When my car was turbo charged the exhaust was extremely quiet. I thought that would be the case with it being N/A now. I quickly found out that this was not true at all.

I am quickly on my way to pissing all my neighbors off and quickly on my way to riceville if I don't fix this quickly. I searched...came up with a lot of thread that I have been reading through. Though since I've never changed an exhaust around I'm a little unsure on some things. I don't know the difference between silencers and resonators. This is where I get confused.

Front to back, the car has a Hytech header with a 2.5" collector. It's the 2.0L version. Next is a small adapter that changes the exhaust from 2.5" to 3.0". Next is a 3" test pipe. Next it's all mandrel bent 3" piping. Next is the 3" Magnaflow turbo muffler.

The noise level is pretty unacceptable in my book. If performance is hindered slightly then so be it, but I'd like to have a conversation at highway speeds. That is the goal. I am also on a budget.

I had an exhaust leak also and am unsure if I fixed that. I really don't know what to listen for. Where the header mates with the adapter I'm using a doughnut gasket from a Honda S2000. But I don't know how the two pieces are supposed to seat together.

Any help would be so much appreciated.

 

well there's not many options, i personally think...

1: keep it below 3600 to 4000 rpm in the hood
2: keep the exh. mani and muffler but get your piping redone in all 2.5" piping, add the factory CAT and resignators of you still have them
3: see if Magnaflow makes a silencer for your exhaust (gay but help with the issue at hand)

the only real feasable option to me is #2 if it's that much of a problem to you

or 4: turbo it again

 

Thanks for the advice. Though, since I'm on a budget, changing the whole system out isn't really an option.

What I'm thinking may help the issue is:
1) Ditch the test pipe and replace it with a high flow cat
2) Where the exhaust makes the last 90 degree turn there is a area where I can install a 14" resonator before the exhaust bends again to go over the rear suspension.

From what I have read this should quiet it down quite a bit with minimal performance hinderance.

 

The cheapest option would obviously be the silencer. I have no personal experience but I'd imagine a power loss. Second would be to throw a cat in the mix. I run a resonated t/p and I couldn't imagine a straight pipe in there . Perhaps another resonator somewhere in the piping. It would get more expensive from there.

 

getting it repiped from mani to muffler SHOULD cost you under $250.00, call around your area for pricing

 

If you are now NA, 3 inch piping is overkill. As Neo mentioned in order to quiet it down and get that nice deep tone and not raspiness you need a larger/longer resonator on the B-pipe. The lack of a cat will also contribute to the raspiness "ricey" sound. A high-flow will definitely help get rid of the raspiness. I just bought a hatch with an AN-R header, 2.5" piping all the way back to a vibrant/es oval style muffler. It has some raspiness, and I just ordered a 22" Magnaflow 2.5" resonator to from Dave/SMS to replace the tiny one that's currently on the B-pipe. Talk to Dave/SMS he is really good. Again that 3" piping and muffler is overkill.. Good luck..

 

OR.. get a mugen TL and call it a day

so your pipe gets bigger .. 2.5 => 3 .. maybe that's why it's loud .. i cant really say anything about WHY it gets louder with same exh when u go from turbo to n/a but ..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr1244 &raquo;</TD></TR><TR><TD CLASS="quote">OR.. get a mugen TL and call it a day
</TD></TR></TABLE>

I don't have that kind of funds. It needs to be budget. I've been talking with a few friends from back home in Washington and I've definately got a better idea on what needs to take place.

I am unsure on what an effective length of a resonator should be. My exhaust is all stainless and Kteller sells one that is 14" long.

Also there are many people running 3" exhaust N/A with no problems. I'm at the point where I don't want to change anything unless I need to.

 

Call up John at Hytech and have him make you a cat back exhaust to match the header, with Renault cat included. That's if you are ok wih spending $900 for an exhaust though.This is what I have, and it's from me. It's not too loud and the sound is sweet, and I don't think it will have much effect on performance, my 2.1 seems to be doing fine with the 2.5" piping.

 

Like he said, he doesn't have the funds. Mugen TL is most over-priced underperforming muffler anyway. It's the lack of cat, small resonator, and large diameter piping that is making it loud and raspy. Resonator act as a "muffler" and will quiet it down.

 

3inch is probably too big..

get rid of the straight pipe and put a stock cat or catco cat. (you are going after sound, not performance)

get rid of the header.. put the stock one back on.

get a silencer.. and i have actually seen dyno charts with and without silencers, and there wasnt any difference between the two..

but im betting if you lower it down from 3" youll solve your problem

 

Definately keep the header, but get your hands on a 3" cat to replace the testpipe, and also that 14" resonator sounds like a good idea, it's 14" better than nothing

A silencer will kill power, no doubt about that, but it also kills a lot of noise, so it might be a good idea for daily driving.

 

carsound cat, magnaflow 14" stainless resonator...if you want to keep it all stainless from the catback. That will bring the dB down quite a bit and get rid of the rasp.

If that doesn't work then I would switch the muffler out for something that isn't a strait thru...you will lose a few HP but at least you won't be ricer city.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by abda53 &raquo;</TD></TR><TR><TD CLASS="quote">3inch is probably too big..

get rid of the straight pipe and put a stock cat or catco cat. (you are going after sound, not performance)

get rid of the header.. put the stock one back on.

get a silencer.. and i have actually seen dyno charts with and without silencers, and there wasnt any difference between the two..

but im betting if you lower it down from 3" youll solve your problem</TD></TR></TABLE>

My 3" is MUCH quieter than my 2.5". I used to have a JDM DC 4-1, test pipe, magnaflow pre-silencer, and a 5Zigen fireball. The whole thing was 2.5". I now have an AN-R hedaer with a 3" collector, no cat, no presilencer, and just the Thermal 3" turbo exhaust (only a muffler) and it is much quieter. It's still not quiet, but it is a very deep sound. I'm happy with it but I have knocked pictures and mirrors off of the walls in the house when I start it in the garage.

