Rx8 R3 greddy turbo kit with Haltech 500 RE From PR - Page 11 - RX8Club.com



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Old 03-15-2017, 01:03 AM   #251
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Agree, you have external fuel regulator?? Or stock?

My car has 360rwhp with problem in old dyno. I think in modern dyno I get 15 more same boost (15). But right now I use my car daily at 10psi.
Stock regulator with a DW300 pump and some internals mods .
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Old 03-15-2017, 08:11 AM   #252
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Stock regulator with a DW300 pump and some internals mods .

Me too, but Rocky told me it's not good to use that for the 400rwhp. An external one is necessary. When using the factory forces the pump and the injectors to the maximum and that is not good. Fuel pressure is important to be the same all time.
I use line 6 from the pump to the injectors and I will use the fuel factory line for return with external aeromotive regulator 13129 for the modification.

We will continue to try new changes.

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Old 03-15-2017, 08:19 AM   #253
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Aeromotive 13129
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Old 03-15-2017, 05:20 PM   #254
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Mine runs around that 400whp mark currently and I couldn't agree more ... I run 30%Ethanol and I think it's a great fuel . Good mileage , great octane , great cooling properties and 100% reliable (as long as I can get E85 to make it up with) . A better option than injecting meth IMO.

I would add that 400 is about the limit of the Renesis exhaust ports no matter what octane fuel you run ...go much higher and you will become well known to your engine builder .
Wasnt it the Ethanol you thought chattered your housings?
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Old 03-15-2017, 07:38 PM   #255
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Wasnt it the Ethanol you thought chattered your housings?
Ethanol combined with aftermarket seals ...yes .
I now have Mazda rx7 oem seals in there and ,fingers crossed, they will be fine .
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Old 03-15-2017, 07:43 PM   #256
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Originally Posted by gamaliel31 View Post
Me too, but Rocky told me it's not good to use that for the 400rwhp. An external one is necessary. When using the factory forces the pump and the injectors to the maximum and that is not good. Fuel pressure is important to be the same all time.
I use line 6 from the pump to the injectors and I will use the fuel factory line for return with external aeromotive regulator 13129 for the modification.

We will continue to try new changes.
I have a fuel pressure guage ... it stays steady at 58psi under boost .
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Old 03-16-2017, 11:09 AM   #257
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I have a fuel pressure guage ... it stays steady at 58psi under boost .
Same here. I don't know how the E85 treating my housings but the engine still has good compression (low 8's at 290RPM) but I guess it depends on a lot of factors and I am only peaking at 13psi or so.
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Old 03-16-2017, 09:49 PM   #258
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I have a fuel pressure guage ... it stays steady at 58psi under boost .
And mine 60psi. But it is not the same a stock regulator of few pounds that one bigger with greater handling of pounds of pressure. I will make the change for an external one and try. External regulator closer to the fuel rail has to make some changes. We will continue to improve and research with the results.
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Old 03-16-2017, 10:15 PM   #259
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And mine 60psi. But it is not the same a stock regulator of few pounds that one bigger with greater handling of pounds of pressure. I will make the change for an external one and try. External regulator closer to the fuel rail has to make some changes. We will continue to improve and research with the results.
All you are trying to achieve is a steady pressure at the injectors (or rising if you go that way) . Anything that achieves that ...works .
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