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Have had my Black LTZ with everything but a roof TB for about 2,700 miles now.
Few minor problems, but all is good.
I've installed a K&N Filter in place of the stock filter. Exact size match was found on filter # 2417 but thanks to GM's design, there were some other minor mods on the intake that needed to be made. Breaths much better now. That's the start.
Cold air intake is in the works.
Anyone have information on an aftermarket exhaust yet? Nothing lound, but based on what I've read from GM engineering, a good aftermarket system will add quite a bit more power to the inline 6. Aftermarket Headers would certainly help, but the darn thing is so new......nothing out yet.
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