Looks great
!
Good effort and well done.
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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Just on that, does look a tad on the lean side under load looking at the graph
.
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( at that low boost
)
My comments comes from experience, okay my setup perhaps differs a little, but similar principal.
Under good a load
- 1.4
/ 1.5 bar.
.
.
my afr's were around 11
- 11.5 which is fine.
.
but i did a hard track day and one of my wastegate nozzles popped off.
.
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so was gunning it around at 0.8 bar.
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I had head gasket problems back end of last year after 8 month old build
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combination of being unaware of a rad leak and possibly high in cylinder temps, anyway.
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upon pulling the head off.
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I found hot spots on the 2 middle bores.
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which was noticable on the polished head surface in the cumbustion side too.
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.
Had this crack developed more, the deformation of the piston crown would have parted and abliterated the piston
/ head
/ cylinder
/ possibly crank damage.
Replaced them, stuck it together and richened it up at the low boosting area.
Also included an EGT where previously I'd just work around the wideband.
Due to this mental scaring, I tune the engine very rich now where the EGT's have never exceeded 750 degrees C
!
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
/ costly exercise to rectifying it.
lol
