Xasthur

I bought the car and it just came with the flowmaster 40 series muffler with stock pipes. It sounds nice but I know it can sound alot meaner. Can I just buy the o/r h-pipe? or should I get headers as well? Any performance gains if i get the h-pipe or is it strictly for sound? Would I need a catted h-pipe? Thanks for all the help, I'm still learning...

86gt5.0HO

An O/R H whould sound meaner. But I would also putr on super 40's, instead of 40 series.

Xasthur

I'm confused about the catalytic converter...Should I just leave it there? Or do I take it out when i take my pipes out? Where exactly is it located? Before the muffler? Will it pass smog?

Sorry for all the questions, but I appreciate your help.

justamemory3

I have pretty much the same setup and am interested in this aswell, if anyone can help us out. Thanks.

stanglx2002

since you have emission you should do what most of the on here do and buy yourself a o/r h pipe you will gain about 10-15 more hp bc there are no cats on it and it will be a bigger diameter they are 2.5 in and the stock is 2.25 and yes it will bolt to your stock system if you are thinking that. The o/r hpipe will get you a louder and meaner sound and more performance. As for emission just keep your stock h pipe and when emissions come around bolt the stock one back one and get it tested and then put the o/r hpipe back on when your done.

justamemory3

Are there any sensors or anything you have to worry about when switching the pipes out? Thanks again.

Mustang5.0_GT

Keep your mufflers now and buy a BBk Off Road H pipe ... it has strait through pipeing so it will sound ALOT nicer and meaner .... anyway you need the Cats " catalytic converters" to pass admissions , but take your car before you put the O/R h pipe on pass it , and then switch them just save your old H pipe with the catalytic converters on it for the next time you need to go to admissions , thasts your best bet ... might be a little rusty getting off just have some PB Blaster with you and hopefully an air rachet .. only 4 bolts at the top and 4 at the cat back

sntheticdelusion1

or just ask buddies of yours and people at work if they know a emissions man that will take a little bribe i found a guy that owns a little shop and every year he charges me 60 bucks on top of the 20 to do my emissions i just call him up he calls me when he has them done its alot better and less work to do that

ballzoutstang875.0

i have a bbk h-pipe but id get an x- pipe if I were u. sounds louder and better than origonal h-pipe

justamemory3

sorry for all the questions, buti noticed that one of the bolts on the front passenger side is tucked way up there. how do i get to this one?