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exhaust silencers - 6G Celicas Forums

Topic #43528 44 posts Started by lagos
lagos
#1
just wondering if any of you guys are using a universal silencer on a 3in tip muffler and what you would recommend?

im not looking to make my exhaust quieter, but i am looking to restrict the air flow a bit. i noticed that with my ebc totally off, my boost creep is crazy. it starts to hit 7psi and it stays there under 4k, but from 4-7k it starts to boost creep to 14psi. thats a lot of creep! im thinking that maybe i can create some backpressure with a silencer so that the WG has less exhaust flow to deal with. i figure the silencer is cheap enough to give it a shot. im also going to test my WG to make sure its not hitting the 3in DP i have.

so, post some silencer links guys and tell me what you use!
15PSI - 30MPG - Megasquirt Tuned
Kadett
#2
I know Apexi makes one for there N1 exhaust.
JDM Powerplant installed, BPU coming very soon!
shin
#3
dunno if it helps but i used to have a silencer on and when i took it out boost still the same.. no boost creep. might feel less restriction but not that less till it'll boost creep that much
Turbo install made possible thanks toTeamJ.D.M.officially 5SFTE junior member~*MuH NeW RiDe*~
lagos
#4
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QUOTE(shin @ Dec 3, 2006 - 4:08 PM) [snapback]507449[/snapback]
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dunno if it helps but i used to have a silencer on and when i took it out boost still the same.. no boost creep. might feel less restriction but not that less till it'll boost creep that much


what is your exhaust setup like? any cats? 3in from the turbo back?
15PSI - 30MPG - Megasquirt Tuned
shin
#5
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QUOTE(lagos @ Dec 3, 2006 - 9:09 PM) [snapback]507450[/snapback]
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QUOTE(shin @ Dec 3, 2006 - 4:08 PM) [snapback]507449[/snapback]
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dunno if it helps but i used to have a silencer on and when i took it out boost still the same.. no boost creep. might feel less restriction but not that less till it'll boost creep that much


what is your exhaust setup like? any cats? 3in from the turbo back?


stock DP, 2.5" pipe, crush bent, tanabe racing medallion muffler, no cat. yea.. crappy set up i know.. maybe that might be why i didn't boost creep.
Turbo install made possible thanks toTeamJ.D.M.officially 5SFTE junior member~*MuH NeW RiDe*~
lagos
#6
yep, thats exactly why you dont have creep issues. i didn't either when i was on my stockish exhaust. going to a full 3in, has its benefits for fast spool and making more power, but the lack of any backpressure makes boost creep into a big issue.
15PSI - 30MPG - Megasquirt Tuned
celiracer
#7
I bought a Reactive exhaust system for my g/f's eclipse a while ago came with a silencer tried it out and it vibrated and made raddle sounds. So i took it off and it sounds good. I don't know if a silencer would do the job or not, But i know it doesn't sound very good lol.
netrata
#9
I have that silencer but I took it off of my n1 style muffler. It rattles and gives the tone a hollow, buzzing sound (almost similar to a honda exhaust tone). I wouldn't recommend it.
lagos
#10
damn

well. i think a large part of it will have to do with the exhaust you have. an N1 "style" will sound different then a magnaflow would with a silencer. im going to try it, if it cures the boost creep, but sounds bad, i can aways try to somehow mount it inside of the exhaust, before the muffer. since im not trying to make the exhaust more quiet, just less free flowing. for 20bucks, it wont be the end of the world if it dosnt work out.
15PSI - 30MPG - Megasquirt Tuned
netrata
#11
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QUOTE(lagos @ Dec 3, 2006 - 8:12 PM) [snapback]507501[/snapback]
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damn

well. i think a large part of it will have to do with the exhaust you have. an N1 "style" will sound different then a magnaflow would with a silencer. im going to try it, if it cures the boost creep, but sounds bad, i can aways try to somehow mount it inside of the exhaust, before the muffer. since im not trying to make the exhaust more quiet, just less free flowing. for 20bucks, it wont be the end of the world if it dosnt work out.


