95_F150_5.slow

So, when I bought my truck it had a really badly done true dual straight pipe with no CAT. I just yesterday had a Magnaflow hi-flow CAT and a Flowmaster Super 44 (stainless steel) put on with 2.5" piping. It exits in front of the passenger rear tire with a rolled tip.
I had to have a CAT because there is emissions where I live.
The newly gained back pressure is awesome! But it is super quiet! Does exhaust flow get restricted when the CAT is not fully broken in?
I would appreciate any input.
I may just have to replace that muffler with a glasspack or something if not.

unit505

The cat should never flow better than when it's new. A flow master super 44 is a great muffler. How loud do you want it?

Crownman

Look at SLP exhaust. A buddy of mine had straight pipes with an SLP Loudmouth catback on his 88 mustang and when he got on it at the track it was earsplitting loud. Sounded like a nascar hitting the rev limiter, I had to use earplugs when I would help him stage. So with the inline cat you have an SLP should be quieter but still damn loud. Especially with the shorter pipes you have.

95_F150_5.slow

Unit505,
I don't really know, it's just not nearly as loud as I expected it to be. I've had this same muffler in the past and it was much louder. I think that I maybe should have used a 40 series, or a straight through like a Magnaflow.
Its almost like there's a silencer hehe.

Crownman,
I have heard of SLP too now that you mention it, from the same source, a friend who had fox bodies. I had forgot about them though. I may have to consider.

unit505

I have the 4.9 and with no muff, and its super quiet. The 5.0 is a different beast. Short of gutting the cats, which I don't recommend, I'm not sure of how much louder your going to get.

95_F150_5.slow

Yeah, I should have watched some Youtube videos of exhausts, I would have seen that the 44 and 40 flows don't sound how I'm used to on these trucks. It seems that a dynomax bullet would be the ticket to some more sound one my truck.

sportster07

Sounds like you want glasspacks and true duals. True duals with glasspacks will make your truck loud but still legal. I've ran the same setup on just about everything including my 97. Two magnaflow high flow cats and two random glasspack mufflers. I put in a crossover pipe (x-pipe) on my last set up and it was still very loud but seemed to gain a tiny bit of power with the addition of a crossover pipe.

95_F150_5.slow

Do you think that cherry bombs are decent glass packs? Like as good as any other?

Lightning LA

I've heard Cherry Bombs are pretty good....

Warlockk

Try a flared tip. It will increase volume and cost very little. Pipe diameter will increase sound (3" at the outlet). Run as few bends as possible. Running straight out of the muffler instead if turning out the side will make a big difference but will leave emissions editing under your bed. A more open intake and throttle body will make it louder and deeper ( thats why carbs sound louder) but you may loose performance and mpg and some mods may not be smog legal. You didn't mention headers which will help. Or you could get a mp3 of exhaust sound and play it on the stereo until your ears bleed.