I havent tried searching yet but i will. Just thought someone might be able to answer me quicker.

I am planning on rebuilding my B18B for an All Motor setup, and was planning on putting in either USDM B16 Pistons, or some Weisco 11.5:1 Forged Pistons.

The question is if i am to do that will i need to get it tuned or can i just run 91 octane until the break in period is done. Then start doing the supporting mods to go along with the higher compression and get it tuned as needed.

Thanks in Advance.