aznxkicker

I recently installed a magnaflow muffler with no 2nd cat & resonator and it sound really loud and drones inside the cabin so I put back the 2nd cat and the sound level is acceptable. However I've noticed the muffler sound becomes quieter after driving for about a week. It used to have a nice growl sound when i start the engine but right now it just sounds abit louder than my previous OEM muffler. I wonder if this issue is normal and if a magnaflow glasspack muffler is a better combination than the 2nd cat placement or the high flow cat in terms of sound level, droning, backpressure..etc ? My car cannot fit a xpipe as I know this will refine the sound better. Thanks for the advice.

kevblah

I think it's typical for a muffler to change its sound within the first week, sort of like a break in period.

dynomite05

Yea, there's definitely a break in period. Although the sound should increase and get better, not diminish.

ark1tech

Yea same kinda thing happened with my Mustang a few years back. Can you share the info on the muffler, because I am looking for a Magnaflow for my car. Thanks

aznxkicker

i remember once i saw black smoke came out from the tips when i started my engine. Is it normal ?

dragon_27

i have a magnaflow exhaust on my suv and it after a few weeks, it actually got louder and there is more drone as well...

mikata

What engine size do you got? Was it you that had the 200K? Nice car btw.

aznxkicker

mine is 1800c.c inline 4 cylinder ..maybe thats the reason

mikata

I'm no expert but I don't think you'll get any deep growl from 4 cylinder engine. what do other fellas say?

Mosdef419

You wouldn't get the deep tone on a 4 Cylinder engine, more on V6 and definately on a 8 cyclinder V8 engine.

togaclk55

LOL @ reawakening this thread

Kevwood

Yeah, this was a dusty one.