Mufflers?

permalink · Jul 24th, 2003, 10:42 AM

What exactly is the purpose for the giant mufflers on these types of cars. I was at the shop getting an alignment and I happened to notice an import on the lift getting new tires. I walk over and look underneath. Had to have been a 5" muffler with a 3-3.5" exit. The input side of the muffler, maybe, MAYBE 1.25". The whole exhaust from the manifold back was 1.25", Maybe. What is the point of these mufflers?

zeno · Jul 24th, 2003, 11:05 AM

The tip is nothing but cosmetic. I agree I think the giant tips are kind of obxious. The actual pipe leading up the muffler and the piping in the muffler is what's important. Of course, I have a GReddy exhaust and it isn't exactly the smallest.

permalink · Jul 24th, 2003, 11:09 AM

I can understand a full cat back exhaust but just a tip? Why waste the money?

zeno · Jul 24th, 2003, 11:12 AM

That is why just a tip is complete rice. My favorite is the Civic DX w/ nothing but a ghetto tip on the OEM muffler.

James · Jul 24th, 2003, 11:13 AM

it's because they are stupid and what you would call 'rice'... I have a magnaflow 2.5" muffler... and 2.5" exhaust from the turbo back... it's a neccesity for me!

Shift1.6 · Jul 24th, 2003, 11:18 AM

Yeah the tip is only for sound and show. The most important on a exhaust is the size of the piping.

permalink · Aug 2nd, 2003, 09:51 PM

If you don't do a cat back, no tip will give you anything but looks and sound. Seems like a waste of time and money...

landon42390 · Oct 9th, 2006, 08:38 AM

where do you guys get your cat backs?

sweet3rdgen · Oct 9th, 2006, 12:35 PM

Why only cat back? Go manifolds back. If you are going to do the exhaust to improve breathing, then do the exhaust, the whole exhaust.

landon42390 · Oct 10th, 2006, 04:15 PM

cant afford the whole exaust at the moment but will soon!

RedHead7 · Oct 11th, 2006, 04:57 PM

The header is not a necessity. A cat back will give you better performance, if you dont have enough money just go for a cat back. the exhaust does not stay in the header long enough to make that big of a hp increase, so if you cant afford it dont sweat it.

Dan9 · Oct 11th, 2006, 07:09 PM

h the exhaust does not stay in the header long enough,,,,is exactly why it does boost HP. In my experience on a a sentra header boosted mid and high-end the most, where the stock exhaust manifold would be flowing its maximum and getting red-hot (100MPH), the header just wants to let the car go even faster and never gets red-hot.

The speed of the exhaust gas flowing is what makes an exhaust perform better. Stock exhaust slows it down and restricts it to keep it quiet.

D