Hey everyone I am looking for a way to make my 03 a little less noisy. I figure adding a resonator would be a good place to start since right now I am only running a test pipe. Not sure whats the best solution for this. I am running Invidia manifold, 02 housing, down pipe, perrin midpipe and then a taipan xp catback. It sounds mean but since I leave for work at 5am I would like it if everyone around my house didn’t want to kill me.

 

Is it just the noise you're trying to adjust, or the tone as well? The resonator will definitely drop the noise level. Vibrant makes a pretty nice piece. If you need pricing, check out vividracing.com or pm me.

 

Look into Varex Electric Cutout Mufflers.

Closed:
With the cutout fully closed, air is diverted through the internal muffler passage and sounds as quite as stock, even with no catalytic converter or resonator in place! Adding a resonator would quite things down even more when closed and help keep any highway drone under control if you choose to keep the cutout fully open.

Open:
With the cutout fully open, the air goes directly through the center of the muffler with no obstruction. The tone was deep and not raspy at all. At high RPM and plenty of airflow, this thing screams!

Quoted from Dynotech Tuning.

 

I would suggest that you get a resonated test pipe and if it is still to loud them take the exhaust to a fab shop and have another resonator put in the mid pipe.

 

I have a greddy exhaust that was too loud, so I added a dynomax bullet muffler in the middle. It lowered the cabin noise dramatically.

 

Switching to a high flow cat from a test pipe will lower the noise level. The milspec hfc is a 100 cell cat and according to this, will only cost you 5 whp. http://highboostforum.com/forum/show...el-MilSpec-HFC.

Personally I would NEVER go straight piped on a daily driver...but so many people do and end up drawing unwanted attention.

Also, look into a quieter cat back exhaust, for example the Tanabe tuning medallion has a deep quiet tone until you get on it.

You should be fine with the o2 housing and exhaust manifold you have.

 

Thanks for the quick posts. I think the Varex would be very cool but i dont know if its that cool for 500 bucks lol. Just looking to lower the tone a little bit. Mostly during cold starts in the morning.

 

It isn't cheap but it does the best job of letting someone have their cake and eat it too IMO. If this is out of your price range, try finding the longest length resonator that you can (around 18" works really well).

http://youtu.be/Wg_8eKyc-8A

http://youtu.be/WUvLQt0RNBE?hd=1

-Jamie

 

cutouts are a great idea, but to me it's just another part to fail. i have yet to see one withstand the test of time.

 

Electric Exhaust cut out or resonators!!

 

BTW, here's the one I bought.
http://www.amazon.com/Dynomax-24219-...7370470&sr=8-1

 

@ steven. Did it lower the tone while the car was running. Like during start up and so on. I dont mind the cabin so much i just dont want to tick off any one around me.

 

My 80mm greddy had the resonators cut out by the previous owner. In my case, I'd guess it lowered the noise by more than 50% while cruising. Idle probably more like 20-25%. It was definitely worth the $65 installed.

 

Great info and thank you for the link.

 

Sound Performance boost activated cutout, plus stock catback is nice and quiet.

https://www.evolutionm.net/forums/ev...orite-mod.html