I understand what im doing by running a turbo out of efficency bud, but isnt a GT15 meant to be out of its efficency range above 16/17psi? Im still not sure what turbo ive got as its the two nuts on the rod to adjust which indicates a K03? but imo the amount of boost needed on a stage 2 hdi takes any of the stock blowers out of efficency... just im a few psi over the recommended boost level and GT's dont like to be pushed too hard. As ive said I didnt intend to adjust it up to 24 but because my gauge wasnt reading right on the test drives it kept saying 19, so we adjusted it for the 3rd time and i just went home, only after twisting the gauge right way up it stared reading 24.
By all means it spikes up to 24 but thats if im off boost coming on, its like it surges to make up for the lag, as it drops off to around 21/20 by 2800/3000rpm which is recommended stage 2 boost, if im at say 2800rpm and put my foot down i wont get 24 psi, anyway if it lets go i'll just have to upgrade/replace but i aint bothering turning it down, its reduced the smoke levels and feels more responsive, i'll take my chances
By all means it spikes up to 24 but thats if im off boost coming on, its like it surges to make up for the lag, as it drops off to around 21/20 by 2800/3000rpm which is recommended stage 2 boost, if im at say 2800rpm and put my foot down i wont get 24 psi, anyway if it lets go i'll just have to upgrade/replace but i aint bothering turning it down, its reduced the smoke levels and feels more responsive, i'll take my chances