Originally Posted by teflon_jones

Well I guess I'll be the voice of dissent then sorry! I like the rear lip but the diffuser and front lip look tacked on to me and not integrated well into the car. I'm not really a fan of most of the Vorsteiner stuff though going all the way back to the 996. But all that really matters is whether you like how they look!





I don't see how it will affect the results "greatly" either. I doubt such a small change will have much of an effect except at very high speeds (150+) and even there I wonder just how much?

Those specs are interesting, but nobody is going to rent a wind tunnel (including Vorsteiner) to test how much they actually change them. It would be awesome to rent one for a week and test out all of the different wings/diffusers/lips/etc you can buy to see which ones really work well. I'm very curious myself what changes my fixed and higher than OEM-raised position rear spoiler and MAShaw GT2 front bumper cover and lip have on the car. Personally I've never noticed any difference from stock on the street or track including runs up to well over 150, but I doubt anybody would be able to tell with their seat-of-the-pants wind tunnel even if it were possible to do back to back runs immediately after one another.

Originally Posted by teflon_jones

Well I guess I'll be the voice of dissent then sorry! I like the rear lip but the diffuser and front lip look tacked on to me and not integrated well into the car. I'm not really a fan of most of the Vorsteiner stuff though going all the way back to the 996. But all that really matters is whether you like how they look!





I don't see how it will affect the results "greatly" either. I doubt such a small change will have much of an effect except at very high speeds (150+) and even there I wonder just how much?

Those specs are interesting, but nobody is going to rent a wind tunnel (including Vorsteiner) to test how much they actually change them. It would be awesome to rent one for a week and test out all of the different wings/diffusers/lips/etc you can buy to see which ones really work well. I'm very curious myself what changes my fixed and higher than OEM-raised position rear spoiler and MAShaw GT2 front bumper cover and lip have on the car. Personally I've never noticed any difference from stock on the street or track including runs up to well over 150, but I doubt anybody would be able to tell with their seat-of-the-pants wind tunnel even if it were possible to do back to back runs immediately after one another.

Originally Posted by does195

I can tell you there is an effect you can feel. I ordered the TechArt type II rear spoiler as well as the Type I for my 991. As the front spoiler was damaged, I had my shop install the rear spoiler while waiting for the front spoiler. At 165 I could feel the front lifting from the weight applied to the rear spoiler. The front was installed today. I'll report back when I get a chance to "Air it out"

Originally Posted by shumpdog

I'll have to try and get mine to 165 to validate....

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Originally Posted by kobett

Bumping this thread...

shumpdog, thanks for sharing pics! Car looks great! I have the same rear diffuser. Since it covers the rear underbody, have you had any issues with your local dealership regarding oil changes? I need to do an oil change later this year and afraid they're going to rape me on a simple oil change if they have to remove the rear bumper.

Also, are you lowered on anything? I have H&R Springs and clearance is a bit too low. I've scraped more times than I want to

Can you post some some profile pictures of your car? Do you have aftermarket side skirts too?

Originally Posted by shumpdog

Thanks for the msg. I do not have lowering springs. My car has PASM Sport so it's lower than stick and lower than PASM. My side skirts have recently been painted body color which makes it look lower. I have the exterior paint package so with the skirts painted the entire exterior is GT Silver including the deck lid spoiler.

Oil changes - my dealer does not charge me extra to remove and replace the diffuser. You do not need to remove the bumper - just the diffuser which only has four bolts and pressure fits with tabs into the same slots as the OEM diffuser. Make sure they are careful not up break any of the tabs. If they are not careful that might happen. Will post pics of profile soon.