The Only Exhaust Thread You Should Ever Post In

[Fenix]

ill throw in my hat towards apexi, ive had it for 2+ years now and am very satisified with it. The sound of it changes, subtly, with each mod. For instance, I have CAI, TSX IM, DC Ceramic Header. And i noticed a slight change in the exhaust note at different RPMs.

[k24low20z]

x1 on the apexi, i had my dual exhaust on my i4 for about three months and i love it..

[timot_one]

+1 for Keith's A'PEXi.  It sounds awesome.

[clapton924]

Anyone know how much trouble I will have getting the mid-pipe and axle back to fit? I know it will take some custom work...but trying to make sure this can be done before I start buying parts.

[timot_one]

If I were in your shoes, what I would do is buy the mid pipe and muffler, have the shop just cut the pipe and only use the muffler, pre-muffler, and that resonator looking thing.  You may be better off having the shop remove your exhaust system and fabricate everything from the cat back.  That will be the easiest way to have this done.  I highly doubt you will be able to get those components to fit your car, so it's better to just use the components you want and have the rest fabricated.

[clapton924]

Word. These parts can be had for cheap

[Skippy]

I agree with Tim on this one.  The problem with the Si exhaust is that it is not made for use on an Accord.  The cars probably have entirely different mounting locations and it would be your best bet to buy the muffler of your choice and have an exhaust shop custom fabricate an exhaust system that employs it.  I personally believe that you will pay more for the entire Si exhaust with the pipes and goodies than what you would pay to have an exhaust shop use their on-hand parts.  This eliminates the butchering of a stock exhaust system, and allows the shop to craft a custom work of art for you.

[clapton924]

Thanks for the insight skip.  I will take all of this into consideration.

[thisaznboi88]

listen to tim and skippy. They know what they are talking about. You could probably save some $$ also unless you can get the si muffler for cheap. Like for me I can getting 2 oem Tl muffler for 100. and going to put 60 for a 18in magnaflow resonator. and another 100-120 for labor and have them do the exhuast hole cut out. I know performance is not much but I really like how it looks. TL on accord looks so right.

For complete exhaust system i recommend APEXi WS system, Greddy evo, and for custom check out some here http://www.v6performance.net/forums/sho ... p?t=144756

[timot_one]

To be completely honest, I would highly recommend an A'PEXi WSII exhaust system for the i4 Accord.  It's a complete bolt on system so you don't have to pay for fabrication and could install it yourself with jack stands and basic hand tools.  It sounds awesome in person also.  It's quiet, mellow, but if you know how an Accord is supposed to sound, you know this is aftermarket.  I helped Keith install his A'PEXi WSII with a DC CC header and Magnaflow high flow cat, and it sounds awesome as hell.

[Skippy]

I can also vouch for Apexi's temperate sound on the accord.  My buddy Nick used to have the WSII on his car and it sounded nice and quiet.  I was suggesting in the previous post that you get the Si muffler and have it integrated into a custom setup without the Si midpipe.  Just wanted to make sure my point got across the right way.  There are a number of ways to skin a cat and it's totally up to you.

[clapton924]

I can also vouch for Apexi's temperate sound on the accord.  My buddy Nick used to have the WSII on his car and it sounded nice and quiet.  I was suggesting in the previous post that you get the Si muffler and have it integrated into a custom setup without the Si midpipe.  Just wanted to make sure my point got across the right way.  There are a number of ways to skin a cat and it's totally up to you.

Yeah, I understood what you were saying skip.  I don't know too much about exhaust systems...will not including the Si resonator (the round looking muffler before the muffler) dramatically change the final sound?

I do like the Apexi WS2...its just that it costs $500.  I can get a 2009 complete catback off 8thcivic for $150 shipped.

[clapton924]

What is this thicker looking section on the stock Si mid-pipe?

[timot_one]

It's probably a small resonator to reduce noise.  From the cat back, it looks like there is a resonator, a pre-muffler, and then a muffler.

[clapton924]

Hrm...I wonder if the pre-muffler will fit under our cars...it looks longer than our stock pre-muffler.  Maybe I should just start with the axle-back and see how it sounds.

Our stock I4 pipe is 1.75" diameter right? I am pretty sure the Si is 2 or 2.25"