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Hey Donatas!

Start with .032 and go from there. I had mine gapped at about .029 on the old MSB single turbo, but I didn't exactly do that in a scientific manner either. :)
 

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Discussion Starter #3
Thanks, Steve. I was thinking leaving the gap at where the factory plugs are set. I think that it is .044. Oh well, I guess that I will have to play with it.
Later
Donatas
 

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I left mine gapped at stock(.44) when I was BPU and they where great. That will not work well once you go single. With my SP57 boosting to 19lbs, it would blow the plugs out. I had to order new plugs after 2 dyno sessions (about 20 pulls) becuase they are so fouled that my car idles bad. I also had 20k miles on these plugs though.
Josh
 
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