Just started getting a few miles on the mustang and I have noticed that the throttle response (I'm sure due to the drive by wire system) is less than snappy at times. I was wondering if theres any cure for some of the sloppy throttle response like any of the tuner programs out there? One of the more annoying things I've noticed on this is the fact that the car takes so long to put a load on the engine after I let off the throttle. I'm guessing they did this so it makes upshifts smoother but... I like to keep the car in 3rd when I'm just cruising around town and it just feels very odd when I let off the pedal at 3000rpm and it just coasts like an automatic... when I'm surely driving a manual I noticed that a good 5 seconds or so after I let up on the throttle, the car will then begin to slow down and give some resistance from the engine winding down... this is totally tolerable, just feels very odd in comparison to any other manual transmission car I have owned.

 

YES! I have noticed the same thing, and its kind of annoying...

Very interested to see if anyone's got any ideas about this!

-HypromanGT

 

There are multiple posts about this subject, it is very common. From what I've read from others, some of it can be tuned out with the Predator or SCT tuners and the first level fix is a very simple procedure that you may have to repeat 2-3 times. From memeory, it is something like this:

1: Put the key in the ignition, don't start it but turn it to the "ON" position (not ACC).
2: Push the pedal to the floor gradually. Not slow and don't stomp it (about 2 seconds to floor).
3: As soon as you get to the floor, let off it.
4: Turn the key to the ignition off.
5: Start and drive the car.

This same type of procedure has been recommended for other cars with drive by wire too. I have an 06 GT Automatic and it was terrible before doing this. It still isn't great but a noticeable difference. -Joe

 

my v6 is just the same, it pees me off!. i want a cable throtle

 

My diablo tunes seemed to help a lot and when I had a custom dyno tune done it is not there anymore. it responds instantly. It did not eliminate the downshift situation with the rpm's staying up, but I like that when upshifting at a hard load.

 

I got a SCT Dyno Tune and it removed most of the Lag, I purchased a Billit 62mm Throttle Body and it got rid of the rest of the lag

the purpose of the "throttle delay" is to avoid clunk. Removing tip-in rate limiting will now cause you to have clunks on rapid pedal tip-in's. Tip-in rate limiting is not a "delay in response" but a limit in the rate at which the throttle is opened. Also, if your car is an automatic, the vast majority of your "throttle delay" complaints will actually be transmission induced as a result of hydraulic delays and shift scheduling. Removing tip-in rate limiting will not help those complaints, and they should be flagged as "transmission delays", not "throttle delays".

Finally, all spark-ignited engines with a finite intake manifold volume will have a delay between when the throttle plate moves and when the engine starts to increase torque output. This is because the intake manifold takes a certain amount of time to fill with the incoming air. The bigger the intake manifold, the bigger the delay.

 

swieduwi...

WELL PUT...

Thanks.

Yes.... loading tune will help the throttle delay a LOT.

Resetting the "stepper" doing the iginition thing will help too - however it doesn't last, causing you to redo it after a while.