ok here. what i did with my truck was cut the cats because mine were in a single line, bought 2 highflow cats off ebay, went to a muffler shop, and had true duals put on. They charged me $240 for it, its loud, doesnt smell and I love it. true duals or go home *****

 

so u have no muffler but two high flow cats with two exiting pipes?? pretty much what i was askin bout in a earlier post... what if i just left the the 4 cats there or either cut two of them out (i dont want to have straight pipes) and run duals like that.. will it sound pretty good and loud??

 

why does everyone want loud exhaust?..after that its the megawatt stereo to counteract the exhaust..and after that you go deaf...i prefer peace and quiet when i drive...when i want noise then theres allways the dragstrip...take that from a drummer that knows LOUD!!! ...zap!

 

im goin to go with straight pipes but leave the cats on and dual it out the back... ill let youll know what it sounds like when i get it on this weekend!!

 

I am also looking at putting a dual or single system in mine soon. But I want something that isn't that loud at all, but really increases the airflow. Any suggestions? I had Gibson on my last truck, and it was the perfect sound. But I've heard if I'm going to leave the cats on this Ford, then the airflow probably won't get any better until I can take them off.

 

get some high flow cats with 40 series flowmaster

 

Let's see... you want to uncork the exhaust with "hi-flow" cats to get more flow ( which you won't without extensive engine HP increases, because healthy stock cats breath pretty well on a stock truck), then plug it back up with a Blowmaster.

Can you say oxymoron? As in using Blowmaster ( or any chambered muffler ) and high exhaust gas velocity in the same sentence.

Jeez... I just cannot believe this thread.

Use SEARCH, get educated.

Cheers

 

That's why I like the sound of the Dynomax Race-Magnum so much better than the Flowmasters. You look in one side of the muffler and you can see right out through the other side!

 

I have a 2004 5.4 with the stock cats and a 3 camber flow with single inlet and dual outlet sounds real good and deep but a little quite. if you want go with the 2 camber and cats, it will still be deep but louder. If you remove the cats it will put in a would of ntrouble codes and ****ty performance out of you motort.

 

??? oh no, heere we go again! There is more to life than trying to get people to turn their heads! If it's because of your loud exhaust, they are probably turning their heads to yell profanities at you! Why else would they turn their heads? Do all vehicles worth looking at tend to have loud obnoxious exhaust?

 

I was always under the impression that the cats provided a certain amount of back pressure that the motor had to have. Now I understand the faster that exhaust flows the more power you get. So by gutting the cats you would lose the back pressure the engine would need. For me I went with a Borla exhaust and love it. I was just looking for the V8 sound and a little growl when I jumped on it. Not to loud since I do a lot of highway travel and didn’t want to go deaf. I would never buy a blowmaster as so perfectly put in another post.

 

so what if i cut the muffler out and just left the cats on and run it dual out the back.. would i loose and hp or torque????

 

i put in highflows and ran true duals and didnt feel any loss of power anywhere. your fine cutting the muffler and running duals from there, but i would personally run true duals

 

well i just took my truck to the shop to get the exhaust put on.. i should get it back around 1 so ill let yall no what it sounds like..

 

what type of exhaust did you eng up deciding on? roll down the windows when you drive now mine are down usually all the time lol