I have a pettit banzai 20B. Going to run 12psi on the twins. What plugs should i use? Need to get a few sets.. Steve Kan tuning coming soon..

 

same plugs you use on the 13b, ngk bur7eq, bur9eq. platinum if youre feeling rich...

 

It really depends on what coils you are running. if you are running the LS1 type coils, I recommended running B10EGV. If you are running DSM type coil, stock BUR9EQ will work fine.

 

I'm running some Bosch coils.. Pic attached.. Don't know where the coils came from. I will e-ail Cam @ pettit and ask him...

 

Double post..

 

I have same coil on my 20B, more then 7Lbs i use #10 for stop misfire.
Also, my engine is tuned by Steve.

 

So run B10EGV on the leading and BUR9EQ on trailing for 12 psi

 

^ no, he means 9's on both leading/trailing if you are using Mazda coils or 10's on both leading/trailing if you are using LS1 coils. Moreover, when using diferrent heat ranges the easiest way to remember is "L"=Lower Leading and Lower number heat number spark plug. Since you are using Bosch (not oem) then most likely he would prefer you use six 10's.

If you were get 9/10's then 9=L.

 

http://sparkplugs.com/more_info.asp?AAIA=&pid=3340

Is this the exact plug to buy?

 

Nice price.. gonna get 2 sets.