Your going to need the bolt and nut that holds the silencer in place so it doesn't come off. The silencer doesn't come with one, just giving you a heads up smile.gif
jgreening
#12
How about fixing the creeping problem rather than restricting your exhaust? Why even invest in a free flowing exhaust if you are just going to cork it up? Sounds silly.
QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback]i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this.
lagos
#13
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QUOTE(jgreening @ Dec 3, 2006 - 10:49 PM) [snapback]507531[/snapback]
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How about fixing the creeping problem rather than restricting your exhaust? Why even invest in a free flowing exhaust if you are just going to cork it up? Sounds silly.



its a way to add in a cheap fix and to test if the exhaust flow is the cause of the problem. if i knew this exhaust was going to creep so badly, i probably would have done something differently, but its too late for that. the only real way to fix it would be to add in an external gate, and im not about to do that on the ct26.
15PSI - 30MPG - Megasquirt Tuned
Punisher
#14
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QUOTE(lagos @ Dec 3, 2006 - 10:57 PM) [snapback]507534[/snapback]
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the only real way to fix it would be to add in an external gate, and im not about to do that on the ct26.


Right because an external wastegate on a ct26 is just a silly idea and whoever thought of an external wastegate setup on a turbo with an internal wastegate must be a real moron because obviously turbos with internal gates won't work with external gates because the quantum leap fizzoromator device won't properly adjustumalate properly and then you'll end up with a craspy modular clamp that will totally blow your **** to pieces.

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I should note that if you do an external wastegate setup that once you put another turbo on you'll have to just throw the entire wastegate setup out because it is somehow COMPLETELY depending on what turbo you are running. /n00bness

This post has been edited by Punisher: Dec 3, 2006 - 11:57 PM
87 4runner DLX 22re, 5spd, 4.30gr, 4" lift, 30" tires, HID w/ Projectors, 6spkr + sub, custom exhaust, 94 celica leather seats, SR5 gauge cluster and clinometer. Future engine swap... possibly a 2jzge.
lagos
#15
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QUOTE(Punisher @ Dec 3, 2006 - 11:56 PM) [snapback]507551[/snapback]
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QUOTE(lagos @ Dec 3, 2006 - 10:57 PM) [snapback]507534[/snapback]
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the only real way to fix it would be to add in an external gate, and im not about to do that on the ct26.


Right because an external wastegate on a ct26 is just a silly idea and whoever thought of an external wastegate setup on a turbo with an internal wastegate must be a real moron because obviously turbos with internal gates won't work with external gates because the quantum leap fizzoromator device won't properly adjustumalate properly and then you'll end up with a craspy modular clamp that will totally blow your **** to pieces.

----------------------------------------------------------------------------------------------
I should note that if you do an external wastegate setup that once you put another turbo on you'll have to just throw the entire wastegate setup out because it is somehow COMPLETELY depending on what turbo you are running. /n00bness



no, what i meant was, that im not going to spend the time and money trying to convert a ct26 to an external gate. if im going to go through the trouble of removing the ct26, and buying a gate, and setting everything up, then im sure as hell going to want to upgrade the turbo at that time too. so the external gate will have to wait till then.

for now, i just want a band aid fix. something to tie me over for the winter. im tired of seeing my boost creep up to 17psi in this cold weather.
15PSI - 30MPG - Megasquirt Tuned
Batman722
#16
Art, if you want a band-aid for the winter, why not just put the stock dp on. That should slow the flow a bit wink.gif
my st205 swapandour Beams swap
lagos
#17
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QUOTE(Batman722 @ Dec 4, 2006 - 12:54 AM) [snapback]507565[/snapback]
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Art, if you want a band-aid for the winter, why not just put the stock dp on. That should slow the flow a bit wink.gif



easy 5min band aid fixes get tried 1st ! biggrin.gif
15PSI - 30MPG - Megasquirt Tuned
Hanyo
#18
keep us posted.... I always look forward to your post.

presure2
#19
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QUOTE(Punisher @ Dec 3, 2006 - 11:56 PM) [snapback]507551[/snapback]
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QUOTE(lagos @ Dec 3, 2006 - 10:57 PM) [snapback]507534[/snapback]
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the only real way to fix it would be to add in an external gate, and im not about to do that on the ct26.


