View Poll Results: Would you get the BEGi S3 or FM2 system
BEGi S3
![](https://www.miataturbo.net/mt2011/images_td/polls/bar2-l.gif)
![](https://www.miataturbo.net/mt2011/images_td/polls/bar2.gif)
![](https://www.miataturbo.net/mt2011/images_td/polls/bar2-r.gif)
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29
31.52%
FM2
![](https://www.miataturbo.net/mt2011/images_td/polls/bar3-l.gif)
![](https://www.miataturbo.net/mt2011/images_td/polls/bar3.gif)
![](https://www.miataturbo.net/mt2011/images_td/polls/bar3-r.gif)
![](https://www.miataturbo.net/clear.gif)
63
68.48%
Voters: 92. You may not vote on this poll
BEGi S3 vs FM2
#44
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If that's Jes maggs (Paul's wife), then that's a 2554, begi "log", my downpipe & exhaust. That would be the only graph with a "log" manifold if you want to call BEGI's a log. It's big, it's heavy, but it's not wood.
Paul's machine and Artieparty were my centered/low mount manifold and exhaust, same as Hustlers minus the Vband/EWG glory.
saintfoo was my A/C P/S low mount manifold (like the above with just a little more offset to clear A/C P/S)
The last dyno posted is TurboTim's:
![](https://www.miataturbo.net/attachments/prefabbed-turbo-kits-3/58335-begi-s3-vs-fm2-dyno_day_vi-007.jpg?dateline=1351176867)
a true log.
![](https://www.miataturbo.net/attachments/prefabbed-turbo-kits-3/58335-begi-s3-vs-fm2-dyno_day_vi-007.jpg?dateline=1351176867)
a true log.
A better view:
![](https://www.miataturbo.net/attachments/prefabbed-turbo-kits-3/58336-begi-s3-vs-fm2-absurdflowbegi2.jpg?dateline=1351176867)
![](https://www.miataturbo.net/attachments/prefabbed-turbo-kits-3/58337-begi-s3-vs-fm2-absurdflowbegi4.jpg?dateline=1351176867)
Granted, my second did feel better but I don't have a dyno plot of it apparently. This was my favorite BP manifold with my 2560. This had no pipes pointed directly at another pipe, but the collector area is the same between each manifold.
![](https://www.miataturbo.net/attachments/prefabbed-turbo-kits-3/58338-begi-s3-vs-fm2-begireplver23.jpg?dateline=1351176867)
![](https://www.miataturbo.net/attachments/prefabbed-turbo-kits-3/58339-begi-s3-vs-fm2-begireplver220.jpg?dateline=1351176867)
ScottFW has a vband/EWG version of this.
![](http://www.absurdflow.com/miata/begireplacementver2/begireplver212.jpg)
btw, 18psi, the one that hit 310rwhp did not need 18-20psi--it needed 17.
To answer the OP, I would wait for Trackspeed's turbo kit.
#47
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And I think mine is the only one with a '94 block/head/intake (sorta). All the others had some sort of '99 head and some ran BEGI's old cast intake manifold with a 70mm TB...Paul's and Saintfoo's. Artie ran various versions of gutted OEM intakes or not so i don't know what his plot was done with.
#52
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but its well outside it's efficency range, e85 be damned.
it's all about the floooooooooooow.
look at the difference between 14psi and 17psi. 10hp, but gobs of midrange torque...the thing is tapppppped out.
unless you fit it in a .86 a/r housing, i dont see it happening; just a lot of hot air.
it's all about the floooooooooooow.
look at the difference between 14psi and 17psi. 10hp, but gobs of midrange torque...the thing is tapppppped out.
unless you fit it in a .86 a/r housing, i dont see it happening; just a lot of hot air.
#53
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lol yeah, I don't think you get how this works man: e85 doesn't magically add flow capacity to your turbo. Once its tapped out, its tapped out. You'll squeeze maybe a couple more hp by running insane timing, but once you're off the maps, you're pretty much done
Last edited by 18psi; 10-25-2012 at 12:51 PM.
#59
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You serious?
I have been tinkering with e85 for years now. Tuning subarus and evos, and a few miatas too (including my own).
I'm not even discussing its energy output with you, so I'm not denying or agreeing with that statement because frankly it has nothing to do with this.
I'm saying your turbo is TAPPED OUT at 300. This has nothing to do with e85 and everything to do with your turbo and setup. IF you still don't understand what me, brain, and savington are saying, I don't think there's even a point in arguing something so retarded.
if you had a well breathing exhaust, good manifold, and spiked the timing to kingdom come, you'd STILL fall short of a true 350whp on a 1.6 with a 2560.
You can call me an idiot, but I challenge you to prove us wrong.
PS: Sav has tuned more miatas than most of us put together. Ask him if you don't believe me.
I have been tinkering with e85 for years now. Tuning subarus and evos, and a few miatas too (including my own).
I'm not even discussing its energy output with you, so I'm not denying or agreeing with that statement because frankly it has nothing to do with this.
I'm saying your turbo is TAPPED OUT at 300. This has nothing to do with e85 and everything to do with your turbo and setup. IF you still don't understand what me, brain, and savington are saying, I don't think there's even a point in arguing something so retarded.
if you had a well breathing exhaust, good manifold, and spiked the timing to kingdom come, you'd STILL fall short of a true 350whp on a 1.6 with a 2560.
You can call me an idiot, but I challenge you to prove us wrong.
PS: Sav has tuned more miatas than most of us put together. Ask him if you don't believe me.
#60
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I do challenge you and will build it in the coming month or 2.
It doesnt matter what the turbo will make on one fuel if another fuel has a higher energy output. Flow maps are in airflow, not horsepower, and without knowing the efficiency of the cumbustion chamber (lol, rubbish) and the specific energy output of the fuel theres no way to convert flow to power which is what you are trying to do.
Dann
It doesnt matter what the turbo will make on one fuel if another fuel has a higher energy output. Flow maps are in airflow, not horsepower, and without knowing the efficiency of the cumbustion chamber (lol, rubbish) and the specific energy output of the fuel theres no way to convert flow to power which is what you are trying to do.
Dann