FooFighters92

iTrader: (2)

Was considering removing my flowmaster muffler, catalytic converter, and just have straight pipes going out. Any thoughts? Engine is a stock 305. Wondering if anyone has experience and knows how that sounds compared to the aftermarket flowmaster. Better or worse? Thanks guys

I was told by a friend that the car would sound better with straight pipes...I was skeptical so I'm asking the people who know best haha

Edwardgp

You can go on u-tube and listen to different sound clips of third-gens with different exhausts and make up your mind.

Guest

Strait pipe on that or any thirdgen --->WILL<--- sound like crap at anything above -hot- idle...

NowhereFast

The car will sound like garbage with straight pipes. Keep your muffler.

3rdgenmaro

iTrader: (9)

It will be loud but have no tone to it. Sounding good > loud

DeathStarr89

iTrader: (1)

Agreed with the rest, my 89 Camaro had a 327 when i bought it with longtubes and straightpipes. Sounded like a farm truck.


On my old 91 RS we swapped a bad cat out with a glasspack and made a Y pipe at the back to eliminate the muffler. Bone stock 305 TBI and it actually sounded pretty good. That may be something to try.

Thirdgen89GTA

iTrader: (5)

It will also make slightly less power in most cases. There was a mag that did a dyno test on like 20 different mufflers along with straight pipes. The straight pipes were loudest and actually made the LEAST power.

Why? Muffler also acts as a expansion chamber, it reflects exhaust pulses back up the pipes and actually helps to increase cylinder pressures when tuned correctly. There's a whole bunch of science behind this theory.

FooFighters92

iTrader: (2)

I found a few, but it was so loud and the video quality was ***** I couldn't really get an idea of what it sounded like. (good/bad)

Anyways, thanks for the feedback guys. I will definitely be keeping my flowmaster.

Thirdgen89GTA

iTrader: (5)

low compression, small cammed small block with straight pipes = ugly noise.

ninetyone

iTrader: (2)

you will lose torque and it will not sound that great

Camaro-Drew

Mufflers also cause a scavenging effect

91BirdGTA

I ended up leaving the cat and the stock piping and just cut the muffler off. I know that each is to their own on this one, but I don't mind the sound. It is a lot deeper, will admit that it sounds a bit like a truck, but still throaty. Quite reasonable levels until you get passed 2500 RPM, then it will really start to roar. I honestly have not noticed any power loss and have still managed to get 31 MPG on a trip from Wisconsin to Arizona running premium.