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Australian Falcons Discuss the australian born and bred models here. Includes the 80's 90's and present day Falcons offered by Ford Oz.

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Old 10-21-2003, 18:14   #1 (permalink)
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Question EFI responsiveness

I dont know if this has been asked before but i am interested in knowing what you people think of the responsiveness of EFI on the falcons. Both my parents own falcons, An AU on duel fuel and a BA falcon and i have noticed that neither are as responsive as my XF falcon. For example, if you "tap" the accelerator with the engine running they both rev up after you take your foot off?
On my XF, which is carbie, it revs up instantly. I have also noticed that they dont respond as quickly in normal driving.

Anyway, back to the point. what are you guys opinions on this topic.

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Old 10-21-2003, 21:18   #2 (permalink)
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Re: EFI responsiveness

YellowXF I know the feeling.

I have a 3 speed EFi XF and my parents drive an AU Fairlane. With the XF i put my foot down and it kicks back instantly but with the AU, you put your foot through the firewall then it pauses for about .9 of a sec, kicks down and powers all the way out.

I think this could be due to the different gearboxes, accelerator cables, (fly by wire? don't exactly know what that is), VCT on the AU or maybe just new tech associated with ABS/traction control.

I have noticed too that if you rev the AU up at idle, it slowly decelerates back down and it can be harsh sounding. VCT perhaps?

Maybe someone else could shed some light
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Old 10-21-2003, 21:24   #3 (permalink)
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Re: EFI responsiveness

I imagine its in the gearbox.
XF are only a 3 speed and mechanical so they kick down faster.
The AU and other 4 speed electronic autos take forever to kickdown.
Dad's 3 spd EA kickdown is much faster than mum's 4 spd EA.
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Old 10-21-2003, 22:07   #4 (permalink)
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Re: EFI responsiveness

I thought the new cars reacted to the driver, so guessing your parents dribble along mostly, like most parents do, the car wouldnt know how to react, but if it was driven for a week coping a boot full, i am sure it would respond completely differently.

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Old 10-21-2003, 23:41   #5 (permalink)
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Re: EFI responsiveness

I find our Futura I6 very responsive to throttle touches and just lightly resting your foot on the accelerator causes an instant rev increase. Most responsive I've ever experienced. With the gear lever knocked over to performance mode it kicks down very quickly, on light throttle you can feel the torque converter locking in/out with very small inputs and it wants to kick down as low a gear as possible when given the chance.
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Old 10-21-2003, 23:53   #6 (permalink)
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Re: EFI responsiveness

Quote:
Originally Posted by Dellboy999
I thought the new cars reacted to the driver, so guessing your parents dribble along mostly, like most parents do, the car wouldnt know how to react, but if it was driven for a week coping a boot full, i am sure it would respond completely differently.

Dellboy999
I'm not sure the exact time frame, someone will confirm but if you were to run a quick series of hard acceleration runs in series it would alter the auto's shift pattern immediately after this so it would not take long to change the responsiveness.
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Old 10-26-2003, 20:21   #7 (permalink)
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Re: EFI responsiveness

Having handed my XF to my wife and moving on to an EFI of another brand (89 model) I find it hard to think of the XF as being responsive. All XF's I have driven/owned fall into the category of sluggish. Reliable, Yes, but still sluggish. The gearbox on my current car is still Mechanical so that's probably no comparison but it certainly makes the XF feel like a sluggish boat. Even if an XF does kick down quicker than an electronic box the XF motor and gearing (I'm talking stock) mean there's not much hope of responsive behaviour. Once they hit 120 or so on the freeway they seem to be quite responsive as they are pretty much designed for cruising.
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Old 10-26-2003, 22:38   #8 (permalink)
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Re: EFI responsiveness

Quote:
Originally Posted by Curls
I'm not sure the exact time frame, someone will confirm but if you were to run a quick series of hard acceleration runs in series it would alter the auto's shift pattern immediately after this so it would not take long to change the responsiveness.
Should be able to disconnect the battery for an hour or so and then when you reconnect the ECU will be in learn mode so it should change its shift if you thrash it around a bit after that.
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