did you dyno your truck before and after the exhaust install? that piping seems a little big. i'm not one to trust the seat o' the pants dyno. seems that large of a diameter will decrease low end torquecurley686 said:I got my exhaust done this week...Flowmaster with 3" pipe and a K&N filter...What a difference it makes on the bottom end and it sounds great! Its hard to have a 'soft' foot on the gas.
SD,SD_Frontier said:I was thinking custom 2.5" mandrel bent piping from the cat back and a less restrictive y-pipe going into 50 series suv flowmaster muffler. again 2.5" going out to a 3" tip
this is the recommendation i got from several exhaust techs for this engine and vehicle.