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Looks great
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!
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Good effort and well done.
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If any influential comments, get an EGT fitted so you can see if leaning that fuelling off has any adverse effects.
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.
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.
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.
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.
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Just on that, does look a tad on the lean side under load looking at the graph
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.
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.
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.
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( at that low boost
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)
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My comments comes from experience, okay my setup perhaps differs a little, but similar principal.
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Under good a load
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- 1.4
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/ 1.5 bar.
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.
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.
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my afr's were around 11
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- 11.5 which is fine.
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.
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but i did a hard track day and one of my wastegate nozzles popped off.
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.
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.
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so was gunning it around at 0.8 bar.
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.
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.
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I had head gasket problems back end of last year after 8 month old build
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.
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.
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.
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combination of being unaware of a rad leak and possibly high in cylinder temps, anyway.
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.
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upon pulling the head off.
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.
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I found hot spots on the 2 middle bores.
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.
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which was noticable on the polished head surface in the cumbustion side too.
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Being anal, I pulled the 2 pistons out for close inspection and found one of them to start developing a trace crack around the valve recess, this all from the heat.
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Had this crack developed more, the deformation of the piston crown would have parted and abliterated the piston
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/ head
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/ cylinder
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/ possibly crank damage.
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Replaced them, stuck it together and richened it up at the low boosting area.
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Also included an EGT where previously I'd just work around the wideband.
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Due to this mental scaring, I tune the engine very rich now where the EGT's have never exceeded 750 degrees C
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!
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So my tip is, if you're going to belt about at the low boost setting, stick more fuel in otherwise can lead into a labour intensive
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/ costly exercise to rectifying it.
![Very Happy :D](./images/smilies/icon_biggrin.gif)