Has anybody bought that pipe kit off of ebay that supposedly increases mpg.I guess you cut out your original Y-pipe and weld this one in.The new one is all the same diameter vs the original tapers down to a smaller one and then back up.

 

Lots of people here have installed the Y-pipe, just search it.

 

I installed one 6 months ago or so. My cruising around mpg went froim 11.9 to just over 14. With a good tailwind I got 12.9 mpg at 72 mph headed down to dallas.

02 crewcab V10 4x4

 

I dont know if I really gained much for mpg but It sounds alot better than the stock one

 

Don't expect the y-pipe to increase mpg.

 

A tiny gain here -- if any. Probably none. More of a mid-range power gain for me. And of course, sound.