SMOGCONTROL

Hello everyone. I'm new to this forum but have been lurking for about a week. I bought my 2009 GT for fathers day
Last week I read a thread about depressing the gas peddle with the koeo to set the throttle response. Ive searched for the thread but can't seem to find it. Anyone care to chime in??

157dB

Turn on key. Do not start Mustang.
Let all dash lights extinguish.
One or two will stay on.
SLOWLY depress the gas pedal fully to the floor.
SLOWLY release gas pedal util it is fully un-depressed.
Turn off key.
Start vehicle and hold onto your pants...
Bleeding the clutch is as simple of a procedure.....

SMOGCONTROL

That's what I thought I read. So what is this suppose to do?
Thanks 157DB!!!

157dB

It tells the PCM where no pedal depression is in ohms and
what fully to the floor depressed ohms is.
Your gas pedal is a big ol variable resistor assembly.
The manufacturing process keeps the resistances
within a tolerance lets say of abot 10%. The PCM needs
to know what undpressed and fully depressed resistances
are for that particular pedal.
It not a magic wand, rips the seat of your pants off difference,
but it is a trick that works to get the Throttle Body open sooner
when the pedal is depressed.

montereymatt

So is this only something good to do on a brand new car? My GT is at about 3500 miles now.

antonio1988

well do this^^^ or get a handheld tuner and a Race tune from Brenspeed or Bama

Norm Peterson

You might have to do it after any time that the battery is disconnected or a different tune is loaded. Worst case, you spend a moment making sure that the PCM understands where zero throttle and WOT are.


Norm

clentonz

157db is right on about the throttle position reset.

About the clutch bleeding procedure, do you think you could post that up please?
And what would be the 'benefits' of doing this on a stock stang? Thanks 157db

157dB

There is a bleed screw according to one forum member.
But the easy way to top off a slightly spongy clutch is to,
get this, park with the front end higher than the rear end. We are talkin
45 degree or better angle. Shut off engine. Set parking brake.
SLOWLY depress the clutch pedal all the way to the floor. HOLD it there
for a count of 3 and then SLOWLY release it to the fully released position.
Do this 3-4 times (the slower and more times the better) and its good to go.
The PCM knows where 0% throttle pedal and when you touch it and
make it see +0.1% pedal, the engine responds. If the PCM sees an undepressed
pedal as a negative percentage, (AS IN UNCALIBRATED) the pedal must
be depressed thru the negative range into the positive range before the engine will respond. Its called throttle lag and the S197 already has some
of the programmed into its boolean algebra in the spanish oak processor.

Lifter583

I installed a spacer at the throttle arm pivot point stop, took away all the dead movement. Now I breathe on the pedal and the RPMS jump 200 instantly. This make for less travel to WOT when shifting, VERY NICE!