Right because an external wastegate on a ct26 is just a silly idea and whoever thought of an external wastegate setup on a turbo with an internal wastegate must be a real moron because obviously turbos with internal gates won't work with external gates because the quantum leap fizzoromator device won't properly adjustumalate properly and then you'll end up with a craspy modular clamp that will totally blow your **** to pieces.

----------------------------------------------------------------------------------------------
I should note that if you do an external wastegate setup that once you put another turbo on you'll have to just throw the entire wastegate setup out because it is somehow COMPLETELY depending on what turbo you are running. /n00bness

keep this crap up and your gone.
we dont need your usless crap around here man.
you were banned from c-tech for a reason,...looks like your shooting for the same goal here.
trust me, it wont take as long here.
Former Team 5SFTE pro member ;)13.6@108MPH, 5SFTE Powered
Punisher
#20
Art.. why do you continue to think that an external wastegate has anything to do with the turbo itself?

87 4runner DLX 22re, 5spd, 4.30gr, 4" lift, 30" tires, HID w/ Projectors, 6spkr + sub, custom exhaust, 94 celica leather seats, SR5 gauge cluster and clinometer. Future engine swap... possibly a 2jzge.
x_itchy_b_x
#21
could you just turn the boost down for the winter?
if it spikes it wont be spiking at a high psi.
thats my band aid suggestion.

for fixing the problem id play with the boost controller first.
The bleeding hole might be clogged with oil or gunk.
if thats clogged you will be more susceptible to creep.
the thing i don't understand is, id run the ct26 with only a foot long dp and never experienced creep.


This post has been edited by x_itchy_b_x: Dec 4, 2006 - 10:50 AM
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brianforster
#22
punisher i agree with manny you seem to be a tad bit trollish in your posts like you have to make sure everything you say is delivered with some controversy.

anyways what he means by not wanting to do an external wastegate for his ct26 is that the labor and money involved would be wasted if he ever chose to do a different turbo upgrade. it would be like buying new tires for your stock rims when you know that you want to buy rims in the near future. or like how i havent replaced my shocks yet because im waiting to have enough money to do springs with it.
lagos
#23
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QUOTE(x_itchy_b_x @ Dec 4, 2006 - 10:46 AM) [snapback]507638[/snapback]
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could you just turn the boost down for the winter?
if it spikes it wont be spiking at a high psi.
thats my band aid suggestion.

for fixing the problem id play with the boost controller first.
The bleeding hole might be clogged with oil or gunk.
if thats clogged you will be more susceptible to creep.
the thing i don't understand is, id run the ct26 with only a foot long dp and never experienced creep.



ive been playing around with the ebc for a while now. the problem is, that if i turn it down all the way, im stuck at only about 7psi for those daily 3-5k runs. however if i go wot, ill creep to 14psi. i think this cold weather is making the problem worse. ill also have to inspect my downpipe. im willing to bet the wg is hitting the downpipe, like it has for so many other people out there.
15PSI - 30MPG - Megasquirt Tuned
lagos
#24
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QUOTE(Punisher @ Dec 4, 2006 - 9:55 AM) [snapback]507629[/snapback]
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Art.. why do you continue to think that an external wastegate has anything to do with the turbo itself?



no need to be a cocky know it all. if you have some advice to share, do it in a polite manner, and not try to talk down to everyone like your gods gift to cars or something. didnt you put your wastegate on backwards? biggrin.gif

the wastegate is a part of the turbo. the ct26 has its own internal gate. i would have to get an adaptor to sit between my manifold and turbo, then buy a waste gate, and then redo my downpiple (no i dont want to dump). thats all time and money that wont make me go any faster. if im going to go through all that trouble, then i ll just wait untill i have the cash to upgrade the turbo as well. besides that, its cold as balls out and we dont all have moms heated garage to work in.

