Alex_997TT:
Can - if you recall the whole reason I decided to take the plunge into suspension upgrades was because I SEVERELY knocked out my geometry going very fast down a cobbled twisty mountain road in Switzerland on my honeymoon. The car was almost undrivable after that.
So I have no idea which of the 4 wheels were still to Parr specifications if any.
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MY2008 997 Turbo - Cargraphic stage II powerkit (544PS/798Nm) | HRE P40's | Bilstein Damptronics | GMC Sway/Toe-steer/Dog-bone kits
Yes I remember now. Wow how fast were you going? Tripple digit?
Just for the sake of discussion: By looking at the values and making some reasonable assumptions (rear wheels not affected as much, right front is the one that got knocked severely out of alignment), I still would think Parr settings are not so different from what other tuners do:
1. Rear negative camber same as stock Turbo, front negative camber same as GT3 "street alignment" value of -1.2. This we already do.
2. Front toe out about -2, rear toe in about +4. This is the part missing from your current setting.
Number 2 will make for a more responsive turn-in behavior, but may also make car wander on freeways and of course causes uneven tire wear. My Porsche shop has told me a couple times it makes the car a lot more fun. I'll probably print your report and show it to him next time I see him. If you decide to ask Chris about my "theory" about Parr settings, I would be very interested in hearing what he has to say.
PS: Saw picture of your car's rear bumper; I feel your pain. Hope you won't have to re-paint the whole rear end?
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Regards,
Can
997 Turbo + Cargraphic Exhaust (Exhilarating Sound!) + Bilstein PSS10 (Review)