lllsmoothoplll

Hi everyone, i hope that this topic hasnt been killed to death, because i found tons of threads but not exactly what i was looking for.

Im finally doing my exhaust, im doing an xpipe with a borla or magnaflow muffler. I want to use only one muffler dual in dual out. What i need to know is the size of muffler i need to order, or part number? Cant really find a decent shop either, anyone know a good place? I live in LA.

thanks guys in advanced

Kevwood

PM Carlos (2MCHCAR), he's using a dual/dual Borla and had it done in the LA area IIRC.

2MCHCAR

My new exhaust project (being worked on now at Forum Sponsor ACGSD) is using a Borla Muffler 2.5" dual in/out part number #400286. This muffler is "Xed" internally BTW. If you want a good place in LA, try Pepe at High Flow Mufflers in Long Beach,Ca (562) 591-2280. You can call for an appointment and he's pretty accommodating! I gave him a weeks lead time and he fit me in no problem (if you go, tell him his friends in MBworld say hi).

Good Luck and be sure to give us some pics/clips!

lllsmoothoplll

thank you guys, so Borla Muffler 2.5" dual in/ 400286 would be the best size to fit im assuming?

togaclk55

Can't wait to hear some sound clips.
I got that same muffler sitting in my closet collecting dust lol

lllsmoothoplll

went to a couple muffler shops today... none of them recommended an xpipe since im only putting one muffler. Is this true? even though the muffler is dual in dual out the xpipe wont make a difference?

So one of the shops reccomended removing secondary cats and having a 3 inch pipe to the muffler, then the other said just strait pipe it. Im comnfused now and dont know what to do :/

togaclk55

Are you doing quads or just want a louder exhaust?

lllsmoothoplll

no quad i just wanted both pipes from the xpipe to go directly to my muffler, but the shop said it would be better to have one big pipe going to the exhaust. Just want some performance gains with deeper tone,

togaclk55

LOL i'm confused. The borla dual in/out already has an internal x pipe, so you wouldn't need that muffler + an x-pipe, just that muffler. You could always keep your stock exhaust and remove the secondaries or remove the muffler(i think that's what the guy meant by straight pipe).

lllsmoothoplll

ya i think i want to make it similar to 2mchcars rig. If i put on high flow cats, do you guys think i can pass smog check here in LA?

Kevwood

An X-pipe is used to balance the pressures between the two runs/cylinder banks - a single chamber muffler (dual/dual) does the same thing. You don't need an X-pipe since you're only using one muffler.

Dual run/dual muffler systems like what Andy & Wes have benefit from an X-pipe for the reasons mentioned above.

lllsmoothoplll

cool i think i got it, thanks everyone. And if i may ask again, what about passing emmision test. With high flow cats can i pass smog in LA?

sfnight

If you cut the cats off you wont pass smog check. I dont konw if the high flow cats will pass though, cause on ebay they wont let you buy it if you live in California.

Kevwood

I know 300's will pass, next month I have to run my car through, sure hope my 100's are enough.

togaclk55

My smog is due in 3 months as well, I'll let you know if my 300s fail