I recently installed the B16 Damptronic kit on my 2017 Carrera S (non SPASM). 8900 miles on the car, no other modifications. Stock wheels, tires size and pressure.
The rear installed perfectly and at the highest height setting lowered the car 10mm and at the lowest setting gets down to 30mm from stock. (b16 kit was designed to drop 20mm from stock on a non pasm 991 since they were designed back in 2013). being a PASM OEM 10mm drop was accounted for in my measurements.

The front is where the issue is. At the highest setting, the height is actually raised 9mm from stock, and at it's lowest setting I'm at a 11mm drop. Seems that the entire strut is 29mm too tall.
I've been working with Bilstein to see what is going on, but they are still stumped. We checked for correct spring part number, and shock numbers, they are all correct. Went over the top hat assembly and strut mounting points and they are all correctly assembled.

I can get the front lowered to proper heights by dropping the spring perch almost 20mm past the lowest setting but then i'm riding on the bump stops.

Anyone with this setup that this has happened to? Or any ideas of what else I can look into to identify the problem?

 

Is it possible to have twisted bushings on a 991? Had that problem on my miata way back when and it caused the front to ride high because the bushings has been torqued with no load and then twisted when the car was lowered.

Solution was to tighten the supension under load.

 

That is a very common install mistake for sure when doing suspension work, but unfortunately this was not part of the issue. All fixed points were tightened in the air and all moving arms were torqued under standard load.

 

following thinking about this upgrade eventually.

 

Hoping for Bilstein to find the issue. I've wanted these for so long and finally pulled the trigger after so many positive reviews and threads on them.
Still in talks with Bilstein on a solution. So far the only difference is that they have a new revision on the front struts, but kept the same part number. They removed the second locking collar and changed to a single spring perch with a set screw. Also threads are much finer now for a more precise adjustment.
Not sure why they changed it, but so far it's not working.

The ride is great, just looks terrible being over an inch higher in the front than the rear, lol

 

Tennesee Tilt -- all the rage among pickup drivers -- has come to Porsche.

 

Hahahaha, newly living in North Carolina the "Carolina Squat" is the most ridicules thing I've ever seen in the truck modding world. Glad to be apart of it!

 

@Joec500 We were ahead of our time


OP cant add much other than this is what mine looks like installed with PDCC. If you are measuring the gap between Tire to Fender and comparing, set properly the gap will be larger in the front.

 

You and @Joec500 were big reasons to go with this setup. Such a bummer it seems that they messed something up with their strut revisions.

They had me completely remove the front spring and see where it sat and it was pretty good that way. Can’t imagine driving it like that, lol

This is the rear at its lowest setting and the front has no springs! Sitting on bumpstops. Still seems higher then it should be. You guys would know better though.

 

That's crazy (that they had you do that).

What is the distance from the front fender lip to the floor? I can take a measurement on my car

 

Stock PASM (new tires, factory PSI) I was at:
F 28-1/8
R 28-3/8
In that Image I was at:
F 27-3/8 (with no springs) 27-7/8 with spring at the lowest setting
R 27-1/4

 

I just measured my front, which has been set like this for around 2 years, setup as shown in picture

991.1, Carrera S style wheel, OE N1 245 Pirelli Pzero tire

26 7/8 on both sides from garage floor to fender

 

Damn man, I wish. That I was hoping for!
Thank you for doing that. Good to know where I should be at.

If I recall, you have PDCC correct? The only reason I’m asking is because with that I believe you can’t go any lower than the bracket will allow. Guessing that is why you guys removed the 2nd lock ring to get an extra 1/4”?

Sent these images over to Bilstein. I can’t figure how it’s even possible to get a 40mm drop over stock when the strut shaft is already taller than the OEM, yet the lower body is the same size. At 40mm drop the shaft would blow out the bottom, no?

 

Following. Considering this myself. Not cheap but........

 

@AdamSanta85 Didn't see this image originally, disregard the last question about having PDCC. It does look like you could technically drop more if you wanted but will probably be past their recommended limit, or just too damn low.