I have a 2005 Dodge Ram Quad Cab with a 4.7 liter engine. I would like to go true duals with this truck to optimize gas mileage and performance. Is this the best route to go? Should I use a Y, X, or H pipe? Any recommendations would be appreciated. Thanks.

 

The best design and setup is that from the manufacturer and engineers. If you want the best mileage, leave well enough alone.

 

leave the factory logs, they flow really good, the issue is the y pipe, at the collector it is extremely narrow, you can purchase a larger y pipe for around $75.00 or have a shop fab you up one