I just installed the R Tune as well over the weekend. I noticed a sort of "ding" noise a couple times on the first drive on the highway, I assume the exhaust wasn't fully heated up yet. Since that first time I don't recall noticing the noise while driving. Do we think this could possibly be part of break-in?
I will hear creak or ding noises after I've turned the car off and it's cooling down, but as we know metal contracts and expands with heat, it being a multi-piece system it's bound to make noise.
Where did you guys buy your R Tunes from? I got mine from CZP and they said they hadn't heard of this issue happening, but I did forward them this thread to look into it just in case. I am certainly keeping my ear out in case the noise starts to happen more frequently on the road.
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