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Bilstein PSS9 (B5 S4) dyno results, and suspension ramblings.

Old 09-04-2006, 08:13 PM
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Default each colored line represents a different shock setting. the grouping of lines & the

separate line show that the shock is working almost exactly the same for all but one setting.

the single line with a very different path is the "other" setting of the 9 options. the remaining 8 are following the same trend-line. actually one line may be deviating, but it's pretty much going to feel the same.
Old 09-05-2006, 03:58 AM
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WTF? Autozone sells PSS9s? What has the world come to? :-P
Old 09-05-2006, 08:14 AM
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special order only
Old 09-05-2006, 09:20 AM
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so will stiffer springs be better suited to the PSS9 in your opion? :-)
Old 09-05-2006, 09:29 AM
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Default Re: so will stiffer springs be better suited to the PSS9 in your opion? :-)

I think PSS9s have enough rebound to accept a stiffer spring, you could add about 100 lbs without issues. If you crank up to stiff, you could add 200 lbs or more. The problem is that stiffer springs require softer compression settings. Bilsteins add compression at the stiff setting. I do not understand that at all...
Old 09-05-2006, 09:36 AM
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any way to change the compression settings? and Anyway to purchase a good set of stiffer springs?
Old 09-05-2006, 10:55 AM
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Default Yes, start with Penskes.

I am not kidding. Bilstein springs are custom to this app, and shocks are not user rebuildable.
Old 09-05-2006, 12:28 PM
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Default Absolutely. Steve at Bilstein is happy to revalve the PSS9 kits. More than one customer...

actually keeps one set at BS USA and one set on the car and communicates track results over the phone with Steve as he sets up their valving and ships out the set to them. He has been helpful to me in the respect before. There is a cost for the revalve though. As for spring rates. Bilstein reports the setup is good for 650lb springs with no need for a revalve at all, perhaps more but they are not willing to commit.

cheers! Mike
Old 09-05-2006, 01:20 PM
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Default yeah better safe than sorry

Tein says +/- 110 lbs on their shocks from what the original spring rates were.
Old 09-05-2006, 02:19 PM
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Default totally agree. I dont mind companies keeping me conservative..

rather than try and push me to do something more daring. I'll do that all by myself

cheers! Mike

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