Hey all, I have been doing some research but I was wondering If i could run 3" true duals to 4" tips with only 2 high flows on a 5.4, any gains with this system or does it sound stupid?? I want to redo my current setup that i have now soon and im just trying to get some ideas from anybody. I have my 4 stock cats, true duals 2.5" pipe to 3.5" tips and that's it. thanks guys.

 

3" will be pricey, but it will sound good!

 

Start by puckering up and then planting a big fat kiss good bye on your low end. The best gain you will get will be using 2.25" piping.