Look before I answer about this, I want to explain something. I mean no disrespect to any of the members when I explain something like this. I said something about backpressure in another exhaust thread and 2000GT4.6 retaliated in bold, bold letters when contradicting me, trying to make me look stupid. I didnt appreciate that at all expecially considering he was wrong. I have no doubt that your car runs like a monster. What I am explaining is that, if you were to have mufflers in your setup, you would probably gain some torque in your setup. I dont know if you have had your car dynoed...But if you are truly curious, swap out your SLP's and put some mufflers in your exhaust and see what happens to your torque...i think you will be surprised...Again, no disrespect here, I explained why I kind of lashed out against a fellow member, but I am extremely condifent about the information I am posting about this, otherwise I would drop the argument

 

Back on topic.... lol..

Your car will be awfully loud. But as long as the sound is a good sound, is there really such thing as too loud?

Just as a warning, say good bye to quiet conversations around 2K and beyond. And IF you were able to sneak in before hand w/o waking up anyong, go ahead and forget about that as well.

 

+1 i thought my car was loud until i heard his
by the way how is fixing your heads going

 

Yeah I dont like SLP. Sorry guys but i dont believe on putting Chevy stuff on Fords. When i had my Chevy truck the best mod i ever did was motor craft plugs lol. I think that might be a little loud. Does anyone have Borla chambered mufflers?

 

All borla and magnaflow mufflers are straight through, the larger ones just have a lot more packing to quiet the sound further.

If you have lopy cams now and you switch to a straight through muffler you will be regretting it. Since chambered mufflers work by sound cancellation instead of sound deadening they have a much different sound with cams(and even without). Every cammed stang I've heard with straight throughs sounds loud and like crap.

As to the back pressure debate, the answer is kinda yes and no that you need it. Anyone that says back pressure is really using the wrong terminology and should be using exhaust velocity and restriction. You don't want any "back pressure," but you do want an appropriately sized exhaust for the right flow and velocity. Someone explained it one time as having two straws...one had a 1" opening and the other has a 4" opening that you can barely put your mouth around...Try and blow through both and see how much harder it is to get air flowing through the 4" than it is the 1".

 

It is the difference between turbulent and laminar flow. Changing the diameter of the pipes and what kind of restrictions you have in your exhaust ex. mufflers, cats, plays a role in how much turbulent flow you have in your exhaust. The goal is to try and get the least turbulent flow of air. Different combinations of exhuast systems can change how all this works. Mix and match. I suppose you could calculate it if you want.

 

well basically it depends on your Flux Capacitor set up and how many giga hertz you have