If you are looking for quiet, see if you can get a hytech TL muffler. Does your exhaust have a raspy tone to it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Pondus &raquo;</TD></TR><TR><TD CLASS="quote">Call up John at Hytech and have him make you a cat back exhaust to match the header, with Renault cat included. That's if you are ok wih spending $900 for an exhaust though.This is what I have, and it's from me. It's not too loud and the sound is sweet, and I don't think it will have much effect on performance, my 2.1 seems to be doing fine with the 2.5" piping.</TD></TR></TABLE>

The Hytech TL is super-quiet. I can vouch for that. You can ask John to put a Carsound cat on there for a little bit cheaper of a price but it's still gonna be expensive. It's a solution you may want to consider although not the most budget oriented solution.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bradstard &raquo;</TD></TR><TR><TD CLASS="quote">

My 3" is MUCH quieter than my 2.5". I used to have a JDM DC 4-1, test pipe, magnaflow pre-silencer, and a 5Zigen fireball. The whole thing was 2.5". I now have an AN-R hedaer with a 3" collector, no cat, no presilencer, and just the Thermal 3" turbo exhaust (only a muffler) and it is much quieter. It's still not quiet, but it is a very deep sound. I'm happy with it but I have knocked pictures and mirrors off of the walls in the house when I start it in the garage.

If you are looking for quiet, see if you can get a hytech TL muffler. Does your exhaust have a raspy tone to it?</TD></TR></TABLE>


wtf are you doing with a jdm dc header?

check your pm's, i need an addy to send this extra set of itb's to.....

 

Im sure you dont want to hear it, get a mugen twin loop. I have a mugen TL combined with an RMF header and custom test pipe, its a little quieter that stock! No ricy exhaust noises either.

 

[QUOTE=abda53]3inch is probably too big..


get rid of the header.. put the stock one back on.

Yeah, get rid of the hytech header, one of the best headers on the market.

He said he is on a budget so a MOOGEN TL is not an option. It's overpriced and doesn't perform anyway. I guess it's great because it's JDM..
I think you might want to try a longer resonator, at 18inch. Your best bet is talk to Dave/SMS..

 

Get a cat and a new B-pipe, something with a longer (perhaps better) resonator.

I hope the car is working well

-Marshall-

 

i was saying that for sound.. not performance.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">The noise level is pretty unacceptable in my book. If performance is hindered slightly then so be it, but I'd like to have a conversation at highway speeds. That is the goal. </TD></TR></TABLE>

 

Stock headers give the car a deeper sound. And your 3" is hurting your performance and making it louder.

The best sound i liked was stock headers, stock cat, stock piping, to an exhaust to take place of the stock muffler.

this gives a deep low sound.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sicteer69 &raquo;</TD></TR><TR><TD CLASS="quote">Stock headers give the car a deeper sound. And your 3" is hurting your performance and making it louder.

The best sound i liked was stock headers, stock cat, stock piping, to an exhaust to take place of the stock muffler.

this gives a deep low sound. </TD></TR></TABLE>

looks like someone like the sound of exhaust... not the performace.
style &gt; function

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sicteer69 &raquo;</TD></TR><TR><TD CLASS="quote"> And your 3" is hurting your performance and making it louder.
</TD></TR></TABLE>

Do you have any dyno charts to backup your claim? I have seen dyno charts proving otherwise that was on an 81mm motor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by abda53 &raquo;</TD></TR><TR><TD CLASS="quote">get rid of the header.. put the stock one back on.</TD></TR></TABLE>
Yeah OK, what planet are you from? He's got one of the best right now...

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00MRSi &raquo;</TD></TR><TR><TD CLASS="quote">If you are now NA, 3 inch piping is overkill. Again that 3" piping and muffler is overkill.. </TD></TR></TABLE>
Hrmmm... Some of these very high-strung motors Lik Brads and Brandon might actually need the 3inch piping. We won't know until they did a back to back dyno with the 2.5 vs 3.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr1244 &raquo;</TD></TR><TR><TD CLASS="quote">get a mugen TL and call it a day</TD></TR></TABLE>
WOW, that system was almost as restrictive as a stock setup. great advice... Not to mention he said small Budget
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by itr1244 &raquo;</TD></TR><TR><TD CLASS="quote">
i cant really say anything about WHY it gets louder with same exh when u go from turbo to n/a but .. </TD></TR></TABLE> Are you serious? Yikes!!!

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sicteer69 &raquo;</TD></TR><TR><TD CLASS="quote">Stock headers give the car a deeper sound. And your 3" is hurting your performance and making it louder.

The best sound i liked was stock headers, stock cat, stock piping, to an exhaust to take place of the stock muffler.

this gives a deep low sound. </TD></TR></TABLE> I'm just speachless!!!
__________________________________________________ __

*****...
cat.

Try a BCIII for DD

I say sell your cat-back and get a thermal, like Brad's. I could not get over how quiet it is over mine!

selling what you have for a used thermal, should not be much he difference out of pocket.



Modified by Bbasso at 5:55 PM 1/17/2006

 

I don't know what his mods are, but sounds like he had a turbo, and now he is back to stock or mild NA. Don't think he needs 3" piping unless he has some serious mods, even then, while NA 2.5" should be more than enough...