Spark plug question?
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Spark plug Question
I have an S5 engine all stock w/Microtech LT-8.
I have stock cleaned 550 primary inj. and new 750 secondary inj.
I plan to run about 10-12 psi. of boost.
What would be a good spark plug for this set up?
I have an S5 engine all stock w/Microtech LT-8.
I have stock cleaned 550 primary inj. and new 750 secondary inj.
I plan to run about 10-12 psi. of boost.
What would be a good spark plug for this set up?
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Ok, maybe I should have been clearer. I’m looking for a temperature range.
Should I just use the stock temp. plugs or should I go colder by 1 step or maybe 2 steps colder? I have also read that copper plugs are better for forced induction applications over platinum plugs. I don’t really care about longevity.
Should I just use the stock temp. plugs or should I go colder by 1 step or maybe 2 steps colder? I have also read that copper plugs are better for forced induction applications over platinum plugs. I don’t really care about longevity.
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Originally Posted by Icemark
In the South (like Houstan) I would probably run all 9s in the trailing and leading positions with under 15psi.
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