The LMS V11 tune on my 2016 works well... I do notice some big pressure drops in the rail pressure though.. and can imagine if you are somewhere where it's cold, it would cause problems... at 40F I saw pressure drops below 1000psi which I don't like...
Nothing you can really do helps the stock HPFP... you can lean out the mixture in the tune which will help take the load off the fuel system...
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