2G 4g63 N/A ---> Turbo, which spark plugs

[patman]

Hi!
So I'm doing a conversion on my N/A 4g63, I'm planning on running the T25 on stock boost with slight modifications (around 220-230bhp) , but keeping the OEM N/A pistons in, so I don't really know now if I need to change spark plugs now. I read here about the NGK bpr7es and the 6es I just don't know which to choose because of my different pistons, does that affect anything, or can I go with the bpr6es?
thanks for the help

 

[ThunderChild]

I'd say go with a colder ranged plug usually, but if you're using most of the stock components and not above stock boost for the time being, stick with the 6's, then if you add more mods, go to the 7's to help fight preignition possibility.

 

[motomattx]

I would start with B8es plugs and work your way forward if they wont stay clean on their own, you dont need the projected tip or the resistor on the other ones.