My mate who owns the Soarer came up for the weekend so we put the wideband (that I didn't have at the time of the turbo fitment) on it and went for a run. It was in the 10's in the midrange and off scale rich at high revs so we kept adding boost till it leaned out a bit.
Got it up to 20psi and it was still in the low 12's. That was plenty enough for him so we backed it off to 18psi and left it there. At 18 psi it only dips into the low 12's at about 5k rpm for a second(peaktorque maybe?) and then is back off into super rich territory.
The car obviously goes a lot harder with some boost in it, the owner is very happy with it.
I am curious what boost a GT3076 could deliver before a stock 1J was too lean, I suspect it would be a bit less than the KKR. Anyone with a 3076 on a 1J tried this(long shot I know).
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