Louder/Deeper Exhaust

[Misterio]

I just got some exhaust put on my car; a ceramic coated Header (4-1), 2.5" pipe all the way, gutted catalatic converter, no resonator, and a cheap (AR racing or something like that) muffler i bought off of a friend for $40. I got it put on by a shop but i wasn't satisfied. my low end is not any good its making a weird noise past like 3000 rpm like metal is hitting on metal really fast. Noise is heard only when i accelerate fast. I can describe it as the way it sounded when i took my muffler off when it was stock. only a little better. can i add a muffler to make it deeper and add a little back pressure or what should i do. sorry for the newbie questions. thanks!

 

[DSMX1]

could be your downpipe but what the hell do i know.

 

[GSGoinFast]

I just got some exhaust put on my car; a ceramic coated Header (4-1), 2.5" pipe all the way, gutted catalatic converter, no resonator, and a cheap (AR racing or something like that) muffler i bought off of a friend for $40. I got it put on by a shop but i wasn't satisfied. my low end is not any good its making a weird noise past like 3000 rpm like metal is hitting on metal really fast. Noise is heard only when i accelerate fast. I can describe it as the way it sounded when i took my muffler off when it was stock. only a little better. can i add a muffler to make it deeper and add a little back pressure or what should i do. sorry for the newbie questions. thanks!

im confused... are you describing a mechanical problem or an exhaust sound problem? if you want it quieter, get a 2.5 inch resonator welded in to it.

if your talk about a mechanical noise, maybe a pipe isnt mounted on the rubber mounts right causeing the pipe to hit the frame. just guess tho

 

[BigRand]

I'm still confused about your question, however I think you might have some pices floating around by your gutted cat causing a clog in it. (could be way off), also with headers expect that louder sound, try accelerting really fast in like when your doing about 5-6grand in second, let off the accelerator, and see if its the same sound your hearing from the car. If it is, then I think your just not used to the headers.

I could be way off, from not understanding the question.

 

[ShadowWulf]

I think he's talking about the "Flight of the bumblebees" sount that comes from many exausts on 2gnt's over about 3500 RPM....

Swap your muffler for a Magnaflow, no resonator, and it should fix that. I Have a nice deep sound on mine with the 2.5" catback. The only time raspieness apparent is when the exaust is still warming up in the morning, after driving for about 10 minutes i can gut it to 5000 rpm's and still not get the bee effect.

Also, i understand you will loose a bit of low end running without a cat, due to the lack of back pressure. 2gnt's need jujst a bit of backpressure, while a turbo car doesnt. Grab yourself a highflow cat or toss some other mods to make up for the difference in power.

 

[bullettdsm]

I just got some exhaust put on my car; a ceramic coated Header (4-1), 2.5" pipe all the way, gutted catalatic converter, no resonator, and a cheap (AR racing or something like that) muffler i bought off of a friend for $40. I got it put on by a shop but i wasn't satisfied. my low end is not any good its making a weird noise past like 3000 rpm like metal is hitting on metal really fast. Noise is heard only when i accelerate fast. I can describe it as the way it sounded when i took my muffler off when it was stock. only a little better. can i add a muffler to make it deeper and add a little back pressure or what should i do. sorry for the newbie questions. thanks!

Tough to find out what the real question (or questions) is, but I will go with BigRand to block.

 

[GSGoinFast]

I think he's talking about the "Flight of the bumblebees" sount that comes from many exausts on 2gnt's over about 3500 RPM....

Swap your muffler for a Magnaflow, no resonator, and it should fix that. I Have a nice deep sound on mine with the 2.5" catback. The only time raspieness apparent is when the exaust is still warming up in the morning, after driving for about 10 minutes i can gut it to 5000 rpm's and still not get the bee effect.

Also, i understand you will loose a bit of low end running without a cat, due to the lack of back pressure. 2gnt's need jujst a bit of backpressure, while a turbo car doesnt. Grab yourself a highflow cat or toss some other mods to make up for the difference in power.

my magna flow muffler was the exact same way when i first got it. let it warm up and the bees go away. now, ever since i put the high flow cat on i could drive for 3 hours strait and its still got the bee sound. i ordered a new exaust. i think it has something to do with the many different pipe sizes in my cat back. so i ordered a new 2.5 inch N1 style and i hope to get rid of it.

 

[97eagletalonesi]

i think u know what u mean. it sounds good then when ya shift something rattels. mine was quit but still did it. when i removed the cat was louder. when i removed my cat i think my but dyno said some improvement.. your 4-1 header may be the loss of low end try a 4-2-1

 

[Misterio]

well as far as the header is concerned i don't have the money to just buy another header so im just stuck with the 4-1. but i guess i was wondering if i should just buy another muffler or add an inline muffler and place it underneath my car instead of at the end of the exhaust like most mufflers. the question was is the muffler making that nasty noise cuz it is a cheap muffler?




anybody know where i can get a loud/deep muffler preferably used? ebay preferred since its safer buying it there. thanks
p.s. my pipe is now 2.5"

Thanks

 

[TalonSpeed]

that noise u hear are exhaust pulses. An engine is nothing but a big air pump, it pumps air in and pumps it out. The air pumped out comes out through the exhaust ports in quick short burst. These burst merge in the merge collect of the header then travel to the muffler. The reason your car is making that raspy noise is because the pulses are hitting the muffler at a very high velocity. The resonator, cat, and muffler are supposed to slow down those pulses a littler and muffler their sound waves. NO CAT, NO RESONATOR, this leave the muffler doing all the work. Cheap mufflers have less sound deading material which lead to BBBBZZZZZ BBBZZZZ RASP.

