I just had a complete exhaust system done today.
Pacesetter armor coated header, Magnaflow 91036 cat, flowmaster 42583 "camaro style" muffler, dual exhaust with tips, all with 2.5'' pipe. It sound great at idle and under 2,000 rpm, but when you step on it its very raspy and echo souding. It really just sounds bad. I want to throw a resonator in there, and try and tone it down. What would be the best one to put in to kill that bee's in can sound?
You can hear the crap here, the camera makes it sound a little worse than it really is...
http://video.cardomain.com/Clip.aspx?key=C2173F3079198895
I love the way it looks, I just hate how bad it sounds.
I know vincent morris and a couple other people on the org have used cherrybomb as a resonator, and i know that the longer it is the quieter it is.
cherrybombs work wonders! I am running a 24" cherrybomb i believe, forgot the measurements of it.
Sounds great.
Weapon R 4-2-1 header, Magnaflow hi flow, The resonator, and a flowmaster 40 series. It sounds very nice, gives the growl when underload and in boost but pretty quiet while cruising.
Hey man just find a long cherrybomb glasspacked muffler.. thats what i did and it went from raspy loud todeep but my muffler is retarted.. any way.. anything above +24" and as long as you can have fit is best.
Magnaflow is a good brand of resonator to go with. It's louvers are punched outward from the inside of the tube, not the other way like Cherry Bomb or many others. This will give you more effective silencing & not inhibit to exhaust flow. Not to mention how it's idiot-proof to install, since there is no way you could have to louvers facing the wrong way relative to exhaust flow like with others.
Go beyond the "bolt-on".
Nickelin Dimer wrote:Magnaflow is a good brand of resonator to go with. It's louvers are punched outward from the inside of the tube, not the other way like Cherry Bomb or many others. This will give you more effective silencing & not inhibit to exhaust flow. Not to mention how it's idiot-proof to install, since there is no way you could have to louvers facing the wrong way relative to exhaust flow like with others.
the thrush is the same way, at about 1/3 the price (unless you want the stainless polished version).
JBO Stickers! Get yours today!
22" Magnaflow resonator FTW
I know I should be flamed for mention Pep Boy's, but they got cherry bombs for $20ish there.
Thanks guys. I need to do something soon, I got pulled over twice today because its to loud.
I may just remove the dual, and go back to a single exhaust, less hassle.
ok guys ..i know this has be brought up like..WAY too much but i personally have never asked
and i dont think this perticular question has been either.....anyway here goes....
which is the better DESIGN ?! im looking at the straight thru type,non louvred (performance first) .........the loooonnnngg round type...or the not so long oval type//..i already have a magnaflow oval muffler..which helped alot from what it was believe me...but i cant let it go like this.
my exhaust used to sound GREAT...but after my header install it has begun to sound like wet farts
and almost unbearably loud while accelerating......its not really the sound level as the wet fart thing that annoys me....i dont want my friends to be imbarassed when i pull up ya know
so before i randomly pick one......which will probably be magnaflow..which is best..im GUESSING you guys are gonna pick the longest round one i can get.....but id like to know why these are better than the oval shape..since dont the oval ones have more deadening material..thanks guys
It's not a matter of "Using this in place of the muffler you have", but one of "Use this with the muffler you have" with choosing & installing a resonator. And in case I misread your question, it's a matter of harmonics. As the exhaust's audio signal travels down the pipe to the muffler, it tends to resonate off the walls of the extension tube between the muffler & the catalytic converter, much like the sound of your exhaust resonates off the walls of an overpass or tunnel when you roll your pipes as you drive through, producing a high-pitched frequency "Tinny" sound that makes the exhaust sound like it does. Installing a header just compounded it. A resonator placed in-line helps quell it, allowing the merely the deeply toned sound of the pressure-waves of gases in tune with the pulses of the exhaust to exit the pipe, along with the inaudible harmonic signal of the exhaust that moves at super-sonic speeds that effects scavenging & power production (Re: Sonic Tuning).
Go beyond the "bolt-on".
yea..i dont wanna get rid of my muffler..i want something inline ..i currently dont have a cat..and the pipe is 2.5 " all the way back to the muffler and it used to sound GREAT nice and deep..loud but deep..and had a great lope at idle...but ever since the header install i lost most of the lope
and i gained alot of other annoying sounds ...the one perticular thats annoying me is what i can best describe as a plastic bag flapping in the wind...but its coming from my exhaust lol ..i know , its hard to explain..so lets just say it doesnt sound good hehe...so ive decided to get an inline res to go along with my muffler...just didnt know which design was better..the oval shape or the longer round ones.....i was under the impression that the oval ones had more material inside them but i now believe that the longer one would be just as good if not better.....and since i have no cat i have plenty of room for whichever one i want
I guess I should point-out that the arguement I started here is "Which way of making the louvers in the core tube of a glasspack or resonator be punched & arranged is best overall?". Some argue that punched inward with the trailing edge of the louver facing into the flow is the exhaust stream is best. Some believe it's the opposite. And some believe that the best way is for the louver to punched outward towards the packing for best flow & noise reduction. Fortunately I have some insight from Mr. Vizard on the subject.
A glasspack that has the louvers punched inward will have the greatest effect on noise reduction, but will have the least amount of flow due to the sawtooth effect the louvers have on the exhaust flow. If the louvers face the flow, the flow-rate drops. If they face away, it goes up. A simple look down the tube from either end should tell you which way the louvers face, if the exterior isn't marked as to which is the inlet. If it is, remember: Inlet leading, resistance increasing. Inlet trailing, resistance failing.
Now, a glasspack that has the louvers punched outward will have the highest flow-rate (Higher than found on the ones with the louvers punched inward), but the noise reduction won't be as high. The sad fact is that to achieve the same level of noise reduction as you would with an inward louver, you would need two or three outward style ones in one pipe. However, two or three "outies" combined will flow better than one "innie".
The choice is up to you, and I hope what you go decide upon works well. May you slip past the local enforcement at speed without notice or a clue to you being there. Later...
Go beyond the "bolt-on".
should the resonator go before the cat or after? should it go any where it fits?
there is no question about the louvers..i cant have any..performance first..going with a straight thru design either way..gonna use an inline res WITH my existing muffler....but let me make my question simpler ...
should i go with the oval design...
or the round design....
one has more material..the other is longer...
the 4" version is what you want...22x4" is perfect...
awsome..thats what i needed to hear , thanks
Philly D wrote:the 4" version is what you want...22x4" is perfect...
He is correct. I am running this same resonator, only with 2.25" inlet and outlets in combo with a 4X9" Magnaflow muffler, very decent sound. You should be pleased. Depending on how quiet you want it, you could even go with a longer resonator if you so choose.
As for the question about where the resonator goes - it normally is found after the cat...
well not made by magnaflow. I can't remember off hand who makes larger ones but there are options out there.
Someone here got really bold and installed a 40" Cherrybomb after the cat, once they puyshed the cat a lil' further forward. It don't hurt the catalytic's operation since it works best the closer to the engine it can be placed, for better "light-off" (Warm-up for a catalytic converter). I imagine Sec that since you haven't a catalytic converter on your car (If I read properly) you could easily fit a pair of 22" x 4" Magnaflow mufflers underneath your car between the header collector & the turn before the rear axle. As for those of you who feel a lil' bold & want to try something along the lines of this topic & install a unbelievably long resonator or glass-pack muffler (Like the full length of the car), but don't know where to get one from, I just read that CherryBomb will make one custom for you if you contact them (No joke!).
Go beyond the "bolt-on".
^^^ why not just put two in?
Riddle me this... riddle me that...
