A couple months ago I bought a 2015 Challenger R/T plus STP with 4k miles on it. Got a hell of a deal too! Anyway, have not done many mods yet. Only did the hellcat airbox swap and AFE dry filter. Car came with a full flowmaster exhaust already from the dealer. After I did that, and repeatedly checking the seals on the box, connections and all that, my cold start each morning before work seams to be a bit lagged. A longer crank and almost a hiccup before starting? Sounds like an old school carb fart. Ive read a few forums that are a bit outdated now and was wondering if anybody has had that problem and fixed it or any ideas on what to check? No way its a fuel pump as the thing just eats when I need it too. I always fill up with 91-93. The car starts and runs just fine when its warm, its only after its been sitting around 8 hours. Its summer here in NJ so the temp isnt the issue. Not super concerned I just miss my clean ass cold start in the morning! Thanks in advance. Here is my car btw!