Electronic Throttle Response
3rd Gear Member
Joined: Mar 2007
Posts: 573
RE: Electronic Throttle Response
8178, it's funny you mention the close ratio transmission, because I've been looking into putting a 6-speed into my GT. (the thread is in the V8 specific section.) But I want to get the throttle response optimized first!
Sleeper2
Sleeper2
3rd Gear Member
Joined: May 2007
Posts: 724
From:
RE: Electronic Throttle Response
ORIGINAL: sleeper2
8178, it's funny you mention the close ratio transmission, because I've been looking into putting a 6-speed into my GT. (the thread is in the V8 specific section.) But I want to get the throttle response optimized first!
Sleeper2
8178, it's funny you mention the close ratio transmission, because I've been looking into putting a 6-speed into my GT. (the thread is in the V8 specific section.) But I want to get the throttle response optimized first!
Sleeper2
Joined: Jun 2007
Posts: 6
RE: Electronic Throttle Response
Ok...so what if you could care less about passing an emissions test? Will dramatically altering dashpot settings negatively alter driveability? In other words, yeah, it can be made to drop rpms correctly, but then you get unstable idling, intermittent stalls, etc. Or, does the thing see too fast a rate of change, or too big a spike in O2 and throw itself into limp mode or otherwise set off the alarms?
3rd Gear Member
Joined: Sep 2006
Posts: 784
From: California
RE: Electronic Throttle Response
all this techno speak is way above my knowledge, however, if one was to modify an older style throttle cable, feed it through the firewall, disconnect the little servo motor from the TB, and connect the cable... would that work? or would the CPU not understand why the TB was opening and closing without themotor doing itand screw something up tryingto compensate? I understand that cruise control wouldn't work... or maybe that could be addressed later... Anyways would something like that work?
3rd Gear Member
Joined: Apr 2006
Posts: 632
From: Charlotte NC
RE: Electronic Throttle Response
ORIGINAL: marcuskeeler
My pre-Whipple SCT tune was very crisp and eager although the dashpot 'return to idle' time was still appalling. However, you won't get the lazy dashpot issue to go away unless you radically alter it's settings in the tune, and then you'll getproblems with passing emission tests.
Ford should have used a faster, more powerful, OBC which samples quicker and which would be capable of shutting fuel flow down in a more timely fashion at throttle closeinstead of relying on the delayed dashpot settings to burn excess fuel away [:@]
My pre-Whipple SCT tune was very crisp and eager although the dashpot 'return to idle' time was still appalling. However, you won't get the lazy dashpot issue to go away unless you radically alter it's settings in the tune, and then you'll getproblems with passing emission tests.
Ford should have used a faster, more powerful, OBC which samples quicker and which would be capable of shutting fuel flow down in a more timely fashion at throttle closeinstead of relying on the delayed dashpot settings to burn excess fuel away [:@]
BTW, the twin screw takes care of throttle lag pretty well--but the tradeoff is spinning tires.
Joined: Jun 2007
Posts: 6
RE: Electronic Throttle Response
I dont think the problem is the fact that the throttle blades are controlled by a servo, rather in how its programmed.
As to where we've been...well, I've been driving Chevys, which dont seem to have these problems! My bone stock suburban has much better response than the 4.6 3v
Reading all the threads on the earlier motors and the solutions around it for them has been entertaining though. I would guess sooner or later someone will come up with a way around it for the 3v motors...dont know if I have the patience though!
As to where we've been...well, I've been driving Chevys, which dont seem to have these problems! My bone stock suburban has much better response than the 4.6 3v
Reading all the threads on the earlier motors and the solutions around it for them has been entertaining though. I would guess sooner or later someone will come up with a way around it for the 3v motors...dont know if I have the patience though!
1st Gear Member
Joined: Jun 2007
Posts: 92
From:
RE: Electronic Throttle Response
Are you guys sure it isn't also due to the motor and tranny and not just the Computer? Mine improved but it is still there.....every overhead cam v-8 car that I have driven has been this way. Besides keeping the RPM's higher is better for drag racing....
4th Gear Member
Joined: May 2007
Posts: 1,249
From: Utah
RE: Electronic Throttle Response
My throttle lag on acceleration is GONE. This thread is talking about the rpms hanging
when letting off the gas and how it takes forever to go back to idle after a quick throttle blip.
when letting off the gas and how it takes forever to go back to idle after a quick throttle blip.
3rd Gear Member
Joined: Jul 2006
Posts: 685
From: Chicago (South Loop)
RE: Electronic Throttle Response
you all need to try the throttle reset trick. with the ignition on and caroff, slowly push the gas pedal to the floor over 5 seconds, then over the next 5 seconds slowly release it until your foot is off of the accelerator. now start the car....night and day difference!!!
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