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      04-29-2013, 06:49 PM   #51
Drives: E90 335i
Join Date: Oct 2012
Location: Enterprise

Posts: 4
iTrader: (0)

I installed the Sonic Tuning S1's two days ago. The problems I ran into are the lack of detail in the owners manual/install guide. The biggest help for me was the ECS tuning ST coil over install. I'm still left with questions on the install. After I get a final ride height and questions answered I'll post my immpresions on the ride.
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