:confused: Hey do you know if a Borla 4.0 Cat Back will work on a 94 Mazda 3.0L? Does anyone know anyone that has done this mod? If it does work will you still get the same performance?

Welcome to the Mazda board, blue-pen. The Borla cat back system should work as long as it's for the same cab/bed configuration. Even the later systems use the same stuff for the 3.0's and 4.0's. You may have to make a hanger or two, depending on the years your swapping from. You shouldn't see any performance difference either.

I would go over to http://www.borla.com and search both vehicles.

Hey bro I appriciate everything! You wouldn't believe how hard it is sometimes to get advice. Do you know any good mods to do from your personal experience besides the borla exhaust. I started looking into JBA Header. Are they worth it or should I invest into a chip or other mod? :confused:

Headers are one of the best mods. Not the easiest thing to do, but worth it. A larger MAF and throttle body work well, better together than individually. And a good intake tube/filter replacement such as a K&N or KKM. Make the chip your last mod, as they need to calibrate it for your other mods. Most of the stuff you do to these works better as a cumulative effect, you won't see a lot of difference from any of them individually. To get the best recommendations, try the 3.0 board, they have a good bunch of folks on there that know their stuff. Just remember to stop back in here once and in a while and let us know what's going on.

Good luck with the truck, tell us something about it sometime and put up some pics when you get a chance.

Why are headers so effective in your opinion. What is that they do that gets such an increase in horse power. Also is Flowmaster better than Borla?

To increase the horsepower in a engine, you increase the airflow through it. The reason headers are effective is because they do this by scavenging the exhaust gases from the cylinders. Rather than the exhaust just getting pumped out by the compression stroke, headers work to extract the exhaust. The exhaust pulse from one cylinder creates a negative pressure wave that, as it passes the header collector, draws the exhaust from another cylinder. That's why they are more accurately called "tuned" headers. By scavenging the engine of burnt gases, it can more effectively fill the cylinders on the next intake stroke. Headers can also be tuned to operate more effectively at different rpm rangers. This is accomplished by varying both the length and diameter of the tubes to "tune" the scavenging effect to be more effective at different rpm ranges. Short tubes for higher horsepower, long tubes more torque. Smaller diameter tubes for torque, larger for horsepower. So there's a lot that can done with diameter and length to tune the engine.

As for Flowmaster vs Borla, Borla is probably a little better as it's sold as a system. Flowmaster gives you a muffler and you get the rest of it built. Of course you can get Borla mufflers too. It would be difficult to prove that one is actually better than the either, people usually like whatever they get.

Hey I was very impressed by your little article. It cleared up several questions I had about putting headers in. I am going to go with the Borla Cat-Back System. I got good and bad reviews from it. This guy here at work who is a janitor works at a muffler shop. He told me that Flowmaster made a better muffler altogether, but borla system was very good to. A friend of mine said that borla did good things to his cars and that it has a very good reputation. Its alittle hard to decied between the two, but I am going to go with Borla. I am going with JBA headers also. I want to put some kind of air intake system, but according to the way a 94 Mazda 3.0L air intake system is you don'nt have room for one. This one site suggested that if I put a 95 system on it that I good get stuff for it. What do you think Bro.

Thanks for the compliments on the article! First, Borla is like Flowmaster in that they make systems for a lot of different cars and trucks. Borla even makes motorcycle exhausts. So I'm not surprised that you would get varying responses when comparing the two systems. Second, since Flowmaster only sells mufflers and not entire systems, the results in each application would depend on how well the piping is done for the Flowmaster. Flowmaster makes a good muffler if you want to get the pipes done yourself. JBA is an excellent choice for headers, expensive but worth it.
On the air intake, for the 4.0 you can use a 95 intake tube then use a KKM or K&N filter on it. Even a 4.0 Aerostar tube works. On your 3.0, I'm not sure what you do. You have the same underhood layout as the Ranger, so I'd ask on the 3.0 board what can be done. You'd probably get a response within a few minutes as it's probably a common question.

:drunk: Well in your opinion do think that if I got some flowmaster I would get the same amount of horsepower? Cause I know this muffler shop by my house the said they would put two flow's with chrome tips on my truck for about the same price as the Borla cat-back system. The Borla only has one exit this would have two. So do you think that I would get the same from two 50's as I would from one Borla? Also wich would you go with? I am so close, but I am still debating. Oh the pic's will be here soon. I took some yesterday, but since I don't know **** about photography they came out kind of crapy. I am just a programmer not a photographer so maybe by Weds. I will have some good shots of the truck. Thanks again for all the help!!!:beer:

What you are probably getting would be a single in/dual out system. Not enough room to run two 50's under there and unless you do away with the cats, you only have one pipe anyway. I doubt you would tell any difference between the two, the sound may be different but opinions vary as to which sounds better. I like the 50 series because they are deeper and not as loud as the 40's. Probably about the same as the Borla. Check this thread, murrdog is getting a Flowmaster system for his for $240. That's quite a bit cheaper than you can get a Borla. Personally, if I could get a dual out system for the same price as a Borla, I would go with the Flowmaster. Are they running it out the back or out the side?

http://www.rangerforum.com/showthread.php?s=&threadid=6218

I made a mistake on the prices. The guy said it would be about $280 for a 50 series with one in and 2 out, but he would have to cut the cat off. I don't really like the idea of the cat being gone cause of the fact that its harder to get an inspection sticker with it gone. The Borla was priced at $372 with about $25 to install. The $280 is with tips and it rear exit. So do you think I should go with a 40 series instead if I decied to go with the Flowmaster? Or should I still go with Borla? Also should I have him cut the cat? Finally wich is the better deal my friend?

