071c work fine at 2.5bar !! iff your running standard boost or a bit over up to about 22psi just use some normal bcpr8es ngkr job done .
the top plug looks ok in colour , the bottom one looks wet with oil ! and rich so does the 2nd one down valve guides or stem seals maybe :O
Last edited by zvh; Feb 28, 2018 at 09:04 AM.