I went the same route. I figure this combo should take advantage of the factory box and free up some airflow to compliment the headers+tune I plan on later this year.
People essentially go to the Milford show after work that day, so 3-4pm cars are there but still lots of spots to park. The bordering Sears lot usually gets half-filled too. The prime spots just off the main Kroger entry are what go first. It's a 'bring what you got' event for sure; all...
Longtime lurker here, finally saying hello to all my fellow local enthusiasts. I saw mention of the Friday cruise-in at Kroger in Milford- I attended on occasion when I had my '86 C10 and '87 Silverado. Hopefully I can get some decent shoes on the car before the really nice weather gets here...
A tune won't fix your issue brother. Definitely try to record or duplicate the problem to show your service advisor or manager while its still under warranty. Tuning it will just give the service center something to blame it on, and you will almost certainly still have the problem...