Possible fueling issues?

Spooler

If you are spraying carb cleaner or throttle body cleaner on the outside of the intake and the engine bogs, you have found a vaccum leak. Address the leak. Look for a sealing issue or a cracked manifold. I would get a new gasket. Silicone is not normally needed on Nissan intakes. You found your issue, now you just have to get it fixed.


Side note: you want to use carb cleaner or throttle body cleaner. Don't use brake cleaner. You want it to burn if it gets into the cylinder.