Accord V6 Forum banner

1 - 13 of 13 Posts

·
Registered
Joined
·
69 Posts
Discussion Starter #1
If I were to do a custom exhaust setup on my 03 accord coupe v6 what is the diameter of the stock piping from the cat leading to the y pipe that I would need? And stainless steel is best material right?
 

·
Registered
Joined
·
161 Posts
If you read and search a lil more on the forum you will find different kind of setups that work for different people and depending of what you want I know you are new but i was once there and i read all the threads till i found what i wanted use the search tool up in the forum and type exhaust it will give you a lot of results of threads....
 

·
Registered
Joined
·
69 Posts
Discussion Starter #3
Yes I've been doing a lot of searching. I have an extra magnaflow catback exhaust off my Mazda model number 15803 and was wondering if I could fab it up somehow. It is all 2.25 piping so I was thinking of doing a custom pipe leading up to the y. The only concern I have is that the mufflers are offset going in and center out and as a result would affect performance/tone. Any input on this would be appreciated!
 

·
Registered
Joined
·
8,737 Posts
2.5-2.75 mid pipe split to 2.25 or 2.5.

It really depends if you can find 2.75 piping.

Just know that the stock cat outlet is only 2.25 and uptop where the primary cats are they are 2-2.25 in? i dont remember.
 

·
Registered
Joined
·
4,828 Posts
Do you want performance? Sound? Both? If you want performance, go 3in. If you primarily want the sound, go 2.5in from the cat. I saw just get rid of the cat, the primary cats underthe hood do 90% of the work anyway. Magnaflow makes great mufflers as do Vibrant/Dynomax/Flowmaster/Apexi/Greddy, etc.

I wouldn't try to hack up the Mazda exhaust. Try selling it then getting either a custom catback, or look in the classified section.
 

·
Registered
Joined
·
11 Posts
I redid my whole exhaust today. Had Magnaflow mufflers installed, from the mufflers to the y I had 3" stainless pipe installed. Had the resonator and midmuffler removed and replaced with a straight stainless steel 3" pipe. The sound is amazing... and the car seems to breath alot easier. Maybe its just me but it drives alot 'peppier'.
 

·
Registered
Joined
·
161 Posts
^ +1 ....our exhaust is 2.25 if you want performance with good tone and not that much of sound do a test pipe and 2.5 all the way back from there with 1 or 2 reso
 

·
SFL AV6
Joined
·
1,024 Posts
I redid my whole exhaust today. Had Magnaflow mufflers installed, from the mufflers to the y I had 3" stainless pipe installed. Had the resonator and midmuffler removed and replaced with a straight stainless steel 3" pipe. The sound is amazing... and the car seems to breath alot easier. Maybe its just me but it drives alot 'peppier'.
Start a thread in performance section, post some vids and pics. Thank you sir
 

·
Registered
Joined
·
69 Posts
Discussion Starter #10
sonnick thanks- def gonna scrap that idea and just sell them

sonnick and elliot- yes exactly, i want performance with a good tone and not too much sound..but what/where is a test pipe and same for the reso's? my exhaust is stock right now but ill be getting rich's v3 j pipe soon. Should i wait to do the custom catback after i buy the j pipe?

jiga and stokes- yes that would be awesome post some vids/pics! much appreciated!
 

·
SFL AV6
Joined
·
1,024 Posts
sonnick thanks- def gonna scrap that idea and just sell them

sonnick and elliot- yes exactly, i want performance with a good tone and not too much sound..but what/where is a test pipe and same for the reso's? my exhaust is stock right now but ill be getting rich's v3 j pipe soon. Should i wait to do the custom catback after i buy the j pipe?

jiga and stokes- yes that would be awesome post some vids/pics! much appreciated!
I would wait to do custom catback after jpipe install, plus the 1 peice jpipe v3 replaces 3rd cat (more performance and more sound with the catback exhaust of course)
 

·
Registered
Joined
·
161 Posts
if you are going with j-pipe just wait and with that you would not need the test pipe....test pipe is to delete the 3rd catalytic that is right after de j-pipe RV6 long tube J-pipe takes care of that if you want something not agressive go with j-pipe, 2.5 " straight pipe to a single 2.5" magnaflow reso going out on a dual 2.5" exit to the mufflers ;)
 
1 - 13 of 13 Posts
Top