Gregconboy158 Posted April 11, 2019 Report Share Posted April 11, 2019 Hi all, got a Honda pnp ECU (b18) which I've just upgraded to k20 injectors on. Just wondering if anyone can help with the master fuel? Currently its stock 22ms from the basemap (untuned currently) and seems quite high. I dont know if my wideband is reading correctly but it seems to be real rich lol. How do I work out the master fuel? I've changed the dead times to recommended for k20 injectors but lost on the master fuel and if I need to change anything else. Thanks, Quote Link to comment Share on other sites More sharing options...
Simon Posted April 11, 2019 Report Share Posted April 11, 2019 I wouldn't over think the master fuel just lower it till its running ok and tweek as the engine warms up to keep mixtures ok at idle. Can then tune from there. Quote Link to comment Share on other sites More sharing options...
gtihk Posted April 13, 2019 Report Share Posted April 13, 2019 I WOULD START WITH ABOUT 16. Quote Link to comment Share on other sites More sharing options...
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