Never ever cut off the cat. First, it's illegal to do. Anybody caught doing it is subject to a $10,000 fine (Federal Law) so it's amazing the guy even offered. Second, you shouldn't have to remove the cat to put on a muffler. Plenty of room under there for a single muffer, either single or dual out.

I personally decided to do a 50 series just to keep it from being too loud. This is a very subjective thing, depends on the sound you're looking for. 40's get a little too loud for my taste, especially on longer cruises. I like the sound of the engine in my 01 as it is, just wanted a little more exhaust sound as well, plus the SOHC engines have the same size pipes as the OHV 4.0's had, even though they generate 47 more horsepower. Another reason I had for going with flowmaster is if I don't like the 50 series, I can always take it off and bolt on a 40. I couldn't have done that with the Borla. The good thing about the Borla is I could put it on in my back yard, and keep the original exhaust if I want to sell the truck later and reuse the system on something else, or sell it.

Still probably not an answer in there, but hope it helps some. I agonized over mine for 4 months before deciding. I went 2 1/4" in/out single exhaust. Hopefully within a couple weeks I'll have it on and find out if I made the right decision.

O.k. I appriciate the help my friend I really do. Hey that a cool pic you have under your name. I have gotten again mixed stuff over this exhaust contriversy. If I go with the Flows now I need to know a couple of things. Do I go with a 40 or 50 series? I just want a moderate sound not a loud one. Also do I go with a high performance cat? If I do can you suggest one. And do I go with stainless steel? Thanks again for your help.

If you're going for a mellow deeper tone, go with the 50 series. Unless you're doing more mods, you don't need a high flow cat unless the one you have is nearing replacement, say 80k miles, then you might as well upgrade. Stainless is great if you live in an area with lots of salt, otherwise a regular steel system will last you many years. On the flowmaster, they are only available in steel, but it is aluminized and heavy gauge.

Hey bro I finally found a flowmaster thats perfect for my truck. Its a new series that came out. I forgot the name I will write it later on tonight. Anywas now I need with the size of pipe?? Hows does it work? I read how if you go to big you lose back pressure. So could you suggest a size please.

Here is a pic of the truck still needs alot of mods done to it but it will do.

Hey guy, the pic didn't show. :)

On a single in/out muffler, 2 1/4" on both ends seems to work pretty well. If you go with a dual out, I'd stay with 2 1/4" in and 2" out.

:( :( :( :( :( I just called Flowmaster and they told me that if I went with a dual out on my V6 that I would loose to much back pressure and loose horse power. I am very disappointed by this news. Can you Help?:bawl:

On a 3.0 that may be true, but Kwikness had a dual Borla system on his and didn't think it affected it. There's no difference in going with a single large out and two smaller outs, you still maintain back pressure. If you look at your stock system, it's probably only 1 7/8" in some places. So if you really want duals, you could run 2" out and put a reducer ahead of the muffler to reduce the 2 1/4" inlet to a 2". Or go with a 2" inlet. Either way you would maintain the back pressure. How much you need, who knows? Flowmaster has a good reputation, I'm sure they know what they are talking about if they don't think you should run dual outlets of the size you were asking them about.

:beer: Well maybe your right. I could reduce the amout that goes out so that way I wouldn't loose back pressure. I am still lost now cause if I go dual I will loose power according to FlowMaster. I am trying to find some physics major that I can ask to see if he can figure out all this back pressure stuff. Anyways I am now starting to lean towards the Borla system again cause I want to increase power not so much loose it. Do you think if I went with a single in single out on a Flow that I would get the same as a Borla Cat Back system?:confused:

I wouldn't worry about it so much. People have used the Borla system with good results on both 3.0's and 4.0's. The restriction is going to be in the inlet to the muffler anyway, whatever size that is will control the back pressure in the system. If you went to say a 3" inlet, you would lose back pressure. As long as you stay with the same size inlet on a single out as you have a dual out, the back pressure would be almost exactly the same.

So if I use a single in dual out on Flow I will be ok as longs as the outlet isn't to big. I have idea to cut the loose of back presure. There is a delta series that flow has its a single in dual out thats is comeing in through a side not the center. So if I close of the exit right in front of the in alittle and leave the one on the alternating side alone. You think that would work?:confused:

I wouldn't even worry about doing that. The inlet size will determine how much back pressure you have. So if you go with 2 1/4" inlet, don't worry about restricting the outlet.

So you think I would be ok with a 2.0 in and 2.0 dual outs? You think I won't lose back presure? :afro:

Either 2" or 2 1/4" in with 2" out will work fine.