I have a 3" Alta exhaust with their header. Its does sound freeking awesome.. but i need to quiet it down a bit. (min 15db - 25 would be great).

I have been looking into resonators but was wondering if anyone had any suggestions on a resonator as I am sure most of you know about space restrictions?

Was looking here:
http://www.roadraceengineering.com/exhaustparts.htm

I called them on the phone and he suggested getting the longest resonator i can fit.. but possibly even changing out the 'muffler' to a Magnaflow. But that would change the sound. and i do like the sound.. i just want to quiet it it down some.

Thanks for any input on this.

 

You have one of the quietest exhausts already....soooo I dunno what to tell ya.

Don't change the muffler to a Magnaflow, it will be much louder than the Alta.

 

I think this should be moved into the 1st gen forums.... Your sig gave it away

 

Thumper, I beg to differ.. it is very loud with that header lol I think its running at about 106 db.

Sabes... DOH.. sorry about that..

 

Haha yea saw you have an R53 now....yes those can be loud

 

How are you measuring your db? PS are you sure you have a 3 inch exhaust? I know we sell a 3 inch for the R56 but not the R53.

 

OOPS nevermind. I see you bought this back in 08 when we did sell one. Found your post from 08 when you were asking the same question lol

https://www.northamericanmotoring.co...tback-wow.html

 

Correction on the db.. its 101 db.

Jarid.. do yo know how long of a resonator i should be able to use ? (height/width if u ahve that info as well)

Thumper.. yea.. its friggin loud.. but a sweet *** sound.

Fyi.. should have bought the 2.5 inch version lol

 

Pf.. you're probably **** outta luck. Do you still have your rear seat installed? Removing it sure opens up the exhaust concert in the back. You're going to have a hell of a time finding something big enough that will fit under the R56.

 

He has a 53...

 

Oh **** nevermind!

 

Like Thumper just said, don't switch to the Magnaflow resonator, my custom Exhaust depot full exhaust consists of 2 magnaflow resonators.

They were great at first but it didn't take long to burn out the fiberglass, now they're just too loud.

I just pulled one and installed a Dynamax muffler in the rear. It's much quieter (still would like it quieter) but at least it's not annoying.

Mark

 

So any suggestions on a resonator ?

 

I can't seem to find the specs on the 3" R53 exhaust. I would recommend going to a local exhaust shop and have them put your car on the lift and see what resonator they could fit up there. PS don't forget ANY resonator/muffler you put on your car WILL change how the exhaust sounds.

 

I am going to do some measurement on the exhaust this weekend. I will also try to find the install docs as well. as far as a resonator changing the sound that sucks. The sound of that ALTA header/catback is awesome! (just about 25db too loud) BUT MAN!! its a beast!!! I love it!

 

I mean you can try it but I think it will be too loud.

Tell you what....

About 30 seconds ago, I just got a new JCW stage I kit in for a friend. Since I'm buying his exhaust, I've got mine here.

Before I put the JCW kit on, I'm going to take out the resonator and try a larger one that I pulled from an Acura.

If you want, you're more than welcome to have the Magnaflow resonator and see if it works.

Lemme know.

Mark

 

That is a nice offer.... but if you think that me putting a resonator in line with my exhaust will be louder than it already is.. then i suppose its doing the opposite of what i need it to do?

 

Installing a resonator will not make your car louder. I would ONLY get a 3" inlet/outlet resonator as to keep the piping the same diameter and not to restrict flow.

 

Good thinking Jarid..

Mark... is that a 3" Resonator ?

 

No, I'm sorry... it's 2.5.

I agree with Jarid, I wouldn't drop a half inch... that's too much.

Sorry, wasn't using my entire brain.

Mark

 

Its ok Mark... I appreciate the offer very much.

 

On the bright side, if you try a larger 5" diameter resonator, it will quieten down the exhaust.

I installed a 5" resonator yesterday and it COMPLETELY quitened down my exhaust.

I took a stock one off an '08 Acura...

HTH's,

Mark

 

Can u provide the details on that resontator? Brand, dimensions (HxWxL) and where you got it from ?

Thanks for the tip!

EDIT: I know your said stock.. but.. do u know what kind it was ? or what may be comparable?

 

oh.. and no loss of power? How many db do u think it reduced it by ?

 

Nice looking Mini btw (in yoru sig) !