I have been told that HFC basically will not last on an FI'ed 370Z. I think I will stick with stock cats until those blow up and then go TP.
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Car Sold! Pleasure being a part of the Z community. 
New ride: 2015 GT-R - 647 WHP / 641 WTQ (e85) & 543 WHP / 519 WTQ (91)
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