I put mine in a month ago, simple to put in. I'll say this much, it is staying in red mode and it is not being removed. It completely got rid of the lag. I do not have a tune on my Z as I purchased a 15 this spring and will not tune till warranty runs out.
When that happens will prob go the TT route.
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 I am not designed to come second or third.. I am designed to WIN! - Ayrton Senna
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