Been there done that lol
I had a SC14 under driven to 5psi, and a GT2860RS pumping into it (after intercooler), then a smaller cooler after the SC14.
1. The boost doesnt add up, the SC multiplies the boost not adds to it eg. 12psi from turbo + 5psi from SC = 25psi! Because the SC is multiplying the air going into it, not adding to it.
2. The SC creates a lot of heat and power wastage because of the pressure differential accross it (13psi in my case), so it is great to drive but makes less power then turbo only setup.
3. The SC does make the turbo spool earlier, about 1500rpm earlier in my case.
Ultimately you need to bypass the SC when the turbo kicks in, so you dont get the pumping losses.
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