Genpu_Mz3's ........ 2010 mazda 3

[Sivart444]

Well, i don't know how old the "little ones" are but if they are very little you should look here for inspiration

http://www.stanceiseverything.com/20...s-are-alright/

[Genpu_Mz3]

Well, i don't know how old the "little ones" are but if they are very little you should look here for inspiration

http://www.stanceiseverything.com/20...s-are-alright/

Yea. Ive seen those. They are so cool!

[FD22]

Much space. Looking forward to Spring errr..potentially lol

[Genpu_Mz3]

Allrighty. Going to pull the trigger on msds header today or tomorrow. Just wondering if i should get rid of the racepipe and toss in a highflow cat/put the stock cat back on or if ill be fine with the racepipe @Kiyomi @Hyperion

[Hyperion]

Well, if you get the headers, you will have no catalytic converters. So you will have to get a high flow cat, either from another source, or from corksport, which is what I did. You have to ask nicely from corksport so, as they do not sell that item usually.
Running just a race pipe & 2 resonators, if you are on a cork sport exhaust, is just stupid loud

[Hyperion]

I would also highly suggest buying two new o2 sensors from rock auto, it will save you the trouble of trying to take your stock ones out of your stock headers. Much worth it

[Genpu_Mz3]

Well, if you get the headers, you will have no catalytic converters. So you will have to get a high flow cat, either from another source, or from corksport, which is what I did. You have to ask nicely from corksport so, as they do not sell that item usually.
Running just a race pipe & 2 resonators, if you are on a cork sport exhaust, is just stupid loud

Yea. Thats what i was thinking. Would putting the stock cat back on be ok?

[Hyperion]

Why would you buy aftermarket performance parts, and then restrict it was a stock cat.

[Genpu_Mz3]

Just for the time being. Wondering if itll make a huge difference

[Kiyomi]

thats up to u. either way, your gonna have to relocate your second o2 sensor behind the secondary catalytic converter, and move the primary down to the lower bung on the msds header, that is the only way to fool our ecu. also it would be good if you got a new exhaust gasket, also up to you. other than that, its all bolt on. the hastle of making the bung for the o2 sensor in the stock catylitic converter, and buying an aftermarket part for flow, it might be worth your while to just get a high flow cat from cs first time round. the cars loudness will also go up x2.

ive also been doing alot of research as to the differences in length of piping in the header and intake. from what ive been told and read is that the longer the piping, the better the top end will be (moves the powerband upwards). from what i can see, the msds is not a shorty nor a long tube header, more like a mid length, so its good all around. from my datalogging, with the msds header and sri, the engine begins to starve for air after 6500 which makes some sense. theoretically, by adding more tubing in the header or intake, air flow velocity/exhaust scavenging should increase and will help in the higher rpms. will be doing some testing on intake piping length to see the differences in the coming months. just babbling on. yay your getting a header lolz.

[Genpu_Mz3]

Lol alright, thanks for your help @Kiyomi and @Hyperion looks like ill wait a bit till i can get a highflow cat aswell. Again, thanks very much ffor your input

[Genpu_Mz3]

thats up to u. either way, your gonna have to relocate your second o2 sensor behind the secondary catalytic converter, and move the primary down to the lower bung on the msds header, that is the only way to fool our ecu. also it would be good if you got a new exhaust gasket, also up to you. other than that, its all bolt on. the hastle of making the bung for the o2 sensor in the stock catylitic converter, and buying an aftermarket part for flow, it might be worth your while to just get a high flow cat from cs first time round. the cars loudness will also go up x2.

ive also been doing alot of research as to the differences in length of piping in the header and intake. from what ive been told and read is that the longer the piping, the better the top end will be (moves the powerband upwards). from what i can see, the msds is not a shorty nor a long tube header, more like a mid length, so its good all around. from my datalogging, with the msds header and sri, the engine begins to starve for air after 6500 which makes some sense. theoretically, by adding more tubing in the header or intake, air flow velocity/exhaust scavenging should increase and will help in the higher rpms. will be doing some testing on intake piping length to see the differences in the coming months. just babbling on. yay your getting a header lolz.

lol! im much more interested in your research and testing @Kiyomi then my own stuff haha! babble on my friend!

aaaaaaaaaaaaaand talked with cs and they wont sell me the cat separately, looks like ill be looking into a universal one, vibrant or something

[Genpu_Mz3]

@Kiyomi do you know if the stock cat mounting bracket will line up with the msds one? If so imma just gunna weld the mounting bracket from the stock cat onto a universal high flow cat

[Kiyomi]

it bolts right up to the high flow cat from cs. so hopefully that can give you a gauge of where it mounts up to.

[Genpu_Mz3]

Yea but i was wondering if the stock one is the same size mount. But now that i think about it i guess it would be lol

[Genpu_Mz3]

Ok another question lol. What size inlet should i get on the highflow cat? 2.5"? @Kiyomi @Hyperion

[Hyperion]

Kiyomi will have to answer that. Mines a 2.25" I believe

[Genpu_Mz3]

Ok. Thanks for the reply. The cs exhaust is right in the middle lol 2.36" guess i could go either way?

[Kiyomi]

what exactly are you asking? for mine, i got 2.5' piping welded to the high flow cat with a flange which connects directly to the msds flange.

[Genpu_Mz3]

I was asking what size inlet of the high flow cat i should get. I was thinking a 2.5" cat but wasnt sure if i had to match it with the size of the corksport exhaust. Or if i should get bigger so i can slide it over the cs exhaust and use the clamps instead of getting it welded.

[Hyperion]

What exhaust do you have

[Genpu_Mz3]

Corksport

[Genpu_Mz3]

Its 60mm (2.36") wide so im thinkin a 2.5" cat so itll slide over the cs side, allowing me to use the exhaust clamps.

Make sense? Kinda? Lol

[Kiyomi]

yeah that probably will work. ud need to use high temp exhaust sealant and the clamp, or welding is not the worst option either.

[Genpu_Mz3]

Alright. Thanks