I go off the Internet because I've seen too many friends buy stuff off the Internet and not do proper research. If I'm going to spend 400 hard earned dollars I don't want to have to deal with a bad set of headers. Surely I can't be the only one who thinks this way

 

Your not the only one but depending on who you buy from returning a bad set for a great set will not be a problem. AM has very good customer service and will make things right. They sent my the wrong part once and fixed it before the end of the week, it was annoying to have to wait another week for my parts but no real harm done.

Matthew

 

Here is the latest video of my exhaust build, BBK shorty tuned headers + (auto) resonators + FRPP Xpipe + GT500 mufflers. She should have came like this from the factory!

 

did you just barely upload this? im trying to watch it but it keeps saying its unavailable lol

 

Took long to process, up and viewable.

 

2:40

My guess is the video doesn't do the sound justice, but seems to me like the only mod that really made a exhaust sound difference was the gt500 mufflers. Sounds very nice though

 

It definitely sounds good. But the only way to tell how much the headers made a difference in sound, would have been to install them last, not first.

 

My Before and After, Same camera and all the exhaust but the Headers are the same so you can hear the difference.
Before
After
And after Borla Touring A/B's were added

 

Good discussion guys and your stangs are sounding good. I had a chance to install the frpp x-pipe before I left town for work. Sounds great with my Magnaflow cat-back. Actually makes it a true cat-back now. The sound is only a little louder but deeper now. I can't wait to get back and install the headers then I will be done with the exhaust!

 

is it possible to get only the pipe section of a catback system? I already have axlebacks and was wondering if I ever wanted to change the rest, do I need to buy a whole new catback system or can I just get the other section

 

I know any decent exhaust shop shoukd be able to fabricate some piping which would be an improvement over stock but if you want the specific pipes that go with your axle-backs you would have to call around to see (maybe from american muscle?). I don't think you can tho.

 

AM doesn't have just the pipes; I already asked.

 

I wouldn't leave them stock though if your trying to get the best sound and performance (hp) out of your exhaust. My goal was to make it as free flowing as possible but staying legal at the same time. So in the end I will have Magnaflow street series cat-back, frpp x-pipe, stock cats (which flow pretty well from what I've been told) and shorty headers. The Cat-back is 2 1/2 in. piping and stock is 2.25. Below are pics of what I have now and a pic of the stock piping. In the last pic you can see the flat spots and dents in the piping. There weren't any in the Magnaflow or FRPP parts.

 

^This is the reason I will shell out the extra $300 for a cat back. The stock pipes have a lot of flaws in them. I wish I could buy the pipes separate but o'well.

 

I dont think those slights bends will make a difference. I was just under my car and noticed that the driver side has a slight press to it in a certain spot for a foot. The passenger side is round the whole length.
Sound wise, I can't speak for, im sure it would make a diffetence if you upgrade to a 2.5 but i believe these engines need that back pressure. I did change my mind on swapping out the rest of the piping.
When she blows, I will upgrade to a bigger diameter piping.

 

That might be true but at this point I cant run shorties as no one makes them legal in for Cali so I will take the $300 I was going to spend on shorties and just buy the full cat back. Equals the same price.

 

Wait up guys, turns out you CAN buy only the pipes! Search for Over Axle Pipes. So far I've found JPC, lethal performance, and borla. They all seem to be for GT's.. except the lethal performance pipe says its also for the V6 on their youtube video for the pipe. Im going to email them and make sure its accurate. they all cost about $350 though. and they're also 2.75' diameter

 

Only problem with that is 2.75'' is going to lose the back pressure needed for power. Anything over 2.5'' is to big (IMO) and would probably sound hollow. But keep looking, someone's got to make the piping for us.

Matthew

 

From what I have heard unless you are going F/I even replacing the OTA pipes can loose too much back pressure.
The 3.7 needs all it has to get it on the low end, with the pipes being computer designed I am sure that bend on the left OTA pipe has a reason for being there. You might gain some on the upper end but I think the low end loss would negate the upper end gain.

 

I have to disagree here, I think if you install a aftermarket system you won't loose to much back pressure. I certainly haven't. I have just as much low end now as I did when I was stock and I plan to pick up more with the headers!