I'm doing the intercoolers this week. My understanding is that it is good for the car, no cons at all. Just gives the engine cooler air to breathe.
There is a thread on it in here. I think joe@ptech is the only other forum member with stage 4 so you could reach out to him as well.
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2017 Mclaren 570s
2015 Porsche 911 GTS Manual - Gone
2012 550i M Sport Jet Black - modded - Gone
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