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Stock Port, Sequential Twins @ c.15 PSI - 398 BHP / 360 lb. ft.

Old 11-12-17, 04:53 PM
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Stock Port, Sequential Twins @ c.15 PSI - 398 BHP / 360 lb. ft.

Had my car dyno'd today using a Maha dyno. Not 100% sure about the results as they seem kind of high to me by about 40-50 bhp but I'm not complaining! The curve is pretty good and the torque curve can't really be improved without more fuel and more boost on the primary.

AFRs at the low end start around 11.4:1 after about 3,000 RPM average about 10.9-11.1:1 to redline.

Air temps on water were low 30's C, off water as you see in the Commander shot.

Stock fuel system. Stock 550/850 cc/min injectors, stock fuel pump hotwired for full 12V, HKS Twin Power and mods in signature.

Ambient temps were about 8 C today. Pretty cold.

398 BHP (340 WHP) @ 6,036 RPM, 350-360 lb/ft (299-307 Wlb/ft) @ 2,900 - 6,100 RPM


Video of the dyno and my disbelief

Attached Thumbnails Stock Port, Sequential Twins @ c.15 PSI - 398 BHP / 360 lb. ft.-n3y8j17-imgur.jpg   Stock Port, Sequential Twins @ c.15 PSI - 398 BHP / 360 lb. ft.-onzpfib-imgur.jpg  

Last edited by cib24; 11-17-17 at 01:48 AM.
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Old 11-12-17, 05:57 PM
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The big give away is the fact you have stock injectors. That dyno can't be set up right. The most important thing is that it was tuned and is running well. Get on a different for your actual numbers. I was seeing 100% duty on 1300/550 at 8psi by 5000rpm on my old set up. I'm 1600/550 now at 44-48% duty. For you to make that kind of power on that set up would be some kind or sorcery.
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Old 11-12-17, 06:10 PM
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Originally Posted by cr-rex View Post
The big give away is the fact you have stock injectors. That dyno can't be set up right. The most important thing is that it was tuned and is running well. Get on a different for your actual numbers. I was seeing 100% duty on 1300/550 at 8psi by 5000rpm on my old set up. I'm 1600/550 now at 44-48% duty. For you to make that kind of power on that set up would be some kind or sorcery.
I don't necessarily disagree with you about 340whp being 10-20whp too high, but all of the tuners I have spoken to before I ever decided to go for 15 PSI on my stock setup (92-96% injector duty) said the fuel system with a hotwired pump can achieve about 400whp at 100% injector duty. Not that you should.

This Dyno was also part of a RX-7 Dyno day whereby three 7s went before me and three after so we were all using the same settings at least. A GT35R at c.12-13 PSI made about 355whp, a T04Z made 448whp at c.15-16 PSI and a S366 (or s363???) made 500whp at 17.5 PSI. Another stock port sequential with a front mount and freer flowing exhaust (no cat, large *** 5" HKS muffler) at c.12.3 PSI made 313whp, but he didn't have a hotwired fuel pump so was at over 90% on the injectors and couldn't push to my level.
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Old 11-13-17, 03:42 AM
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Got the images to work via attachments.

Last edited by cib24; 11-17-17 at 01:48 AM.
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Old 11-13-17, 03:42 AM
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Why are images no longer showing up on this website? Just links to the pics?
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Old 11-13-17, 11:13 AM
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Originally Posted by cib24 View Post
Why are images no longer showing up on this website? Just links to the pics?
you have to use the img code [ img ] [ /img ] then insert the url between it. no spaces between the brackets and the letters img
https://cimg0.ibsrv.net/gimg/www.rx7...3dedbde5c2.jpg


edit: nvm..... maybe the image is too big or the host doesnt allow for external embedding. save the image to a flikr account and use that img code
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Old 11-13-17, 12:02 PM
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Hmm...I have always used imgur and it was fine and I uploaded via the site here too. No luck.
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Old 11-13-17, 12:56 PM
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https://farm5.staticflickr.com/4527/...fbe36923_z.jpg
even from flikr it doesnt work... no idea man. weird situation. people can still see the picture if they click on it
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Old 11-17-17, 01:49 AM
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Thanks cr-rex. I got the images to show up as attachments rather than web links. I assume you can see them now in small little thumbnails?
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