Savington,
Can you let us know how this system spools up compared to the FM II? What about the area under the curve differences? Erik |
Originally Posted by miatajunkie
(Post 894444)
Savington,
Can you let us know how this system spools up compared to the FM II? What about the area under the curve differences? Erik |
Originally Posted by Savington
(Post 895105)
Our expectations are significant low-end and high-end improvements with the EFR6258 vs. FM's 2560R. We will have some dyno comparison charts between the two turbos later this summer.
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Originally Posted by 0o heaven 0o
(Post 909583)
I haven't had time to read through the whole thread yet so sorry if this has already been answered but when would this kit be out? I'll probably end up picking one up when it comes out.
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We'll announce a release date and take pre-orders when we're a bit closer to completion. Before the end of the year for sure, hopefully quite a bit before.
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Originally Posted by Savington
(Post 909653)
We'll announce a release date and take pre-orders when we're a bit closer to completion. Before the end of the year for sure, hopefully quite a bit before.
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Pricing estimate in post 4 is still accurate today. https://www.miataturbo.net/prefabbed...34/#post872073
There's a fair amount of info in this thread, so if you're really interested, reading this thread from post 1 is a great way to get an idea of what we're planning to offer. |
Originally Posted by miatajunkie
(Post 894444)
Savington,
Can you let us know how this system spools up compared to the FM II? What about the area under the curve differences? Erik |
Originally Posted by k24madness
(Post 909755)
The GT25 turbine has to be the worst of the Garrett offerings. I bet is was designed on a commodore 64. The turbo Sav is putting together is in another league altogether. I would expect substantial gains on both ends of the RPM band.
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Originally Posted by albumleaf
(Post 909759)
You make it sound like incremental gains in turbo efficiency are a night and day difference.
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Originally Posted by soviet
(Post 909779)
Transient response is where it's really at.
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Originally Posted by albumleaf
(Post 909759)
You make it sound like incremental gains in turbo efficiency are a night and day difference.
Efficiency of the compressor wheel is not the issue. The turbine section is where that turbo falls far short. It's well documented. |
Originally Posted by Savington
(Post 909730)
Pricing estimate in post 4 is still accurate today. https://www.miataturbo.net/prefabbed...34/#post872073
There's a fair amount of info in this thread, so if you're really interested, reading this thread from post 1 is a great way to get an idea of what we're planning to offer. |
1 Attachment(s)
Originally Posted by Savington
(Post 909799)
Pretty much. The 6258 has wheels that are larger than a 2860RS, but it responds and drives like a 2554R and makes more torque down low than either of those turbos could even dream of.
https://www.miataturbo.net/attachmen...ine=1343739892 Red is the EFR 6258, blue is a GT2871R, both in .64 A/R. Source of data: BorgWarner EFR 6258 Turbo - Full-Race.com |
1 Attachment(s)
torque curves of my car (red) vs Garrett 2560 /w BEGI IM (blue) vs shuiend's old setup (green)
https://www.miataturbo.net/attachmen...ine=1343756657 |
Originally Posted by soviet
(Post 909955)
torque curves of my car (red) vs Garrett 2560 /w BEGI IM (blue) vs shuiend's old setup (green)
https://www.miataturbo.net/attachmen...ine=1343756657 |
Originally Posted by soviet
(Post 909955)
torque curves of my car (red) vs Garrett 2560 /w BEGI IM (blue) vs shuiend's old setup (green)
https://www.miataturbo.net/attachmen...ine=1343756657 |
I think they were running lower boost. I was at like 18-19psi up top and 15psi at 3500rpm.
Still, the point is that the curves do NOT intersect. I have more faster spool *AND* more power. My torque curve is like a hat for their torque curves. |
Originally Posted by soviet
(Post 909988)
I think they were running lower boost. I was at like 18-19psi up top and 15psi at 3500rpm.
Still, the point is that the curves do NOT intersect. I have more faster spool *AND* more power. My torque curve is like a hat for their torque curves. |
Originally Posted by shuiend
(Post 909990)
My turbo has been on at least 3 different cars for members on mt.net and along with however many 240 people used it before I got it without any turbine wheels falling off. :giggle:
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