It'll sound nearly the same as straight pipes, just not quite as loud. The h-pipe might hold it's tone slightly better. The straight pipes and h-pipe will be deeper than thex-pipe.

 

How many elimators do i need?

 

What state do you live in? You got emmisions? you can always just have them do it right after the cat so MIL's are not needed

 

Louisiana...I wanted both of the flowmasters dumped too..

 

**** you could do this in your garage then. Cut right behind cats, get some clamps and just clamp right behind the clamps, onto the muffler, then the dump. Going over the axle is where it cost

 

I'm a car idiot lol...I wouldn't trust myself working on any part of my car yet...I'm still wanting to learn more though.

How much louder will dual turned downflowmasters with o/r h-pipe be over a single flowmaster turn down????

 

Don't even waste your time with a single exhaust setup. Go true dual (straight pipes, h-pipe, or x-pipe)or forget about it. As time progresses, you'll figure out you wasted your money with the singlesetup. The o/r h-pipe will be much louder, hopefully won't drone since it's a turndown. Sorry to sound so harsh, just don't want you to do something you'll regret.

 

I already have the single exhaust set up lol...thats what im talking about is changing it over to an h-pipe with dual flowmasters. How do I do it?

 

You will need 2 mil eliminators for the rear O2 sensors , and if they do emissions inspections where you live you will need to leave the rear cats on .

 

if your buying this right now your wasting your money sounds like you put no tough into this