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I just lowered my car(neuspeed sport w/ tokico HP's) and this weird noise in my right rear just started up. It's the kind of noise when people don't index their struts properly but I get it when I'm cruising. Not as loud and noticeable but it's there. I have to turn off the stereo but it's definitely there. I think I installed everything right and all the bolts are all tightened up so I can't put my finger on the problem. Kinda sounds like somethings loose and flapping around. It's very faint and repetitive but I don't know why it happens when cruising on a smooth surface and not over bumps. I can also hear a little clank when i make abrupt stops. Not indexed properly? I'm not sure cause theres no noise over bumps and whatnot.

 
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i have the same set of springs and have the same problem. i had it checked at a shop and they said that the spring coils make that noise when they touch each other. they also told me its a common problem with nuespeed. anybody on neuspeed with the same problem?

 
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Well, it worried me cause it happened when just cruising, very weird. But wasn't loud or anything just barely noticeable. Actually today it went away so I'll keep my fingers crossed. Also, I need to carry some weight around on the right side of my car, its sitting a bit higher than the driver side of the car.

Has anyone experienced horrible gas mileage after they lowered their car? Is it from alignment being out of spec? Didn't know it made that much of an impact but could be some other things. I'll get an alignment, add some injector cleaner, need an oil change, and hopefully my gas mileage will get better.