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Discussion Starter · #1 ·
I have a set of eibach prokits and recently installed a set of Koni FSDs.

The problem though is, I heard this low thumping noise from the rear, with no noise from the front. Does anybody else have this problem? My friend retorqued everything to make sure everything was tight enough but I still hear it.

The sound is more noticeable over big bumps at low speed, I don't really hear anything on the freeway.

Thanks alot
 

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Did you install the springs and FSDs at the same time?
 

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Funny thing. I just installed Koni Yellows on the rear of my 3 on Monday, and I'm hearing the same noise. I have it lowered on Progress springs. I never heard the noise from the stock shocks, only once I installed the Koni's. I've heard this noise before on a couple of friend's Civics. When thinking about it, I have a feeling that the shaft of the shock may not be secured properly in the top of the shock mount. The bolts could be as tight as all get out, but it won't matter, because when forced to compress, they just go through the top of the mount, and then touch the actual body of the car. That would only happen if the shaft diameter was smaller than the stock shock, but if I remember correctly, the shaft of the koni's seemed much beefier. It seems we are indeed experiencing the same problem. Anyone have a fix?
 

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I think that it's installation error.

You can torque the bolts with a normal wrench fist tight, but once you go out on the road you'll hear those noises.

You need a torque wrench and need to check EVERY bolt that was affected by the install.

The problem is if something is not aligned, you can torque the bolt, but it'll still be loose. Everything needs to be seated correctly, then torqued to spec in order for there not to be those noises.

Most likely it's the large bolt holding the bottom of the FSD shock. This one needs to be torqued with a torque wrench.
 
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