Backpressure is bad. less back pressure is always good. 0 back pressure is best

 

[TalonSpeed]

Also, i understand you will loose a bit of low end running without a cat, due to the lack of back pressure. 2gnt's need jujst a bit of backpressure, while a turbo car doesnt. Grab yourself a highflow cat or toss some other mods to make up for the difference in power.

Backpressure is bad. Listen to the word. b-a-c-k-p-r-e-s-s-u-r-e. Then engine has to fight against backpressure, so how can this be good for an engine?

When people put testpipes on, their butt dyno tells them they lost lowend power, when in fact they havent. What happens is they have big gains in the topend and this tend to trick people into thinking they have lost power downlow.

backpressure is caused by too small of a pipe and can also be caused by too large of a pipe. Cats are the main source of backpressure

 

[fr33b1rth]

you want it quieter, get a 2.5 inch resonator welded in to it.

correction: get a glasspack welded into it

resonatiors only quiet the very high pitched, tinney noises, glasspacks quiet through the entire range of sound. i have had both on my car, and the glasspack sounds better, and it quieter

 

[GSGoinFast]

correction: get a glasspack welded into it

resonatiors only quiet the very high pitched, tinney noises, glasspacks quiet through the entire range of sound. i have had both on my car, and the glasspack sounds better, and it quieter

what do you think a glass pack is? a glass packed resonator perhaps??

 

[fr33b1rth]

what do you think a glass pack is? a glass packed resonator perhaps??

go to any exhaust shop, and they will tell you that there is a difference as the two. yes, you can use a glasspack as a resonator, but there is such a thing as just a plain ol' resonator. they are packed differently, and have different effects on the exhaust. a glasspack will quiet throught the entire sound frequiency, while the resonator will only get rid of the angry bumble-bee sound, and not quiet the exhaust much. On an N/T, the glasspack will sound much better, because it will give it a much deeper, more aggressive sound. Really, go to muffler man, i went through this less than 2 months ago

so pretty much, a glasspack is a glasspack, and a resonator is a resonator.

 

[na90dsm]

correction: get a glasspack welded into it

resonatiors only quiet the very high pitched, tinney noises, glasspacks quiet through the entire range of sound. i have had both on my car, and the glasspack sounds better, and it quieter

glasspacks will opnly get louder with time. my buddies uncle has em on his urc sprint car and they got so loud he had to take em off because he was over db ratings

i had glasspack sidepipes on my cj7 and they got so loud i couldnt drive it past 9pm or the cops would stop me. i had em on for abtou 3 weeks.

the stuff inside the glasspacks breaks down after heating up and cooling down and actually wears away.i didnt beleive it till i learned from experience.

 

[Misterio]

so will a better muffler help me sound better? how about those ebay N1 replica mufflers. do they sound good?

 

[na90dsm]

i just bought a n1 replica in silver carbon off ebay. it wotn be quiet. itll have a deep sound but its got a 4.25 tip and a 2.5 inlet. its a big muffler. then again im not lookign for quiet i just dotn want my exhaust to sound liek my old pacesetter dieing duck exhaust.

if you get a 3.5 or 4 inch tip and a relitively small muffler canister you shoudl be ok. try the fireball or racing medalion mufflers. they sound good. but the smaller cans may get raspy up top

 

[uh-oh]

well im running a ceramic 4-1 header and a 3" header back pipe to a Blitz NurSPec muffler on my supercharged 420a and that made the flight of the bumblebee go away

 

[fr33b1rth]

you could also get a flowmaster hushpower muffler installed, it sounds and acts just like a glasspack, but it guarenteed not to blow out...

 

[GSGoinFast]

well im running a ceramic 4-1 header and a 3" header back pipe to a Blitz NurSPec muffler on my supercharged 420a and that made the flight of the bumblebee go away

ummm.. did you say supercharged?

 

[rampridersrider]

ummm.. did you say supercharged?

Yes he has a supercharged 420a. Quite amazing I must say.

 

[GSGoinFast]

well im running a ceramic 4-1 header and a 3" header back pipe to a Blitz NurSPec muffler on my supercharged 420a and that made the flight of the bumblebee go away

pictures please? 3 forms of ID, reciepts, dyno runs, granmothers confirmation perhaps?? lets see it!

 

[rampridersrider]

pictures please? 3 forms of ID, reciepts, dyno runs, granmothers confirmation perhaps?? lets see it!

Go to the supercharged talon thread to read more about it.

 

[Misterio]

that still didn't answer my question, will those e-bay replica mufflers sound any good? like the N1? and no i don't want to be quiter i want to sound better than i do now, im already loud.

 

[na90dsm]

i didnt get mine on yet btu this is the one i got. ill let you know how it sounds. actually is a very nice uffler and i got it for $75 total



N1 style 2.5 inlet 4.25 tip. silver carbon

You must be logged in to view this image or video.

You must be logged in to view this image or video.