Yeah so I had added ga15 injectors and throttle body and adjusted K constant? For the new injectors but using the stock fuel map. Nistune board was fitted but not tuned so effectively running stock timing and fuel.
I think the k constant got changed back as it wasn't getting the fueling correct, so fueling may be close on your ga16 injectors already but the map could be less than ideal. You've much more changes than me so probably more to gain as well.
Here's the result on 98.
https://goo.gl/photos/phjthBD9AQMLt6uCA
Other mods, extractors and a custom inlet manifold that fits in a mini.
