Just figured I would post up for anyone looking to up their performance and really have a great sound, so hear is what I’ve done to mine in the end to get the sound that I wanted through a lot of trial and error, this may help anyone get it right the first time, so to start mine is a 2003 premium thunderbird, so I took the advice on here and 1st put in the c
old air intake K&N Typhoon, then I got the
SCT live wire tuner which is
part number 5051p which is the one that works on the thunderbird,
MODERATOR NOTE: The 7015 - X4 Performance Tuner tuner works as well- http://amzn.to/2g8tPMp
then I bought the
Borla 140081 touring exhaust cat back, but like most I had the same issue just wasn’t enough so from there I had my custom
muffler shop take out the factory resonators, then drove around and I was like ok this sounds great but still not enough sound, so then I asked my
muffler guys what else I could do and they stated that high flow cata would help so I shopped around for the best price which was 460 plus tax and got the magna flow direct fit high flow cats, after those were installed it really woke up the exhaust sound and still have that awesome
Borla tone which I’m a big fan off. Lastly I wanted a little more so I had the mid cat removed this is the one that’s underneath the car and had stainless pipes and crossover section made. And that did it, the car sounds great it’s a lot louder but not over bearing,still have that great
Borla tone through the
mufflers and it’s not annoying loud and sounds like a leaking exhaust, it has a nice growl and feet deep tone. So if your looking for a great sound I would first do the
cold air intake K&N typhoon, then get the magna flow high flow cats if you go to the magna flow website they have a direct fit system even though I’m only using 2 of the three cats it was still cheaper than buying each one separate. Then use the
Borla cat back exhaust 140081 part number, but with this shop around cause all you really need are the
Borla mufflers (for extra sound talk to your
muffler shop and use a custom
muffler shop ) they can put the
Borla Ataks on it and that is pretty loud really depends on how much sound you want, for me I stuck with the
Borla touring
mufflers. The full
Borla touring car back system will run you between 800 to as high as almost 1400, I
bought mine from amazon and paid less than 900 with taxes and shipping, but since I’m only using the two
mufflers, you could save more money by just having the
mufflers installed and I had them remove the factory resonators. Lastly I also took out the main cat the one that is underneath the car, but to do that you will need the
SCT tuner which gives you the option to turn off rear 02 sensor or you can try a non fouler to screw the 02 sensor in if you don’t have the
SCT tuner but the non Foulers don’t always work and will sometimes still throw a code. Also please check your local laws and talk to a honest trust worthy mechanic before doing what I have done so you don’t have any trouble, all in all I have made my exhaust pretty loud when you get on it but even with all of these changes it’s still not over bearing and annoying loud it just sounds good, since I did all of mine by trial and error it cost me a lot more money than if I knew what I was wanting the first go around, could have saved a lot. So 1st
K&N cold air then high flow MagnaFlow cats and don’t have the mid car underneath installed them from there have the resonators taken out then lastly put on the
Borla mufflers the stainless steel pair will run you about 450 installed and around 580 for the cats. And labor and extra stainless pipe should run you about 300 to 400 for
parts and labor maybe less depending on the shop. This is what I’ve done to mine and only posting this cause I wish I would have known this from the start could have saved me a nice nice chunk of change instead of buying all the stuff and in the end not using it all, but I got lucky and sold all the extra stuff and recovered most of the extra money I spent on the
parts I did not need, I apologize this is rambling on message me for any questions if my post does it make sense on what I did. Thanks and happy driving