From what i have read Koni FSD is being developed with a shorter stroke for lower springs..
B6 is for up to 30mm drop
Koni sports are held in high regard!
BTW i have the B8's... really really good
My input on B6 vers Koni (tried both)
Last year I upgraded my GTV V6 from the OEM setup to B6īs front and back and replaced the original springs with HR 30mm lowering springs. I think the car stands much to tall with original setup and need to be lowered to look, and act, like a real sport car!
The B6 is setup to have the best combination of comfort and sporty behavior. Comfortable in the normal range and sporty/firm when pushed. What interesting is that the B6 is best combined with standard hight springs, but can take a lowering up to max 30 mm got this from Bilsteins website.
I lowered the car to the dampers max and I think it makes them perform less optimal than it would on OEM springs.
You donīt get quite as much comfort in the normal range, since the damper sits so low in the stroke, making the damper behave as being driven to the limit... even though your just driving at cruise speed (sorry for my lackfull english, I hope you get the point)
Still itīs a great upgrade and makes the bar corner much better.
But I believe B6 is rated to be 10-15% stiffer than OEM. With 30mm lowering springs I would rate them 30-40% stiffer, maybe more.
A real shame the B8's not out there for the GTV!
Well, the B6 didnīt quite give me the look I wanted for the car, since the front end still stood to high, actually I the 30mm lowering wasn't visible at all it did work somewhat at the back so my car ended up looking like I had filled the trunk with garden bricks
Not funny, actually... since it made the car handle real bad with no front wheel grib/traction at all.
So I found a hight adjustable coil over suspension that came with a TÜV approval we need that in Denmark
This was the suspension I got:
Secure UK tuning store Alfa, Ferrari, Fiat, Lamborghini, Lancia, Maserati
Eventhough itīs produced by FK itīs all Koni Sport inside.
Well, how did it perform?
It did nail the right look and the car now "stands" fantastic with the exact amount of air above the tires to the chassis it should have been born with, but damn it rides like at pile of bricks. This suspension is totally unsuitable for everyday road use and should be used for track days only.
Absolutely no comfort at all, itīs like riding on top of a hard rubber ball. Bouncing constantly. Itīs like the only suspension there is, are the tires!
Of cause I canīt say if this isnīt because of the coil over setup, maybe the Koni Sport dampers perform well with a normal setup of separate dampers and spring?
So I still haven't found the right setup and will probably go back to the B6, but with a Novitec 40mm lowering spring in the front and my H&R 30mm in the back. Hopefully that will get the nose down, give grip and make the car look right.
I'll keep you posted if I find the right setup
and Iīll track this post if you get there before me
Cheers from Denmark