i searched through hmt few threads about mangnaflow mufflers, just seeing is any current members are still running there. i got the 12280 in the mail today for my ef. it has a 2.5 input and dual 2 out puts. its basically going to be set up sideways like the original si exhaust. my turbo down pipe is 2.5" and i am going to weld that to a 6" long 2.5 flex section that i got, then weld in my 2.5" magnaflow hi-flow cat. i am debating if i want to try to find a 2.5" resonator. i guess i ll try the exhaust system out firs without the resonator, then if tis too loud, ill add one in. i also need to find 2 exhaust tips that will slip onve the 2" piping that arent too big, kinda like the hks ef exhaust. not sure how bid the i.d. on the 03 acura tl exhaust tips are, but those would be perfect.

heres the muffler


flex section


hi flow cat and misc 2.5" piping


snapped a few new pics of the car

 

that cat is built by carsound and the guts will melt.

 

intresting, is carsound a magnaflow company, i could of swarn it came in a magnaflow box when i brought it

 

I have 2.5 with nothing but a $20 thrush turbo muffler on it. nice and quiet but still sounds nice, I've heard those magnaflow mufflers on turbo cars, they are pretty noisy but not horrible. def. has a nice throaty sound to it.

 

they do come in magnaflow boxes

 

well, i will see how long this one holds up.

ya or nay on the resanator

 

Gut the cat, you won't regret it. You might not need to where you are, but in VA you need to have a physical cat, everyone just guts them.

 

if i wanted to i could just run a straight pipe. but i really wanted to have some type of cat on there

 

Just run your afr's a hair richer once you hit a higher load (or on speed density systems once you start hitting a decent boost level, maybe above 4-5 psi). It won't make as much peak power, but it'll save the cat by running cooler egt's. If you try and keep your boost afr's near 11 at the leanest point (above the 4-5psi mark of course) you should be ok.
As for the muffler, I had the single 2.5" inlet/outlet on my old turbo'd b16 hatch. Sounded great, very quiet (a little too quiet for me, I like to cause a ruckus ), nice deep tone and no rasp. I think you'll like it.

 

thanks for the info, anyone have sugestions on the resanator?