Perrin Fuel Rail kit - Subaru WRX Forum
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post #1 of 1 Old 10-08-2007, 11:08 AM Thread Starter
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Join Date: Jan 2007
Location: Pennsylvania
Posts: 123
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Perrin Fuel Rail kit

Since i have misfiring problems....
cylinder 1,3...sometimes #2...
i've decided to try perrin fuel rail kit to solve this problem...
my tech said it might be my one step colder iridium spark plug gaps...but i checked it and it's at 3000 so it's cool...
but my question now is that if i upgrade to perrin fuel rail, do i have to get it tuned again? or it's ok to drive it without it...

291.11whp/321.13wtq 18psi
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