Perrin Fuel Rail - Review and Install Notes
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From: North Andover, MA
Perrin Fuel Rail - Review and Install Notes
I just put the Perrin fuel rail in my Evo IX last night, and I wrote up the whole thing in my blog. I included a little bit of detail on why you would do an upgrade like this and added some detail shots of the Perrin and stock rails.
Hope this can be of use to some others on the board.
For any of the more technical here, I'd appreciate any consructive criticism of my explanation of Why.
Hope this can be of use to some others on the board.
For any of the more technical here, I'd appreciate any consructive criticism of my explanation of Why.
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From: North Andover, MA
It will.
Interesting timing on your question, BTW. I've been dealing with a high-rev fueling problem, where I wasn't able to get enough fuel into the motor at the upper end of the rev range in order to fatten up the AFRs. Turns out swapping back to a stock rail fixed it.
This really surprises me, as the capacity of the fuel rail actually should have helped. That said, we suspect there may have been some form of cavitation happening as the injectors were required to pulse so fast, most likely a product of the internal shape of the fuel rail chamber. I need to think about it a little more and try to understand what was going on, but then I plan to update my blog and posts with more info.
Interesting timing on your question, BTW. I've been dealing with a high-rev fueling problem, where I wasn't able to get enough fuel into the motor at the upper end of the rev range in order to fatten up the AFRs. Turns out swapping back to a stock rail fixed it.
This really surprises me, as the capacity of the fuel rail actually should have helped. That said, we suspect there may have been some form of cavitation happening as the injectors were required to pulse so fast, most likely a product of the internal shape of the fuel rail chamber. I need to think about it a little more and try to understand what was going on, but then I plan to update my blog and posts with more info.
Just wanted to say that the stock rail is good for 700whp though. Even though that first hole is small, it gets bigger inside of there. I did an aeromotive rail with my setup for aesthetics and so it looked nicer but its not required. I know many people making 500whp+ on the stock rail with 1000cc injectors
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dont want to bring this back from the dead but if anyone could give me info. while using this fuel rail replacing stock unit swapping over stock injectors. would this cause you to run rich w/o a tune. also if i use this set up over stock can't i just retune it to work and fix if it is running rich or leaner.
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Evolving Member
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From: North Andover, MA
If all you're replacing is the fuel rail and not the injectors or fuel pressure regulator, than you won't have any issue with running lean. That said, unless you plan to tune the ECU and need to put more fuel through the system, why are you replacing the stock rail at all?
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I just put the Perrin fuel rail in my Evo IX last night, and I wrote up the whole thing in my blog. I included a little bit of detail on why you would do an upgrade like this and added some detail shots of the Perrin and stock rails.
Hope this can be of use to some others on the board.
For any of the more technical here, I'd appreciate any consructive criticism of my explanation of Why.
Hope this can be of use to some others on the board.
For any of the more technical here, I'd appreciate any consructive criticism of my explanation of Why.