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Old Dec 4, 2004 | 11:09 PM
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powercrazed
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From: 94wrx 341bhp/328lbtorque 6 speed box
Question bump steer mod

keep reading this is a good mod to do but what is it and what does it do?

nathan
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Old Dec 5, 2004 | 05:14 AM
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From: South Bucks
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It consists of shims under(!?) the steering rack mounts. This reduces any understeer as the front of the car rolls under cornering. Usually it's accompanied by a full laser alignment and suspension goemetry check/setup.

J.
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Old Dec 5, 2004 | 12:49 PM
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From: S E London........ 555 Wagon Sqn
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Originally Posted by vindaloo
It consists of shims under(!?) the steering rack mounts. This reduces any understeer as the front of the car rolls under cornering. Usually it's accompanied by a full laser alignment and suspension goemetry check/setup.

J.
Who can do this mod
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Old Dec 5, 2004 | 01:18 PM
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From: Api 500+bhp MD321T @91dB Probably SN's longest owner of an Impreza Turbo
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The only company who can do this properly is http://www.powerstation.org.uk/
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Old Dec 6, 2004 | 09:48 PM
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From: Zed Ess Won Hay Tee
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i did it myself and so did plenty of others
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Old Dec 6, 2004 | 10:20 PM
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From: 94wrx 341bhp/328lbtorque 6 speed box
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how is this done? what is involved?

nathan
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Old Dec 6, 2004 | 10:29 PM
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From: Zed Ess Won Hay Tee
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1st of all. bumpsteer can not really be removed, its simply reduced quite a bit
the basic idea is to adjust where the steering rack sits

when your cars wheels move up and down the steering rack doesnt move, this means that it iether toes in or toes out, as the wheel moves up and down the wheel arch

you can reset your steering rack to a height where this is far less noticible.

if you fit a set of tracking guages to your car, and loosen of your steering rack, when you raise or lower the rack manually, you should see the tracking guages move about

if you work on this principle you should have a pretty good idea, how to find a good sweet spot. i cant rember how much mine was lowerd by now

i wouldnt say that it got rid of understeer tho, it can help as part of a handleing pack of mods, but these things all need thought and planning

my car oversteers like hell on its winter wheels, on the summer ones its more neutral to understeer`ish, you need to wiegh up your own car and its mods
bumpsteer is dialed in to the standerd cars, for reasons of saftey (im led to belive)
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