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2,616 Posts
Throttle Response
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Holla!!!
shiiiiiit i bounce it off the rev limiter... 6500 here
At the end of the day these transmissions are programed to best the EPA cycle with little regard to how it drives in the real world. They error on the side of economy and not good driveability. I am not picking at you but lets get realistic instead of dropping more money to fix what should have already been fixed.
When you look on fuelly, the manual Fiestas get more mpg than the powershift even though its rated higher on paper. A manual will fix some of this problem but I have yet to ass a seat of a fly by wire car that would respond as well as manual linkage. Most people never notice the difference until they drive something that has manual linkage and those are getting scarce now a days. Those of us that grew up driving carbed cars even notice it more. As sorry as they were in many respects they came on the instant you hit the throttle properly tuned. No lag, no BS, no torque mgt ect.............
Thanks for the responses everyone. Just to clear the air, I'm not looking for a 10 second car. The biggest issue I have is when the on ramp is metered. The light turns green and its time to accelerate to freeway speeds, I dislike the lag between when I press the pedal and when the car finally accelerates. I understand the difference between fly by wire and fly by cable cars. I rebuilt motors in high school, I am familiar with the aspects of cars. I was simply wondering if anyone had done any specific upgrades and noticed a difference. Again, I appreciate all the information you guys have given me.
I don't dispute what you're saying but I am willing to bet that those PS units are driven as if they had a conventional slushbox tranny. I can tell you from personal experience that doing that in a PS will lower MPG by at least 2.
I didn't know any better when I got Phantom and drove it like a conventional automatic. After learning more about the PS (after the learning period!!) I realized what mistakes I had made and worked toward a reflash of the TCM to get back into learning mode again.
In the meantime I bought Cherri and treated the PS in her as I should have done in Phantom. Based on my record-keeping for fueling on both for approximately the same initial miles (from delivery), here is what I get:
Phantom:
Miles driven: 2012.9
Total fuel cost: $202.77
Total gallons: 67.0083
Total MPG: 30.04
Cherri
Miles driven: 1883.7
Total fuel cost: $194.70
Total gallons: 57.9596
Total MPG: 32.50
Cherri only has 1993 miles on her, so I used her to limit the data pull from Phantom. During these miles, both have been on road runs at extended highway speeds, city and rural driving. Both time periods cover snow and ice conditions, OEM and non-OEM tires and more than one driver using the vehicle.
There is, IMO, a marked difference once a Fiesta owner does not treat the PS like a conventional transmission. <shrug>
I didn't know any better when I got Phantom and drove it like a conventional automatic. After learning more about the PS (after the learning period!!) I realized what mistakes I had made and worked toward a reflash of the TCM to get back into learning mode again.
In the meantime I bought Cherri and treated the PS in her as I should have done in Phantom. Based on my record-keeping for fueling on both for approximately the same initial miles (from delivery), here is what I get:
Phantom:
Miles driven: 2012.9
Total fuel cost: $202.77
Total gallons: 67.0083
Total MPG: 30.04
Cherri
Miles driven: 1883.7
Total fuel cost: $194.70
Total gallons: 57.9596
Total MPG: 32.50
Cherri only has 1993 miles on her, so I used her to limit the data pull from Phantom. During these miles, both have been on road runs at extended highway speeds, city and rural driving. Both time periods cover snow and ice conditions, OEM and non-OEM tires and more than one driver using the vehicle.
There is, IMO, a marked difference once a Fiesta owner does not treat the PS like a conventional transmission. <shrug>
it's not sluggish at all IMO/E
It's just different. If you go and drive any other car with an electronic throttle it'll feel the same. In fact of the three I tried the fiesta was the fastest and most natural.
I'd say the delay (I know what you mean, it starts rolling in like second gear and when you punch the throttle there is a split second before it kicks down and launches) is the result of the powershift selecting a new gear, not the throttle. The transmission has a dumb computer, it can't snap into a lower gear straight away.
And these don't behave like older cars. My past was a regular auto with a cable from the pedal to the throttle. Revs were right there. Lots of wheelspin. These are quite different.
You just need to ge used to them
Go and drive a mini with a dual clutch in it, or a VW. Those have serious throttle lag.
just read the rest of your thread.
No worries man
Haven't ever considered mods to the throttle. I'm under warranty anyway!
