Muffler

**mojako** · September 30th, 2003 03:46 AM

will changing the stock resonator to a free flowing resonator improve power? May freemuff freeflow muffler ba na hindi maingay?

**Karding** · September 30th, 2003 03:53 AM

resonator is part of some muffler, as far as I know, and it's the baffled type (OEM).

SILENCER is another part to quite your muffler.
Apex'i Silencer

Straight-thru Design:

"Straight through design" mufflers are the most common import mufflers today. straight thru muffler are "glass-pack" (a fiberglass sheet wrapped around perforated tubing).
This will cause a relatively low suppression life. Carbon will attach to the only exposed side of the fiberglass mat and create a sound reflective surface instead of a sound absorbing surface. Also, most of them do not use any stainless steel wool to protect the fiberglass from burning off, which makes the exhaust louder. These types of muffler will result in a short muffler life.

Baffled/Chambered Type (Most OEM)

Most of the OEM muffler and Aftermarket mufflers for normally aspirated vehicles (non-turbo) use baffle type systems. This construction uses baffle plates to bounce the exhaust noise around inside the muffler to suppress the sound. This is a very effective way of suppressing the sound but at a high engine speed, the baffle plates becomes restrictor. The restrictor will cause high exhaust pressure and it will be difficult to gain peak power. Also, some of the baffle plates are not very resilent so it can start to rattle and produce an unpleasant exhaust sound.

Inner Silencer Type (i.e. some Apex'i muffler)

Some aftermarket mufflers today have insufficient sound suppression so they include an inner silencer. Most of these silencer have inside diameter of 35mm ~ 45mm (1.6 ~ 1.75in). This becomes a restrictor and it can cause a 5 ~ 7% power loss. Almost same as stock! It really defeats the purpose of installing a performance exhaust system. Also by having the additional silencer will increase the cost of the system. This is the reason why we do not offer these type of mufflers.

Now, look at GReddy exhaust, a very nice piece similar to Prodrive design.

I hope this enlighten some of you...

**Karding** · September 30th, 2003 04:59 AM

eto sample ng Prodrive Axle-back ko. First ignition start is the OEM then almost halfway ng clip naman yung sample ng Prodrive.
Boxer engine throaty sound when WOT but real quite on idle.

http://www.sharemation.com/nosro/sto...ve_exhaust.mp3

some say it sounds like a 3cyl motorcycle :bwahaha: and most people say it sound scary when WOT, the rumbling sound....

a Nissan 350Z got punked by WRX :hihihi:

**Karding** · September 30th, 2003 05:07 AM

Car Parking-Japanese AWD Style

**jevy0712** · October 2nd, 2003 12:15 AM

dude ung mga nabibili ba na muffler na di well know muffler and headers shop e nakakabawas b ng power or horsepower?
magkano b aabutin pagnapkabit ako ng full exhaust system sa fremuff?
hope you will help me with this problem.
tnx...

peace!!!!!!!!!!!!!!!

**Karding** · October 2nd, 2003 12:36 AM

jevy0712, depende sa construction and material used. At the end of the day, it all comes down to how much you're willing to spend to get a quality one.