This post has been edited by lagos: Dec 4, 2006 - 1:50 PM
15PSI - 30MPG - Megasquirt Tuned
WannabeGT4
#25
Hey Arthur. Did you fix your creeping problem?
Project ST204.5 99.88946% complete...
lagos
#26
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QUOTE(WannabeGT4 @ Jan 7, 2007 - 12:37 AM) [snapback]515774[/snapback]
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Hey Arthur. Did you fix your creeping problem?



not really. i bought a silencer as a band aid fix, but it didn't fit my exhaust. so, for now, ive just been trying to keep my eye on the boost. when it gets warmer out, im going to take my downpipe off and make sure the flapper isn't hitting it.
15PSI - 30MPG - Megasquirt Tuned
Insanity-74
#27
Why dont you just fit a restrictor plate between the downpipe and the exhaust......a 2mm`ish thick ice of metal, cut to the same dimensions as the flange, with a between 2.25 - 2.75 inch hole in it...2.5 inch usually cures the problem...very popular with st205 owners with boost creep issues.

This post has been edited by Insanity-74: Jan 7, 2007 - 8:41 AM
lagos
#28
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QUOTE(Insanity-74 @ Jan 7, 2007 - 8:40 AM) [snapback]515834[/snapback]
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Why dont you just fit a restrictor plate between the downpipe and the exhaust......a 2mm`ish thick ice of metal, cut to the same dimensions as the flange, with a between 2.25 - 2.75 inch hole in it...2.5 inch usually cures the problem...very popular with st205 owners with boost creep issues.



thats a great idea! do you have any pics of ones people have made?
15PSI - 30MPG - Megasquirt Tuned
jgreening
#29
This whole approach to me seem very ill-advised. We open up our exhausts to access additional horsepower. Then, if there is a boost creep issue, we restrict the exhaust?

Why spend several hundred dollars on the performance exhaust in the first place?

Creeping boost is NOT an automatic problem with a free flowing exhaust on a ct-26 equipped car. In fact, I could get the gt28rs (with a similarly sized wastegate but much more flow) to hold at 11psi on a full 3" exhaust equipped car.

Something is wrong. My recommend is to diagnose the problem and then repair it.
QUOTE(lagos @ Jul 10, 2006 - 1:55 PM) [snapback]454118[/snapback]i know your trying to do the right thing for your motor, but this is one of those times where you should just trust the guys who have had their swaps for a while and have done a ton of research into this.
Insanity-74
#30
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QUOTE(jgreening @ Jan 7, 2007 - 5:36 PM) [snapback]515855[/snapback]
>
This whole approach to me seem very ill-advised. We open up our exhausts to access additional horsepower. Then, if there is a boost creep issue, we restrict the exhaust?

Why spend several hundred dollars on the performance exhaust in the first place?

Creeping boost is NOT an automatic problem with a free flowing exhaust on a ct-26 equipped car. In fact, I could get the gt28rs (with a similarly sized wastegate but much more flow) to hold at 11psi on a full 3" exhaust equipped car.

Something is wrong. My recommend is to diagnose the problem and then repair it.


The problem of the boost creep IS caused by the exhaust being too free flowing and the wastegate on the CT series Turbo not being big enough to cope with the extra exhaust gases produced by modified cars and wider exhaust systems. Nothing is wrong with you car, the turbo wastegate is the problem....it can be ported, ie make the twin port of the CT turbo into one big port....that should cure the boost creep issues, but you have to be handy with a grinding stone and VERY sure of what you where doing......gt28rs turbos have a better more free flowing waste gate design, thus dont suffer the boost creep issues of the CT range.

a 3sgte engine running any ct turbo dose not need a 3" exhaust at all. 2.75" is more than enough.

Unfortunately I have no pictures of a restrictor plate, but you could very easily fabricate one....kind of like an exhaust gasket with a smaller hole in the middle.

This post has been edited by Insanity-74: Jan 7, 2007 - 1:21 PM
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