Originally Posted by
deadmancourt
i usually run the od 77t plugs!....the package on the p7 plug says medium!
From memory you run 20% yes ? The OD77T would be nice for 20% being a hotter plug than the 97T.
That P7 should be fine. Going cooler on the 20% fuel is not going to do any harm. Performance might suffer a little, I'm not sure, but you won't hurt anything.
Have you thought of changing up to 25 or 30% fuel with an OD 97T ? The Taiwanese motors seem to like the higher nitro content fuels, and I think you would find the performance increase quite pleasing.