my buddy has true duals and it's not that loud even, the days of wind shattering pipes are long gone. my truck is just as loud as your, that was my point, i have single exhaust as it is just as loud as your duals.

 

the roush exhaust sould similar to mine haveing no muffler. the tone isnt bad, i just want something that is louder. i dont realy want to have the exhaust dumped tho.

 

i also want to know if i do replace the cats with high flows, if i will get a CEL. also where do i find high flows? and part #s

 

You wont get a CEL as long as the rear O2s are mounted after the hi-flow cats, and as long as you go with Magnaflows part #94306, 94006, or 94106. Performance-Curve, Performance Peddler, and Summit Racing stocks them.

 

Its amazing how you can tell how loud something is in real life through a sound clip on the internet that you have a VOLUME control for. I hate to break it to you but with straight pipes true duals of the same size will be louder than a non true dual setup. With a muffler in the mix its the exact opposite, true duals are quieter because you have 2 mufflers instead of 1.

 

I can't remember the guys name on here, he has one of the off white trucks I think its an 07 or so. Anyway he had longtubes and highflows into bullets, I think his was probably the loudest setup I have heard of.

 

eitherway, run what you want, not everyone can run exhaust such as yours. true duals with mufflers won't be quieter than single exhaust with a muffler.

 

Oh my God do you just argue for the sake of arguing, please please please just tell me how you came to the conclusion that 1: not everyone can run the same setup I have and 2: how 2 mufflers doesn't make the same motor quieter than 1 muffler?

 

ok sweet. i think ill get some high flows put on. ill let u guys know how it goes. thanks 4 the help eveyone.

 

What about the horse power issue with straight pipes

 

1. in my state running an exhaust in front of the rear tire is illegal
2. 1 muffler on each pipe is the same loudness as 1 pipe and 1 muffler

 

So did they not sell f150s in your state in 1997 because they exited there from the factory, and I guess no one in your state owns a lightning. Also again on the 2vs1 your still very much wrong. Let me see if I can explain this to you, if you have 60 db's of exhaust note and you add a muffler that blocks 10 db you are left with 50 db's. If you have true duals (there a little louder as we cleared up earlier) and start off with 65 db's and add 2 mufflers that block 10 db you are now left with guess what 45'db's.

 

selling it factory and modifying it is 2 different things. do as you will, i'm not gonna ruin my rims from my pipes.

 

So your admitting your wrong about the 2vs1 thing or just ignoring it because you cant argue your point?
Also if you want to get technical your cant modify exhaust at all, under some bs federal law, also I have Zero black on my wheels and I don't think a little suet would "Ruin" any wheel ever.

 

ruin the rims was why ford relocated the tailpipe after '97. as the the muffler scenario, i don't care. you must be one of those guys who been everywhere and did it twice, and had 100 vehicles. i'm done