chris0530
Junior Member
I've been having lag in acceleration and my truck revs everytime it downshifts. I have a 2018 Ram 1500 3.6 V6 with a Flowmaster 40 box and K&N intake. The issue started after I installed the Flowmaster box. Is there any tuning to fix this or should I put the stock muffler back on? Based on several conversations I've had, it seems like backflow might be a factor here. I like the way it sounds but I'd rather have a truck that runs good rather than a loud truck. Any help is appreciated, thanks.