EFI525 dyno data anybody?
01-14-2007, 03:20 AM
#11
Re: EFI525 dyno data anybody?
FYI the dyno lab that I referenced has tested a number of EFI525's and advised that they consistantly produced 565 cshp - 575 cshp. This dyno lab uses the HiPerf motor industry standard HP rating (60*F ambient air temperature) and not the SAE rating system (77*F ambient air temperature) used by the OEM automobile manufacturers.
Last edited by Phazar454Mag; 01-14-2007 at 04:00 AM.
01-14-2007, 09:04 AM
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Re: EFI525 dyno data anybody?
I can not comment on the specific < 565 -575cshp ratings you noted. However it is true that the same raw dyno HP test results will net a higher hp rating when interpreted per the HiPerf motor industry standard HP rating (60*F ambient air temperature) than when interpreted per the SAE rating system used by the automobile (OEM) manufacturers (77*F ambient air temperature). There is an OSO.COM thread that discusses this in great detail.
01-14-2007, 09:19 AM
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Re: EFI525 dyno data anybody?
Quoting RMBUILDER:
STD J607
J607 standard 60°F / 0% humidity / barometric pressure of 29.92 in-Hg
SAE J1349
SAE J1349 standard of 77°F (25°C) / 0% humidity / barometric pressure of 29.234 in-Hg (99 KPa).
The J607 rates 4-5% higher than J1349 due to a compensation for motoring friction loss.
STD J607
J607 standard 60°F / 0% humidity / barometric pressure of 29.92 in-Hg
SAE J1349
SAE J1349 standard of 77°F (25°C) / 0% humidity / barometric pressure of 29.234 in-Hg (99 KPa).
The J607 rates 4-5% higher than J1349 due to a compensation for motoring friction loss.
01-14-2007, 02:16 PM
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Re: EFI525 dyno data anybody?
So the 525 makes around 570 hp when compared to the way most of us have stuff dynoed with the lower sae temp rating,that is impressive. I did wonder how it went from the 535-540 most people talk about it making (which is also impressive for what it is) to the higher numbers. Either way,it makes good numbers,too bad its so much money,Smitty
01-14-2007, 05:21 PM
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Re: EFI525 dyno data anybody?
So the 525 makes around 570 hp when compared to the way most of us have stuff dynoed with the lower sae temp rating,that is impressive. I did wonder how it went from the 535-540 most people talk about it making (which is also impressive for what it is) to the higher numbers. Either way,it makes good numbers,too bad its so much money,Smitty
01-15-2007, 06:48 PM
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Re: EFI525 dyno data anybody?
Quoting RMBUILDER:
STD J607
J607 standard 60°F / 0% humidity / barometric pressure of 29.92 in-Hg
SAE J1349
SAE J1349 standard of 77°F (25°C) / 0% humidity / barometric pressure of 29.234 in-Hg (99 KPa).
The J607 rates 4-5% higher than J1349 due to a compensation for motoring friction loss.
STD J607
J607 standard 60°F / 0% humidity / barometric pressure of 29.92 in-Hg
SAE J1349
SAE J1349 standard of 77°F (25°C) / 0% humidity / barometric pressure of 29.234 in-Hg (99 KPa).
The J607 rates 4-5% higher than J1349 due to a compensation for motoring friction loss.
Thanks,
Dustin
01-15-2007, 07:38 PM
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Re: EFI525 dyno data anybody?
01-15-2007, 10:55 PM
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Re: EFI525 dyno data anybody?
I was dicussing this thread with my engine builder today, and he also has dyno'd some 525's and said what he's seen is around 540hp.
01-16-2007, 08:32 AM
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01-16-2007, 11:54 AM
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Re: EFI525 dyno data anybody?
My appologies to all. I missunderstood what I was told. Per the dyno lab a new HP525EFI will test 540-555cshp per STD J607. After being subjected to a couple of races the engine will loosen up and will generally produce 565 - 575cshp. Again my appologies.
