Hard for me to say, it's been a while since I had stock suspension in the car. The Koni's replaced some very old Boge Turbo Gas struts/shocks and Neuspeed springs, and there's a marked improvement from that setup. I currently have the Koni's set to medium firmness and not terribly low ride height, and so far I'm very pleased - but I'll probably futz with them a bit more as I drive it and things break in.
I can recommend the FSDs, I replaced the stock (performance package) shocks on my 330i with FSDs, and it has the same feel while hard cornering, but soaks up low speed bumps much better. Not much different on high speed bumps, you really notice on the low speed stuff, like a small pothole or something.
I took the plunge and installed FSDs a couple weeks ago. I currently have them paired with Neuspeed sports which look progressive (which seems to scare most people away) but are linear once installed (dead coils compress leaving the rest at a linear rate and no feeling of a rate change while cornering). I only have 300-400 miles on them, and I am not a suspension guru, but here\u2019s my initial input. Also, this is with the stock all season tires and without an alignment (yet): The bumps on city streets with this combo are \"dulled\" but definitely still there. This combo is a bit more comfortable than stock but I wouldn\u2019t say it\u2019s radically different comfort-wise; however, it is also ~1.25\u201d lower and with a higher spring rate. General handling around town and \u201cspirited driving\u201d is improved with less movement all around. You get a more planted / hunkered down feeling. When pushed hard, the float/unsettledness is reduced but definitely still present, for example at higher speed mid-corner bumps.
I've also put koni fsd on my wife's x5 and added the factory sport springs which are firmer but not lower. The handling is marginally better and the ride is a little smoother than stock.
I've have FSD shocks with Neuspeed regular springs on my MKV Jetta. I love the ride, and improved handling.
I ran the FSD shocks on my MKV GLI for about 55k i can tell you that after a while the floating starts to appear... you mostly notice it at about 45mph over smaller bumps...
The rear Boge Red shocks were shot, so I put in Koni Yellow Sports to match what is in the front and replaced bushings with AUTOTECH Polyurethane; kept NEUSPEED Sport Springs
Running Koni FSD shocks and Eibach Pro-Kit, the Car is mostly used as a family car and wife, but wanted to stiffen things up a bit and close the gap in the wheel well area. Been running these for about 10 months and I LOVE the look, but the ride SUCKS!!! Its just way too bouncy for me and The amount of travel before the shock bottoms out seems like it is about 1\" (although I know it is more) and then you feel all that force through your body. It also seems very \"bouncy\", the ride in the passenger seats is even worse.
I had the FSD/Eibach setup on my MK5 and loved it. The FSD is a great option for those who dont want to be jolted around constantly but a super stiff suspension but still want it stiff in the corners.on highway and around town it was similar to stock but once I took a good corner it stuck it real well.
I have koni yellow and stock springs on my 06 Gti and the handling is better than mk7 no question!
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