Milzy Motorsports headers with PICTURES!

[stewartfn18]

not sure about tog's but s&s headers have a slight 180* bend on that clyinder. with yours do you have to remove the plastic piece on the fans? ill see if i can find a pic of my headers. im not sure if you would have any issues with copyright infringement or something since s&s is out of business. even if you made that primary similar the rest of the headers would be different

EDIT: i just noticed that you have a 3 piece design. with that theres really nothing you can do. the s&s is clearly a 2 piece and IMO a more PITA design
found one:

[MAC the KNIFE]

^ that's a darn good picture man. i'll use it when i mock up my rag tag set of ss headers.

[slw240sx]

another reason we designed ours the way we did was to make the front header also useable for the turbo header set. that way we can cut down on the number of fixtures we have to keep in inventory. Fixtures take up a good amount of space. As do the front cuts we use for mock up on every header we build.

[stewartfn18]

yea thats good. dont want too much overhead for something thats not gonna move quick, and good planning with being able to switch the crossover with one for a turbo. just sucks that you have to have the primary like that. im sure you dont lose that much flow

[trewyn15]

hey Mike, this is Mitch, just got your email and checked the thread out, they're looking good and when I start seeing some reviews, if all is good I will definitely grab these instead of the Pacesetters for sure, but I'm not sure when I'll be able to afford the headers.

One thing that I don't really understand is the downpipe deal. I thought with headers you don't need a downpipe? Is that different for these? Will I need a downpipe also to get the most out of them?

I was looking at the downpipe at Summit Racing just because I'm low on money and I'm sure the Summit Racing downpipe and yours are similar? Will the Summit Racing Downpipe work with these headers?

Thanks!

[AaronGTR]

Headers for these cars replaces "most" of the downpipe, but there is still a short section between the header outlet and the rest of the exhaust that needs to be modified or replaced in order to hook up to the headers. Usually consisting of the catalytic converter and a piece of flex pipe with a short 30 degree bend and a flange on either end.

With a nice set of headers like those, I highly recommend replacing the stock stuff and getting all 2.5" piping with a high flow cat. That will make the most of the flow improvement and power gain. You could even put an electric cut-out in front of the cat like I did.

[trewyn15]

Originally Posted by AaronGTR

Headers for these cars replaces "most" of the downpipe, but there is still a short section between the header outlet and the rest of the exhaust that needs to be modified or replaced in order to hook up to the headers. Usually consisting of the catalytic converter and a piece of flex pipe with a short 30 degree bend and a flange on either end.

With a nice set of headers like those, I highly recommend replacing the stock stuff and getting all 2.5" piping with a high flow cat. That will make the most of the flow improvement and power gain. You could even put an electric cut-out in front of the cat like I did.

so would a cheaper way maybe be going with a high flow cat and custom bent tubing from the end of the header?

[AaronGTR]

Originally Posted by trewyn15

so would a cheaper way maybe be going with a high flow cat and custom bent tubing from the end of the header?

uh, yeah.... that's pretty much what I just said. You can't use a pre-made down pipe because they are made to attach to the stock exhaust manifold way up by the engine. You'd have to cut most of it out and weld up something custom anyway to make it work. Cheaper and easier to just have a custom section made.



edit: mine looks like this. Flange to connect to the rear header, short leg with 30 degree bend, flex pipe section, electric cutout, high flow cat, flange to connect to the rear exhaust.

[trewyn15]

Originally Posted by AaronGTR

uh, yeah.... that's pretty much what I just said. You can't use a pre-made down pipe because they are made to attach to the stock exhaust manifold way up by the engine. You'd have to cut most of it out and weld up something custom anyway to make it work. Cheaper and easier to just have a custom section made.

sorry i didn't really understand , because the MMS downpipe is an option, so it confused me a bit, thinking it was the normal downpipe. thanks for clarifying it for me tho

can't wait to see what numbers these put out!

[AaronGTR]

Well, I know he makes a replacement DP for stock style exhaust also, but Mike may be offering a high flow DP section for use with the headers to attach to the rest of the exhaust as well. I'll let him chime in on that since I don't know what his plans are.

[trewyn15]

sounds good haha, I'd be interested in that also, It does show it available with the headers but being available on the website would be cool too

[MilzyZ34]

Originally Posted by trewyn15

so would a cheaper way maybe be going with a high flow cat and custom bent tubing from the end of the header?

Well we always try to think about the best way to design products to work with ones that already exist. It would be nice to use the stock downpipe location because then customers who bought our 2.5" ones could bolt it to the headers no problem. If this was the case though, the rear primaries would have to be significantly shorter to have everything merge together in time to enter the stock flange, and that's a compromise I'm not going to make. So what if we extend the location under the car, inline with the stock exhaust so the downpipe is just a straight section of pipe? well that would work except that extra 6" of pipe would make it much harder to install, negating any benefit from saving one bend. So what we decided to do was make a very affordable downpipe instead, and make it an option. It's the same quality of our $275 downpipes, we just eliminate one stainless bend, and we're already using 1/2 of a v-band set on the headers, so i can take the flange price off the downpipe and just add in the difference between one stainless half and one mild steel hald, and I also discount the price a little since the person buying it is already buying a set of headers. so in the end, you get a really nice downpipe made of high grade materials for $150, or you can opt not to get it, and we'll send you a mild steel v-band flange to make your own.

For those who don't know, this downpipe bolts directly to the stock catback flange or the catback flange of any direct fit aftermarket exhaust for the 99-05 grand am.

[unchained_01]

I ordered mine and getting another step closer to being more in debt LMAO and seeing if i can get 400 whp too

[trewyn15]

time to start working for this guy

[trewyn15]

is there anything new with these? has anyone gotten these installed or dynoed?

[roadie]

Originally Posted by MilzyZ34

Well we always try to think about the best way to design products to work with ones that already exist. It would be nice to use the stock downpipe location because then customers who bought our 2.5" ones could bolt it to the headers no problem. If this was the case though, the rear primaries would have to be significantly shorter to have everything merge together in time to enter the stock flange, and that's a compromise I'm not going to make. So what if we extend the location under the car, inline with the stock exhaust so the downpipe is just a straight section of pipe? well that would work except that extra 6" of pipe would make it much harder to install, negating any benefit from saving one bend. So what we decided to do was make a very affordable downpipe instead, and make it an option. It's the same quality of our $275 downpipes, we just eliminate one stainless bend, and we're already using 1/2 of a v-band set on the headers, so i can take the flange price off the downpipe and just add in the difference between one stainless half and one mild steel hald, and I also discount the price a little since the person buying it is already buying a set of headers. so in the end, you get a really nice downpipe made of high grade materials for $150, or you can opt not to get it, and we'll send you a mild steel v-band flange to make your own.

For those who don't know, this downpipe bolts directly to the stock catback flange or the catback flange of any direct fit aftermarket exhaust for the 99-05 grand am.

is there any flex pipe in your down pipe section?

and when you say it bolts directly to the stock catback flange, does that mean it is made to length if you do not have a cat installed? or is there a flange ahead of the cat? or you would have to cut and custom install your high flow cat option? or?

there is an opt for a cat. if not checked i would assume it would bolt to factory flange aft the cat.

[slw240sx]

yes there is a flex section in the down pipe. They are also meet at the stock cat back flange, the catted down pipe simply has a cat in place of straight pipe, they are both the same length.

[trewyn15]

would there be a possibility of a non stainless downpipe to keep costs down? since the headers aren't stainless?

[MAC the KNIFE]

if i was given the option of stainless, i would gladly pay the extra. and i live in florida where my car has never seen salt.
you live in wisconsin? ok...