Hi,
Use the stroker base tune. Make sure you installed the MAF correctly by going through our trouble shooting guide listed in the manuals section of our website. The stroker base tune is meant for the 3" MAF, 19# injectors, stock fuel pressure and the usual bits and mods that come with doing a stroker.
Please email us the air fuel ratio using the stroker base tune and we can modify it from there. It should be pretty darn close and if it is not, there are other mechanical problems affecting your engines tune.