Thread: Cat bolts
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Old 02-20-2016, 11:33 PM   #29 (permalink)
Zoom370z
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Join Date: May 2014
Location: Lincoln ca
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Drives: 2011 370z auto 7
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The hardest part of taking out the stock cats were the top bolts one on each cat on top facing the engine bay. And all bolts came off nicely but one bolt snapped and bolt but not to bad. Now for the sound.... the cold start was a little deeper then stock, once at idle it sounded like stock with a little throaty sound. Now once the car settled in it still sound a little quit for me but sounds good when I step on it, not to bad on freeway still sounds like stock just driving at freeway or driving in the city.

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