I figured this would be the answer I got but from where i'm looking the ms2 is twice the price and if the ms1 would work for my goals why not? What are some negatives about the ms1? Id rather go with that but if you can give me some good reasons why I should go with ms2 over ms1 other than its newer and better (specifics) then maybe ill save up an extra week and get the ms2

MegaSquirt-II Programmable EFI System PCB3.0 - Kit w/ BLACK CASE DIYAutoTune.com

The MS2 is $70 more. Not 'twice the price'.

Oh damn I saw this one for $425 DIYPNP Nippon Denso 76pin Unassembled Kit DIYAutoTune.com

Whats the difference here?

That's a DIYPNP you linked to. The first one you linked to was the regular MS1, not an MS1-based DIYPNP.

The DIYPNP is MS2 based though. You assemble it and plug it in, and you are good to go. With the MS1 or MS2 kits that you and I linked first, I assume you will need to figure out how to wire it into you harness yourself.

But you might want to ask Braineack or Joe Perez or someone else who actually knows and isn't just guessing.

Thats what I was guessing since the only difference in the 2 ms2 systems that we linked were one was says its the 76 pin connector and the other i'm guessing you have to splice onto the factory wiring harness. I cant imagine that would be the only thing that makes a $200+ difference

stop being so n00b.

:brain:

I read a thread a month or 2 ago that compared the godspeed/ebay exhaust flange with the garrett exhaust flange. They looked very similar but were completely different, and someone had put up the exact specs of the garrett flange. I can't seem to find that thread now, and when I images.google searched garrett 5 bolt exhaust flange, i was getting mixed results showing 2 different types of 5 bolt exhaust flanges. Can anyone find this thread comparing the 2? I've searched and searched and can't find it. Or if someone could tell me right off hand whether this is the garrett flange or the "godspeed" flange that doesnt match anything but this specific turbo..
https://www.miataturbo.net/attachmen...ine=1365468437

I compared em way long ago. Don't think I have the picture any longer. Its REALLY close, and no way you'd tell from just a pic of the back of the turbo which of them it is.

Whoever drilled that turbo in the above post must have been really drunk though

I know right! That's so disappointing, but comparing the real flange and the godspeed one looks like they might be inverted. As if the 2 holes in the top right in my picture would be on the bottom right on the other one. I'm assuming mine is that "fake" flange needing a custom downpipe which sucks because I was planning on getting a stock sr20det elbow and making a pipe from there to the cat or do a cat delete

So if these don't work, would I be able to switch out the turbine housing with a Garrett or something? I know a little about turbo's and everything, but this little details that you learn with experience are new to me. Also, this thing looks way too tiny to be a .86 AR, i can't imagine it being any smaller.

EDIT: I'm trying to teach myself as I go along. I still have a few more parts to get before I can begin the install. Right now I'm trying to measure the turbine A/R, because from what I've read, things are never consistent in the land of china. From what I understand it's the area of the exhaust inlet divided by the radius from the center of the turbine wheel to the center of the exhaust inlet. If i'm correct in measuring this, and if it is measured in mm, im getting area: 50mm x 38mm=1900 / Radius: 50mm = 38mm Does that mean it's A/R 38? What am I doing wrong here?

This is a Garrett housing on ebay for $223
https://www.miataturbo.net/attachmen...ine=1365479793
This is a garrett housing that I found, among many, on google images
http://i1303.photobucket.com/albums/...ps99a2bad3.jpg
Compared to my china housing
https://www.miataturbo.net/attachmen...ine=1365479793

Im so confused about this, and I don't want to order the wrong flange to get my downpipe made. Am I just going to have to trial and error this?

To me it looks like they use a jig, first they drill out the bolt by ur thumb and tap it, put a bolt there and tighten it to hold the jig and then drill away however they didnt tightened it well enough and it moved as to why all the others are turned around it in a clockwise motion (the same way the drill turns).

Long story short, the flange should still fit.

I don't even know where I would get a flange for this. I found this
https://www.miataturbo.net/attachmen...ine=1365483458
This was on the old thread comparing the standard 5 bolt with godspeed 5 bolt, that I remember. When I starting measuring I was already getting numbers that were off. It's late right now so I didn't get too far into it, as I have work in the morning, but I guess it gives me something to sleep on. Maybe I'll just sell this one and get a used garrett t25 for like $100. That way I wont have to worry about this bs

To me it looks like the standard flange garret turbos use but as i said the jig turned while they were drilling the 2nd hole. All the holes should still match up.

https://www.miataturbo.net/attachmen...ine=1365483977

Garrett Downpipe Flange Divorced Ports 2 25" and 1 5" 1 2" Thich CNC Machined | eBay

Garrett GT25 GT28R GT28RS T25 T28 Exit Flange to 2" Downpipe | eBay

Thanks. My buddy that I'm going to have build my downpipe says he orders his flanges from mandrel-bends.com

GT28 Turbo Outlet Flange, 5 Bolt, 1/2", Mild Steel Columbia River Mandrel Bending

And what's the deal with stainless vs. mild? Mild seems like a better all around material to go with besides heat and ugly, but i don't care if it's ugly as long as its functional and not broken.

I'd ask them for a blueprint of their cut. Theres 2 types of 5 bolt t28 flanges.

Someone was drunk the day they drilled your turbo, i suspect you'll never find a flange that will work without drilling your own holes.

I see this. I may order a flange just to see if it will fit, like triple88a said, it may fit, just be offset a lot. If it does fit, but it's offset I wonder if it would cause an exhaust leak. I read mixed opinions about using gaskets at the exhaust side of the turbo, so is it yes use a gasket, or no don't use a gasket. I figure in my case, IF I can find a flange that fits, I would have to use a gasket to avoid an exhaust leak