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No concerns with longevity, provided you are using a quality oil. Realize that you're raising oil temperatures slightly when under load and applying more stress, so cheap oils may have done it. BNR recommends AMSOIL Signature Series in all of their cars, and I can get it shipped to you if you're interested.
Beyond that, I've been running a BNR tune since 2014. I tow my boat and utility trailer with my Cruze, which means higher than stock boost levels for extended periods. The car has been working just great. As a whole, we haven't seen any issues arise from the tuning of these engines; they seem to be built quite well to handle the stress.
You do have to keep spark plug gaps at stock levels (0.025"), you do have to run 91/93 octane fuel. Aside from that, not much else. You don't even need any supporting mods.
Beyond that, I've been running a BNR tune since 2014. I tow my boat and utility trailer with my Cruze, which means higher than stock boost levels for extended periods. The car has been working just great. As a whole, we haven't seen any issues arise from the tuning of these engines; they seem to be built quite well to handle the stress.
You do have to keep spark plug gaps at stock levels (0.025"), you do have to run 91/93 octane fuel. Aside from that, not much else. You don't even need any supporting mods.
