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A4 rolling acceleration question

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Old May 27, 2008 | 07:45 AM
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Default A4 rolling acceleration question

Why is it sometimes when I "floor it" it takes off like a raped ape and others it just kinda accelerates? Happens at all speeds.
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Old May 27, 2008 | 11:06 AM
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tune maybe?
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Old May 27, 2008 | 11:24 AM
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The downshift is controlled by a few things. The speed and RPM and the newly selected throttle position. I had all of my upshift points raised in the RPM range and the downshifts points lowered on the RPM range. Now, even "medium" increases on the loud pedal will cause a downshift and she (the car ) starts screaming.
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Old May 27, 2008 | 11:37 AM
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Originally Posted by Bluefire
The downshift is controlled by a few things. The speed and RPM and the newly selected throttle position. I had all of my upshift points raised in the RPM range and the downshifts points lowered on the RPM range. Now, even "medium" increases on the loud pedal will cause a downshift and she (the car ) starts screaming.
how do you do this? any downside?
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Old May 27, 2008 | 01:51 PM
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Originally Posted by Berger6696
how do you do this? any downside?
Need to have a Tuning shop set it up for you, or get a hand held device that will allow you to do this. I have it done on my A4 as well, works just fine, even in the twisties I keep up well with Mn6's...
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Old May 27, 2008 | 02:01 PM
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How did you figure out what to change the shifts to? How bad does this hurt the mpg's?
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Old May 27, 2008 | 02:17 PM
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Changing shift points wont hurt MPG, unless you USE it to the Max all the time. Meaning, unless you wana floor it all the time, or want fast pick ups most of the time. Other than that, the car will drive normally.

How to figure out the shift points? Well there are many guys on the forum who can send you their shift points info, you can just copy that. I have one too, but my laptop is down these days Put up a question on the forum about shift points and you'll get tons of replies. Or just go to the search for "shift points".
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Old May 27, 2008 | 02:30 PM
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Yep, tuning shift points will help. I needed more so I added 3:73's and a 3600 stall...no more dead spots or anything.
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Old May 27, 2008 | 02:46 PM
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I guess part of the time the A4 is downshifting all the way to first... and other times it only drops down to second.

I think you need to be below 35mph to get a downshift to first
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