The factory map is circa 9.3:1 of richness

 

WOW, 9.3 was that on your haweye OE map? ... that is disgustingly rich ... no wonder they have such a bad rep for fuel consumption from the factory. My OE map was 10.5 at it's richest.

 

Threads like this are very informative for people like me (not the OP obviously..! ) who like to learn about real term issues. It's explained a lot of areas that I was finding confusing, thanks..

 

0.63 (I have to keep converting it as I've only ever worked in lambda)

Anything under about 0.70 and it hesitates like **** with decent ign and boost behind it.
Here's me thinking most ran about 0.71-0.73 in standard trim.
I suppose the manufactures have to take into account some will fit crappy intakes and free flowing exhausts without remapping.

 

I've just looked at a stock JDM map and a stock UK STi map, the JDM map is much richer than the UK map, weird!!

 

Yeah, you can't blame them - they're only trying to cover their backs (and a whole world of pain in potential warranty repairs), knowing full well the typical buyer will drive the crap out of it. After all, it's hardly a Prius.

 

Lambda is much more useful - particular when swapping between fuels.

Totally agree. I know mine was down at that mark and have seen a few others that are also in the 9's. Perhaps Subaru knew we would mod them, but I wouldnt dream of modding without mapping. Any power mod that is worth doing needs mapping for.

 

Fuelling is sorted now. Thanks to Dynamix. Top job!

 

Yep, most of us on here would do the same but, for example, newbies/non-tech minded types/ignorant types/cheap () people, possibly would mod the 'shortcut' route by sticking in MBTs etc. (without attending to fuelling/timing).


Subaru, I'm sure, would have had one eye on this when deciding on a map i.e. build in a fair chunk of safety...


BTW Duncan, excellent diagnosis and good stuff in helping Semper get his sanity back.