Garrett vs EFR at DIYAutotune discussion
06-17-2014, 01:01 PM
#42
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There's no level of impropriety in the plots; I don't sell turbos or have an agenda. If you feel like an EFR is a good choice for you, go for it. In this test, the EFR lost power, both on the actual and butt dynos. The car's owner is registered on this forum and he'll post up if he feels like it.
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06-17-2014, 01:12 PM
#44
Your comments make me LOL. I was wondering why my nitrous bottle was empty. It's a BP-Z3 is installed in a Lotus7 replica. Packaging is much better, exhaust is MUCH better. Motor is well prepped, not stock.
How do the torque numbers "not gel"? You know that horsepower is derived from torque and RPM, right?
There's no level of impropriety in the plots; I don't sell turbos or have an agenda. If you feel like an EFR is a good choice for you, go for it. In this test, the EFR lost power, both on the actual and butt dynos. The car's owner is registered on this forum and he'll post up if he feels like it.
How do the torque numbers "not gel"? You know that horsepower is derived from torque and RPM, right?
There's no level of impropriety in the plots; I don't sell turbos or have an agenda. If you feel like an EFR is a good choice for you, go for it. In this test, the EFR lost power, both on the actual and butt dynos. The car's owner is registered on this forum and he'll post up if he feels like it.
I know how horsepower is derived, i'm just saying that the torque number you got out of the 2560 is pretty much unpossibru, and it's weird that it falls so hard. I can't understanding losing almost 100wtq from peak to redline on a built BP with any EFR.
I actually remember you posting a similar 2560 making 325whp in a Locost/Lotus/Caterham thing awhile back... this the same car?
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06-17-2014, 01:45 PM
#45
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Can you get permission to post pics of the manifold and exhaust? I want to see what better and MUCH better looks like.
I bailed on a GT2560R in favor of an EFR6258 specifically because of the limitations we've traditionally seen out of the 2560. The information you've posted does not match what we've seen out of either turbo, so please do not take our skepticism as personal attack. We are just trying to understand.
How much power did Paul make on his 2560 & AbsurdFlow setup? AFAIK that's as good as it got with a 2560.
I bailed on a GT2560R in favor of an EFR6258 specifically because of the limitations we've traditionally seen out of the 2560. The information you've posted does not match what we've seen out of either turbo, so please do not take our skepticism as personal attack. We are just trying to understand.
How much power did Paul make on his 2560 & AbsurdFlow setup? AFAIK that's as good as it got with a 2560.
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06-17-2014, 02:56 PM
#47
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Paul's best was somewhere around 311rwhp@17psi. on a dynojet with 93 octane, MS2. '99 engine, BEGI cast intake mani. but 304rwhp at 14psi at the same day, so it was at it's limit. I think torques were around 260's.
E85 + MS3? I don't know. I trust Ben but that's nuts.
E85 + MS3? I don't know. I trust Ben but that's nuts.
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06-17-2014, 04:17 PM
#53
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Wait, this manifold or something else?
1.5 MM overbore actually, block filler used in water jackets up to waterpump to add stiffness .
Wiseco pistons with 8.8 compression ratio after decking and adjusting the squish and compression ratio.
turbo info on my for sale ad:
The compressor has GARRET A/R 60 M24 1-1 on the casting.
The bearing housing has
HJ 01 06J
14411-69F00
466541-1
Turbine housing has Garret 2
turbine inlet flange is 72 mm x 45 mm with holes for 10 mm studs. T25.
https://www.miataturbo.net/miata-par...ops-etc-69843/
Same log manifold made from weld-els used in this setup.
Wiseco pistons with 8.8 compression ratio after decking and adjusting the squish and compression ratio.
turbo info on my for sale ad:
The compressor has GARRET A/R 60 M24 1-1 on the casting.
The bearing housing has
HJ 01 06J
14411-69F00
466541-1
Turbine housing has Garret 2
turbine inlet flange is 72 mm x 45 mm with holes for 10 mm studs. T25.
https://www.miataturbo.net/miata-par...ops-etc-69843/
Same log manifold made from weld-els used in this setup.
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06-17-2014, 05:00 PM
#55
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I think the big question is, what makes your experience so different? Normally a 10 PSI 2560 setup makes about 220 whp. But a similar setup at 10 psi on the 6258 bends rods.
Why?
Why?
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06-17-2014, 06:24 PM
#58
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I have complete faith in the dyno results because I was there. Everybody expected the BW EFR to blow away the Garrett. Everybody was surprised when it didn't.
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06-17-2014, 06:34 PM
#60
you can fix that you know. dynapac gives you to power to hold the car for a second or two before starting the pull and it allows you to control the length of the pull. When I dyno'ed at a spec miata shop on a dynapac they only had it setup for SMs and I really didnt want to make a 25 second long 4th gear pull, with 7 a second hold at the start of the pull. So I think I dropped it to 3 seconds and a 15 second long pull because those were the numbers I pulled out of my *** on the spot.
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