Another day of tinkering. Swapped out the 1.8 injectors for yellow RX8 ones and popped it on the Dyno for a retune:


And the results:

So a rough 190bhp at the flywheel which is a considerable gain over 115bhp at the fly they have as standard.
Now I've got the full use of the revs (was limited to 6200 on the old injectors due to leaning out) it is much, much quicker. Tomorrow is my first AutoSolo of the year so looking forward to trying it out in some competitive motorsport in it's new boosted guise.