When it comes to resonators dealing with rasp, does size determine their effectiveness? Would a long resonator perform better that a short resonator? How about a short resonator that has a large diameter? Is it length or diameter that determines a resonator’s effectiveness?

Size Matters!

Just ask bowflex

^^ lol but yeah and its more on the length, but there are good quality resonators that arent too big but does the job well

I've heard that Vibrant resonators are good. They are 14" in length and about 6" in diameter.

I could also go with a Magnaflow that is 22" in length and 4" in diameter.

Out of these two which would be more effective?

aero?

The areo is only 10" in length and 4" in diameter. Had it welded it in and it didn't do much.

i see, links to others for purchasing?

links for the Vibrant and Magnaflow?

i have aero and for a 10" resonator its great.. vibrant is a good brand but havent heard much of their resonator

links for the Vibrant and Magnaflow?

Yes


And to all

Do they work on if its say 20" it cancels out the 65-70mph drone range, or if its 5" its the 10mph range? Is that how it works or am I crazy

Magnaflow
http://www.magnaflowexhausts.com/product.php?productid=6013&cat=19&page=11

Vibrant
http://stores.ebay.com/Verocious-Motorsports

does anyone has the same experience what i have?
i got this 22 inch magnaflow resonator it was working like a charm but after one year i got much more rasp... it seems like the resonator worn out...

You think two 18" Magnaflow resonators that are 4" in diameter would kill my rasp?

How about two 18" Magnaflow resonators that are 6" in diameter?

you would scrape the 6 inch ones.. get two of the 4 inch ones!

You think the two 4" diameter ones would do the trick?

yep.. it will be fine.. of course it wont make any miracles but it will help a lot.
if you dont want rasp go back to oem header.

differant sizes and lengths will make differant effects at differant RPMs.....it is hit or miss to find what you like best....for me 2 shorter resonators seemed to work better than one longer one.

I would go back to the oem exhaust manifold, but I like the look of the header.

i would go with 6" round and with 18" or larger in lenght. youll have no rasp with that set up.

CSOCSO says that a 6" would scrape. I'm thinking that there should be enough clearance. Then again I don't have my tC slammed.

if you lowered go with the 4 inch.. if not.. maybe you could try the 6 inch but dont yell at me if you scrape it.

Well I went with a 22" Magnaflow resonator and a 18" Mangnaflow resonator. So a total of 40" of resonator. That was the most I could fit on the midpipe. Hoping this will silence the rasp.

you just bought it or its installed already?

two of the 18 would be almost the same.

Just bought them. I know 2 18" would have been 36" of resonator. Just being a little precautious with the extra 4".

could you make 4 videos for us?

1) dont put the camera too close to the exhaust.. put it like.. 10 feet away

2) 2 video when the engine/exhaust is cold and 2 when the engine/exhaust is heated up

what i mean.. start you engine before u get the resonators installed.. do the video.. drive around for like.. 15 minutes. and make another video1

get the resonators installed.. go home.. next day make a video when you start your engine.. drive around and make another video..

THEN wait 3 months and make another video.. after that another 6 months and make another video :D

so we can see that they really worn out or not.

Ill try that out.

Are you looking to see if the Magnaflow resonators degrade over time?

yes.. i have magnaflow resonator and i think it worn out after a year... i got rasp a lot.. and even the exhaust sounds different.

when the system was new it had a weird noise.. like a back breathing noise. i know it sounds stupid but i cant explain.. but i dont have that noise anymore and i got more raso. So i think the resonators are degrade/ worn out after a while

i kept stock resonator and remove the cat with a 2nd resonator by Thrush at advance autos for 31 bucks. its about 2.25" inlet and 25" length with no rasp at all. pretty cheap and definitely gets the job done!

I will be purchasing a Strup header soon and was wondering, since I just have a Magnaflow catback, would a 22" resonator be enough? Also, where on the exhaust would this go? Does it replace the midpipe?

it does not replace the midpipe but it has to be welded on it.

22 is gonna be good. but you will never get rid off the rasp completely.
BUt it will be much better than nothing

2 resonators will clear the rasp PERIOD

ill post a clip soon and show you my set up and sound soon......