But like I said, go seek out a mini or VW polo with a DSG/dual clutch. You press the pedal and there isn't even any revs for nearly a second or two.
Nothing. Then all the sudden it comes to life. Made test driving them horrible because I couldn't get the car into gaps in traffic properly. It was always a second or two behind me.
Dangerous even. Made the fiesta seem much faster.
No worries man
Haven't ever considered mods to the throttle. I'm under warranty anyway!
But like I said, go seek out a mini or VW polo with a DSG/dual clutch. You press the pedal and there isn't even any revs for nearly a second or two.
Nothing. Then all the sudden it comes to life. Made test driving them horrible because I couldn't get the car into gaps in traffic properly. It was always a second or two behind me.
Dangerous even. Made the fiesta seem much faster.
Joined
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2,616 Posts
agree 100% with going with partial throttle on take off. Gently roll into the throttle instead of just mashing it to the floor.mk 7, you have a 10 sec. car. 0-60 that is.
I find often that partil throttle on lift off works better than full throttle.
Once you ar moving, then mat it.
As Cobra said, they are a little different and take some learning or getting used to.
I have also heard from a lot of VW owners that the throttle lag is really bad, but I have not driven one to comment on it. I had a number of people drive my EU Fiesta, and they were all impressed with the throttle response with the fly-by-wire.
I'd let Vin 10 second my Fiesta... then we'd go play D&D.
Just a few basement mods needed...
So Telero, how's that dungeon coming along for you? You keeping your nose to the grindstone in an effort to keep Audrey's attention away from the evils of Diesel?then we'd go play D&D.
Telero = Most Awesome
In all honesty Vin isn't really that attractive to me. I read somewhere recently in a random headline that he plays D&D, so I thought it'd be amusing to bring up.
Telero doesn't have problems keeping my attention. (;So Telero, how's that dungeon coming along for you? You keeping your nose to the grindstone in an effort to keep Audrey's attention away from the evils of Diesel?
In all honesty Vin isn't really that attractive to me. I read somewhere recently in a random headline that he plays D&D, so I thought it'd be amusing to bring up.
Joined
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1,363 Posts
honestly, the ONLY point in throttle response that I am disappointed with in the Fiesta (my first drive-by-wire car) is when I let off the throttle.
In both my Focus and the wife's Jetta, if you wanted to blip the throttle - just a quick on/off the gas - the revs would just about mirror what your foot did; a quick up/down.
With the Fiesta, if you tap the gas to rev it the rpms shoot up.... and then slooooooowly descend back to idle. First time it happened in traffic I thought I had done something wrong in a shift. But the more I played with it, the more it seems like a built in safety of some sort on the computerized throttle response.
THAT I wish I could get rid of. It's not a big thing, I know, but it annoys me that the car doesn't react to my inputs in a timely manner. Waiting patiently on a tune
In both my Focus and the wife's Jetta, if you wanted to blip the throttle - just a quick on/off the gas - the revs would just about mirror what your foot did; a quick up/down.
With the Fiesta, if you tap the gas to rev it the rpms shoot up.... and then slooooooowly descend back to idle. First time it happened in traffic I thought I had done something wrong in a shift. But the more I played with it, the more it seems like a built in safety of some sort on the computerized throttle response.
THAT I wish I could get rid of. It's not a big thing, I know, but it annoys me that the car doesn't react to my inputs in a timely manner. Waiting patiently on a tune
I, like most here, have adapted to my Powershift transmission and the accelorator pedal. I have posted elsewhere that I felt the accelorator was a bit 'twitchy' and oversensitive. Once I've gotten used to it I have no problems whatsoever, including any lag uncommon to virtually any EPA compliant car today.
I do think Fiesta might survive more test drives with purchases if there were a little less learning.
Jon
I do think Fiesta might survive more test drives with purchases if there were a little less learning.
Jon
Right. Closing the throttle too quickly causes an overly rich mixture in the cylinders, so more air has to be let in to let that fuel burn properly.
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90 Posts
Amazing how few people that roll-on / roll-off. No wonder 1/2 shafts / CV joints get knackered...
Euro
Sadly,Not with the lack of torque in our little 1.6....
Amazing how few people that roll-on / roll-off. No wonder 1/2 shafts / CV joints get knackered...
Euro
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