The Only Exhaust Thread You Should Ever Post In

[suleman_manji]

Hmm, I was thinking that also but wouldn't the amount of composition materiel affect the sound?

[timot_one]

Obviously, a larger resonator with equal internal properties will be quieter than a smaller resonator.  Using quick and dirty math, the oval resonator has a volume of about 300 ci, while the round resonator has a volume of about 250 ci.  Also, the oval resonator is labled as an "Ultra Quiet" resonator, while the round one is just a "Bottle Style" resonator.  That should clue you into a little more about their sound characteristics.

[Knocturnal84]

hey does your car throw codes when you swapped out the oem cat for that one

whats the part number for the maggi high flow cat you used

[Fenix]

ive got the same setup minus the hi flo cat. If anyone is on the fence about doing this i highly recomend it. I want to do the dual setup.

[Paulius005]

hey does your car throw codes when you swapped out the oem cat for that one

whats the part number for the maggi high flow cat you used

Same question

[timot_one]

No codes when he did the swap.

[Paulius005]

No codes when he did the swap.

Do you have a part number by any chance? Or do the codes appear later on for some reason?

[mnkyman]

Nice install! I'm betting it sounds just as good as it looks. Using the cement blocks there for extra security incase a jack failed?

[timot_one]

No codes when he did the swap.

Do you have a part number by any chance? Or do the codes appear later on for some reason?

I believe the Magnaflow part number is 27405.  It's listed as an 05-07 part, but there's no reason why it won't fit an 03-04.  I don't really understand your second question though.  There were no codes after we did the swap (and replaced his bad secondary O2 sensor) that I know of.  I believe everything has been just fine since the install.

Nice install! I'm betting it sounds just as good as it looks. Using the cement blocks there for extra security incase a jack failed?

It sounds awesome.  Definitely a good upgrade.  You are correct about the cinder blocks Sam.  We used jack stands at all 4 jack points, the cinder blocks at the front wheels, and had a floor jack at the rear.  You can never be too safe.

[mnkyman]

No codes when he did the swap.

Do you have a part number by any chance? Or do the codes appear later on for some reason?

I believe the Magnaflow part number is 27405.  It's listed as an 05-07 part, but there's no reason why it won't fit an 03-04.  I don't really understand your second question though.  There were no codes after we did the swap (and replaced his bad secondary O2 sensor) that I know of.  I believe everything has been just fine since the install.

Nice install! I'm betting it sounds just as good as it looks. Using the cement blocks there for extra security incase a jack failed?

It sounds awesome.  Definitely a good upgrade.  You are correct about the cinder blocks Sam.  We used jack stands at all 4 jack points, the cinder blocks at the front wheels, and had a floor jack at the rear.  You can never be too safe.

yup! at first i saw the blocks and was like WTF ARE THEY DOING!!! lol, then i noticed the jacks

[Paulius005]

No codes when he did the swap.

Do you have a part number by any chance? Or do the codes appear later on for some reason?

I believe the Magnaflow part number is 27405.  It's listed as an 05-07 part, but there's no reason why it won't fit an 03-04.  I don't really understand your second question though.  There were no codes after we did the swap (and replaced his bad secondary O2 sensor) that I know of.  I believe everything has been just fine since the install.

Nice install! I'm betting it sounds just as good as it looks. Using the cement blocks there for extra security incase a jack failed?

It sounds awesome.  Definitely a good upgrade.  You are correct about the cinder blocks Sam.  We used jack stands at all 4 jack points, the cinder blocks at the front wheels, and had a floor jack at the rear.  You can never be too safe.

Hmm that is an expensive site you got there... in Google shopping there is a bunch around 140... Thanks a bunch for the part number though... and my second question was simply that if you put the cat on there will the codes appear later, because i remember Skippy mentioning somewhere that people always end up throwing codes... But it's good to know that this one does not

[timot_one]

That site has high prices because it's the manufacturer's site, so MSRP is listed.  That's the actual Magnaflow product page.  As far as the CEL, you will be fine with this cat.  I have a 5400 series universal cat and I threw codes when I installed it.  That was resolved with $5.00 in parts.

[Knocturnal84]

i put the defoulers on before i started the car and never threw a code .... i also have the 5400 series universal cat...2.25 in/out

[clapton924]

With my new hi-flo cat the only thing left is the remaining exhaust.  I like the quietness of the stock exhaust but would not mind a little more sound. I really like how the newer si's sound.  I'm thinking about trying to put an 06 si exhaust on my coupe from the cat back.  What do you guys think? Most aftermarket exhausts I hear are way to "weed-wacker" sounding or loud.

[timot_one]

You can try it if you want.  You may want to consider a TSX exhaust too.