One more question: since I will have this welded on the stock midpipe, would I need the 2 1/4" outlet, or can I go with the 2 1/2" outlet?

i have a 2.25 (1/4) outlet and inlet on the thrush resonator and it is installed right next to my stock resonator, it should fit. the muffler shop guys will make it fit with the welding. if you go bigger on the outlet then they should add some custom pipping but it wouldnt look "clean". regardless they'll make it fit for its price.

nothing will eliminate rasp... it will reduce.

if you dont want rasp install your oem header back.. or get resonators and cat.

yes it matters. bigger and longer with a big head is good. At least that is what my gf told me :P

You want to use 2 resonators that equal the length of 30" - I have a 14" and a 16" - the 14" came stock on my exhaust and I added another one that I bought at the muffler shop. I would tell anybody to just go to a muffler shop and buy one there for $40 then have them put it on. Dont worry about the jazzy ones - bring it to a muffler shop that has been around for 20years and that the guys have been there since born ...ha. they will have the car done in 1/2hr

why 30?
what is the problem with two 16 or 18?

btw 16=14
and 14=12 because 1-1 inch at the two end is just the pipe....

why 30?
what is the problem with two 16 or 18?

btw 16=14
and 14=12 because 1-1 inch at the two end is just the pipe....

because ive read in the other 100 posts about resonators ...that two of them that equal around 30 is best ...and thats what i have on my car - so .......

its just doesnt make any sense... they can have two 18 without problem.

its just doesnt make any sense... they can have two 18 without problem.
get two of them and make sure they equal the total length of 28"+ thats all im saying

Size does matter!! Just got my resonators welded in and the length of the resonators had a lot to do with eliminating the rasp. I got an 18" Magnaflow and a 22" Magnaflow resonator. That's a total of 40" of resonator. Rasp is gone and the resonators didn't change the tone/ volume of the exhaust.

Here's my setup-

DME header > Magnaflow High Flow CAT > 18" Magnaflow resonator > 22" Magnaflow resonator > Tanabe Medallion Touring exhaust.

^ good job - im sure it sounds a lot better now

I hope if I add a downpipe it won't change the sound much.

it shouldn't change that much.. or maybe a little if you get rid of the high flow cat but i think the quality would still be the same

it shouldn't change that much.. or maybe a little if you get rid of the high flow cat but i think the quality would still be the same

yup

Adding a downpipe doesn't remove the second CAT does it? It replaces the section of exhaust between the header and the second CAT where the second o2 sensor is. Correct me if I am wrong.

Adding a downpipe doesn't remove the second CAT does it? It replaces the section of exhaust between the header and the second CAT where the second o2 sensor is. Correct me if I am wrong.

nope the first cat is on the header, the second is after the spipe (its on the midpipe) - the order goes:

header --> spipe --> midpipe --> exhaust

Looks like the downpipe is the final piece to the exhaust puzzle.

has anyone considered any power loss due to larger or mulitiple resinators?

There will be some power loss but it’s not much considering what you have gained from adding header/ exhaust. That’s not to say the gains from an exhaust are great but I can live with +/ - a couple horsepower. You may be not seeing the total benefit of having a full exhaust but at least your car doesn’t sound like a rice monster.

There will be some power loss but it’s not much considering what you have gained from adding header/ exhaust. That’s not to say the gains from an exhaust are great but I can live with +/ - a couple horsepower. You may be not seeing the total benefit of having a full exhaust but at least your car doesn’t sound like a rice monster.

and also you need to look at a dyno - more hp down low surely means more then the few extra hp on top

Come again?

if you look at the dyno graph of before and after ....for every install you do .... if you see that you have more hp through out the band .... it sure makes the car better to drive then if you only get a few extra hp on the top end

True, true. Haven't had my car on the dyno yet but from I noticed not much difference once resonators were in. I'm no high tech computer though. In fact I am actually able to drive my car now and not have to worry about the constant embarrassment that came farting out of my exhaust.

The key is drivability.

^thats a huge gain - i know what you mean - people hear my car and are like WOW - cause its real deep sounding - none on that ebay sound rice

Setup

Weapon R header w/Spipe/ Stock midpipe/ tsudo exhaust....


I got it installed sunday and I love the way it sounds when idle deep very throaty... now higher RPMS it sounds like a ____ed off bee.
Iwent to the muffler shop today to get an extra resonator installed on the midpipe but he said there is no room.

So how can some of you get multiple resonators installed with the stock midpipe?

What are suggestions. and links to websites so I can make some purchase about quieting my setup...

Its really annoying.

when i had the stock exhaust it was quiet... I guess thats the only solution.

