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How can I fix under steer?

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Old Oct 31, 2014 | 03:00 PM
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How can I fix under steer?

Obviously I can just drive slower

So far I've put in coil overs and poly bushed the front.
What else can I do?
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Old Oct 31, 2014 | 03:08 PM
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Rear seat bar
Front splitter
Restack rear diff/ send to tre for 12 plate mod
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Old Oct 31, 2014 | 03:14 PM
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Have you tried adjust camber? Like -2 for the front and -1.5 for the rear? Ar least it's cheapest you can trie.
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Old Oct 31, 2014 | 05:34 PM
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https://www.evolutionm.net/forums/ve...cd-tuning.html
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Old Oct 31, 2014 | 06:05 PM
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Tires/camber/bars.....I would also really look into the mechanical diffs.
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Old Nov 1, 2014 | 04:16 PM
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Originally Posted by Waffled
Obviously I can just drive slower

So far I've put in coil overs and poly bushed the front.
What else can I do?
make the rear stiffer
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Old Nov 1, 2014 | 05:44 PM
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Old Nov 1, 2014 | 06:43 PM
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as stated. stiffer rear bar is the deal.
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Old Nov 2, 2014 | 11:52 AM
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have you had 4 wheel alignment done recently ????
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Old Nov 2, 2014 | 12:03 PM
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A good place to start is to get a stiffer reay sway bar, run a higher spring rate in the rear tha the front, run a little more rear tire pressure, and a re-stacked rear diff. The new ACD ecu flashes supposedly work pretty well if you have a 05 VIII or a IX.
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Old Nov 3, 2014 | 09:55 AM
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Originally Posted by golgo13


Great Chart!
raising front tire pressure and lowering rear to increase oversteer seems backwards to me..
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Old Nov 3, 2014 | 10:23 AM
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Originally Posted by luckybull
raising front tire pressure and lowering rear to increase oversteer seems backwards to me..
Me too, but I googled it.

http://www.tirerack.com/tires/tirete....jsp?techid=58
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Old Nov 3, 2014 | 10:46 AM
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It's funny bc I feel like I've seen that same charted posted prior and I had a similar comment and and just now as Im looking at it I thought the same exact thing...

For the most part that chart seems accurate but as reputable as a source that TR is I still disagree. From talking with other folks as well as my personal findings while racing my car throughout the past few years they have it backwards.
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Old Nov 3, 2014 | 12:05 PM
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It's a little misleading. Really there's a sweet spot for tire pressure and going higher or lower will result in less grip. In general, a little too low will reduce grip more than a little too high.

- Andrew
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Old Nov 3, 2014 | 01:16 PM
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Ahh that makes sense then.

However if you are trying to make small handling changes through tweaking the tire pressures and dropping the rears by like 2#'s yields more oversteer you are probably already way too low with the pressure in the first place.
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