250whp and Stock fuel rail ? - Miata Turbo Forum -Boost cars, acquire cats.

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Old 09-02-2012, 11:49 PM   #1
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Default 250whp and Stock fuel rail ?

Okay I did search, spent 1/2 hour looking. couldnt find a for sure answer. I see people doing the DIY stock fuel rail dual feed mod.

Is this something that needs to be done for 250whp or are people being paranoid ?
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Old 09-03-2012, 12:12 AM   #2
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Short answer: NO

You are completely fine with the stocker.

Long answer: check my previous build thread and many others just like it: over 300whp, e85, and stock fuel rail doing just fine with no drama. In fact, AbeFM (or maybe someone else, I'm drunk ATM) did a test and disproved the bs claim about "needing" a dual feed rail on our cars.
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Old 09-03-2012, 12:45 AM   #3
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DIY dual feed isn't worth doing at all. The benefit comes from a larger bore which allows you to maintain a stable, higher pressure even when you have big injectors running at high duty cycle.
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