I just put a flowmaster super 40 on my truck. Someone told me they have to "break in" for a while until they get more sound. Mine is kind of quiet and I was wondering how to make it louder?

 

high flow cat or gut the cat...my 40 got alot louder once i gutted the cat sounds really sweet now...

 

YUP! I totally agree with Bigschwerm. I ran no cats on my Stang GT with Super 40's and they sounded great not to mention freed up some power.

 

like quadro asked tho....yes they do need time to break in..my dad got a 40 series on his dodge and i have one on mine...and they took about 2-4 weeks before it gets louder. although im not sure why?!

 

Theres nothing to "break in" flowmaster is a chambered muffler not like magnaflow where its "packed" highflow cat would help or no cat size of pipes makes a difference and the tips do to..

 

I didn't notice any change in the tone on mine. The break in most people talk about is the time it takes for the paint and finger prints to burn off and the funny smell you get from that. It usually takes a day or too for that to happen.

 

what size pipes and tips do you guys recomend. I think mine are 2.25. is that two small? Which diameter of tips are you using?

 

I'm running a set of 3.5" chrome tips. I have to agree with the gentlemen earlier, I've ran nothning but Flowmaster's on all of the vehicles I've ever owned ( I'm 43yr old) and in all that time I've never had to "break in" a set. And like the guy stated earlier the only " break in" is the paint and smell burning and it will takea day to do that.

 

do the tips make a big differance in sound? what size outlet pipe do you have?

 

2.5" exhaust to a 3.5" tip. Certain tips can effect the sound somewhat such as the baffeled one that has this cheese grater design with fiberglass like packing to create a muffled like sound. The ones on my truck you can pick up at Autozone and they have a rumbling sound to them that compliments the Flomaster's.