ETP

I'm considering changing the cats and muffler on my 99E430. looking to increase performance. Not sure what to look for. Looking for information on REASONABLY priced parts. any info is welcome. thanks

43fatman

Well I do not think you will get much of a performance gain but removing the resonator and putting in a X pipe will give it a great sound. Im working on getting a video to hear the sound clip of mine.

Matthew

ohlord

above .resonator delete and an H pipe of the same diameter as the exhaust pipes is about all you need.An H pipe will give that engine a few more ft lb of torque over an x pipe and torque down low is what you are looking for.
ohlord

h0rn3t920

that is all u did? remove the resonator and putting on a new pipe?
ive got the 420 and i think its a single pipe to the back. so i dk if i can do the x pipe or H pipe.