i have a dc sport 4 2 1 header with test pipe into a 2.25 magnaflow dual exhaust i did the cat back sounded good then i did the header and it sounded awful do to not having a resonator i installed one a 18 inch magnaflow resonator and the rasp is still there when i get on it . got any ideas for me but to lwt every one know it sounds amazing!!!! besides what i have left



http://www.cardomain.com/ride/2623318

Here are a few thoughts:
Replace the straight through mufflers with baffled turbo mufflers (Dynomax, Hooker, Flowmaster, etc.).
Replace the test pipe with a high flow cat.
Replace the 18" resonator with a 22".
If you placed your resonator where the test pipe was (cat location), add a second resonator behind it, where the resonator normally would go.

Any of these will help, the most noticeable differences would be in adding the cat, and/or replacing the straight through mufflers. It's up to you what you want to do.

High flow cat instead of a test pipe and longer resonator should help a bit. Keep the straight through mufflers, no point in adding a header and full exhaust if you're just going to block it up at the end with baffled mufflers.


_________________________________________
450WHP Turbo Ecotec swap in the works...

All correct..

Get a cat back in there and you'll be fine.

-M





Remember....syringes go in the RED waste basket.

thanks guys



http://www.cardomain.com/ride/2623318

i got the same resonator, there is barely any rasp, only a very small bit when i first start it and get on it, otherwise, its perfect



12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]

what do you have for the rest of the car?



http://www.cardomain.com/ride/2623318

and do you guys think a high flow cat will do the job?



http://www.cardomain.com/ride/2623318

check for exhaust leaks...made my car sound horrible when i had one.

^^
My bad,

I meant, get a high flow cat in there and you'll be ok.

Those cat converters absorb a lot of the sound.

-M


Remember....syringes go in the RED waste basket.

pacesetter 4-1 header, magnaflow highflow cat, magnaflow 18" magnapack, magnaflow 4x8 oval muffler, magnaflow 3" tip.



12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]

evilmonkitar wrote:pacesetter 4-1 header, magnaflow highflow cat, magnaflow 18" magnapack, magnaflow 4x8 oval muffler, magnaflow 3" tip.

this sounds really good you say? I have the exact same stuff at home waiting for a spring install.

DavefromEngland wrote:

evilmonkitar wrote:pacesetter 4-1 header, magnaflow highflow cat, magnaflow 18" magnapack, magnaflow 4x8 oval muffler, magnaflow 3" tip.

this sounds really good you say? I have the exact same stuff at home waiting for a spring install.

yea, it sounds nice. ill see if i can get a new video of my exhaust when i have some time



12.33 @ 111.67 mph [Oct 2009]
Dyno'd on 08/02/09 - Mustang Dyno:
327.6 WHP 333.6 WTQ [10.1 AFR]

pacesetter 4-1....no cat. ractive muffler sounds quiet nice

kw_z24 wrote:pacesetter 4-1....no cat. ractive muffler sounds quiet nice

Maybe from inside the car.



FORGET GIRLS GONE WILD WE HAVE GOVERNMENT SPENDING GONE WILD!

hell its prolly loud inside the car...

If you want a non raspy exhaust your gona need a cat and bigger resonator. Im catless using a stans 4-2-1 header, 30" glasspack, and dynomax st and mines not too bad; but of course I have some rasp due to being n/a and having no cat. Mines a bit worse than it should be though, I gotta retighten all my downpipe bolts and use some lock washers.

evilmonkitar wrote:

DavefromEngland wrote:

evilmonkitar wrote:pacesetter 4-1 header, magnaflow highflow cat, magnaflow 18" magnapack, magnaflow 4x8 oval muffler, magnaflow 3" tip.

this sounds really good you say? I have the exact same stuff at home waiting for a spring install.

yea, it sounds nice. ill see if i can get a new video of my exhaust when i have some time

Cool, been wonderigin if I made the right choice, most people have larger resonators (22") around here and still some raspiness so I was worried I'd have a lot more.

well i plan on supercharging it do you think it will get rid of the raspiness by going fi or still put high flow on there?



http://www.cardomain.com/ride/2623318

you guys think a high flow cat will do the job? not a reg cat.. i am ready to buy it so i want your guys input



http://www.cardomain.com/ride/2623318

Quiklilcav wrote:Here are a few thoughts:
Replace the straight through mufflers with baffled turbo mufflers (Dynomax, Hooker, Flowmaster, etc.).
Replace the test pipe with a high flow cat.
Replace the 18" resonator with a 22".
If you placed your resonator where the test pipe was (cat location), add a second resonator behind it, where the resonator normally would go.

Any of these will help, the most noticeable differences would be in adding the cat, and/or replacing the straight through mufflers. It's up to you what you want to do.

all good options

so basically spend doublw what youve already spent.
get a cat....theres no reason for you not to have one. your car is not a racecar. that will help the rasp somewhat.
i have the same setup except the Rk header and i dont think it sounds all that great.

double i only have to buy a cat



http://www.cardomain.com/ride/2623318

i was referring to the people telling you to replace youre mufflers, resonator ,and cat

true lol ====



http://www.cardomain.com/ride/2623318