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Old 07-11-2009, 06:19 PM   #1
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Plug question

Would a drop in spark plug heat range be nesecarry with zetec ? I'll be running 12lbs of boost, I wasn't sure and figured it be a good idea just to check, also while i'm at it how are the stock fuel pumps?? Will a walboro be needed for my project? Thanks fellas


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Old 07-11-2009, 07:40 PM   #2
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from what i know you want to go one heat range lower with doing a turbo or supercharger kit with that kind of boost. but i do see some guys that go two steps colder. i don't know why two steps though you will have to have somone with more knowledge tell you why. you should be ok with the stock pump at 12 lbs. i only hear about people using warboro pumps on big power.
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Old 07-11-2009, 07:50 PM   #3
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The rule of thumb is for every 50HP increase you need to go 1 step colder.

At least thats what I have been told, maybe we can get a real expert in here...
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Old 07-11-2009, 08:23 PM   #4
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Yo dont have a lot of choises with the Zetec , the azfs22c/463 is 1 step and about our only option
Yes I would go one step colder

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Old 07-11-2009, 08:31 PM   #5
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Awesome, that solves one question. Any definat iput on the fuel pump? As I recall I THINK walboro only makes a pump for return stlye applications but i can't be certain so IF i bigger pump is needed idk what to use really
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Old 07-11-2009, 09:20 PM   #6
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I would use your stock pump , have your tuner make the changes in the tune to up the fuel psi and watch it closely

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Old 07-11-2009, 10:21 PM   #7
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And if necessary, a Kenne Bell boost-a-pump, right...?
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Old 07-12-2009, 06:24 AM   #8
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