Setup

Weapon R header w/Spipe/ Stock midpipe/ tsudo exhaust....


I got it installed sunday and I love the way it sounds when idle deep very throaty... now higher RPMS it sounds like a ____ed off bee.
Iwent to the muffler shop today to get an extra resonator installed on the midpipe but he said there is no room.

So how can some of you get multiple resonators installed with the stock midpipe?

What are suggestions. and links to websites so I can make some purchase about quieting my setup...

Its really annoying.

when i had the stock exhaust it was quiet... I guess thats the only solution.

well - i dont know if you have the money but redoing your midpipe at this time would be good for ya. It wont cost much for the midpipe. Just depends if you put a cat back on. The resonator should only be around $40-60 and labor isnt much for a good shop. I had my local muffler shop put my second resonator on within 45min total. I think my second resonator is only 12 or 14" - and my initial one was 18"

well - i dont know if you have the money but redoing your midpipe at this time would be good for ya. It wont cost much for the midpipe. Just depends if you put a cat back on. The resonator should only be around $40-60 and labor isnt much for a good shop. I had my local muffler shop put my second resonator on within 45min total. I think my second resonator is only 12 or 14" - and my initial one was 18"

OK so should i remove to old resonator or buy a new midpipe with the new resonator?

remove the old one and let the shop make a new piping with the resoantor

What I am wondering is what would it sound like if you added a muffler instead of a resonator? I found this...
HP-2 MUFFLER
http://www.hushpower.com/product/30/HP-2+Series+Muffler+-+304S.html
I am wondering if this would have more of an affect over the resonator?

I bought 2 vibrant resonators from NGAmotorsports and got an awesome price. I havent instlled them yet as i havent had time or time to put my header/s-pipe on yet. I will let you know the outcome when all is said and done. But if you want vibrant resonators PM NGAmotorsports!

I bought 2 vibrant resonators from NGAmotorsports and got an awesome price. I havent instlled them yet as i havent had time or time to put my header/s-pipe on yet. I will let you know the outcome when all is said and done. But if you want vibrant resonators PM NGAmotorsports!

any updates? i was thinking about getting vibrant myself. which vibrant's did you get? the regular or ultra-quiet?

did anyone lose any back pressure for have their resonators eat up most of the midpipe?

i have a 30 inch glass pack and it worked miracles... took down almost all of the rasp, and totally did away with that high pitched metal grinding sound

the only thing keeping me from getting glasspacked resonators is that they seem to burn out over time. well, from what i hear on these forums anyway. some of the people running 30" magnaflow resonators say it worked really well at first but over a year or so it lost its effectiveness and became louder.

i dont know about the cherrybomb but its true about the magnaflow resonator. after two years my exhaust is raspy as a honda. it was much better before.... get two aero!

is anyone running a big resonator like the vibrant ultra quiet or any other hotdog style resonator with a highflow cat? im just trying to see what all could fit on a custom midpipe.

sorry to bring this back from the dead.

I have the dezod n/a catback and want to get it a bit quieter ( i have a lot of old neighbors), I also have a cai. I have been looking at vibrant ultra quiet resonator or the aero ar25. Does anyone have any experiences with them? I have a unknown crappy 18' resonator and it seems like it is wearing out. I just googled some reviews on them

the dezod is 2.35 piping, do you guys think these two would fit it? http://vibrantperformance.com/catalog/product_info.php?cPath=1021_1033_1055&products_id=45
or
http://moesperformance.com/index.php?main_page=product_info&cPath=13_214_295&products_id=1682

other resonator review
http://scionlife.com/forums/showthread.php?t=185431&highlight=aero+resonator
http://www.rs25.com/forums/f5/t97269-resonators-mufflers-little-known-younger-brother.html

i have a 24" magnaflow and i just ordered my 14" aero

i will do a before after shoot.

i really wonder that after a while these resonators stop keeping the noise down so we need to buy them every other year or so. My exhaust farts like a honda.... ( it wasnt perfect before since i have header but it wasnt this bad)

I guess its a way of keeping us coming back to spend more money :/

a lot of people say the fiber glass burns out in the magnaflow resonators.

i used to have a cherry bomb mounted right before the outlet of my exhaust on my old car (was a v6) and it made the exhaust note so much smoother...I wonder if moving it further back from the header would help in quieting and eliminating rasp

i'm using an 18" glasspack resonator and have for a few months w/ very little rasp (unless i hit higher rpm's)