here suggested. The result was that the flag never closed, floating about 1/4" open all the time, which wasn't exactly what I wanted. So then I just left one of the magnets out. Now the flap closes, but just from it's own weight, and as soon as there is any air draw, it opens up. And the prompt throttle response is back!

 

[spec5noodle]

I had done this a while ago, and was very happy with the results, especially for a rolling stop where you are merging quickly out into heavy traffic. After a recent unfortunate encounter with a deer, turns out they replaced the air box. And I could tell it immediately, as the dreaded delay was back. So I pulled the flap off to look at it (very simple, one screw. It's more effort getting the top of the air-box lid out of the way!), and tried reversing one of the clamping magnets, as somebody here suggested. The result was that the flag never closed, floating about 1/4" open all the time, which wasn't exactly what I wanted. So then I just left one of the magnets out. Now the flap closes, but just from it's own weight, and as soon as there is any air draw, it opens up. And the prompt throttle response is back!

I had done this a while ago, and was very happy with the results, especially for a rolling stop where you are merging quickly out into heavy traffic. After a recent unfortunate encounter with a deer, turns out they replaced the air box. And I could tell it immediately, as the dreaded delay was back. So I pulled the flap off to look at it (very simple, one screw. It's more effort getting the top of the air-box lid out of the way!), and tried reversing one of the clamping magnets, as somebody here suggested. The result was that the flag never closed, floating about 1/4" open all the time, which wasn't exactly what I wanted. So then I just left one of the magnets out. Now the flap closes, but just from it's own weight, and as soon as there is any air draw, it opens up. And the prompt throttle response is back!

So amartz, I couldnt imagine of how did you left one of the magnet out. Did you use any of the tape or anti slide pad? if possible, please provide the pictures. Thanks,