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Old 09-16-2018, 03:53 PM   #1
phaznet
 
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Drives: '07 Yaris Sdn
Join Date: Feb 2009
Location: YGK
Posts: 151
Spark Plugs for Rotrex Supercharger

Hey all,

I recently installed the Rotrex c15-60 supercharger kit from Power Enterprise.

Yesterday I installed a set of NGK BRK7EIX spark plugs after reading that with S/C applications people recommend going with a colder spark plug and a narrower spark plug gap. Afterwards I got a CEL that read misfires in all cylinders (along with knocking), so I took the NGKs out (they were covered in carbon deposits) and replaced them with the stock Densos. However, since I have reinstalled the old spark plugs I find that the acceleration is a bit sluggish and there's still a bit of knocking, but no misfires.

Can anyone advise what I should do next?

Last edited by phaznet; 09-16-2018 at 07:21 PM.
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