With parts still out and on the fritz we are just waiting, which really sux. But I thought I'd show another card I had up my sleeve. I made room and can make provisions in the kit for a spool valve. For those of you who want your cake and eat it, too. Small fast spooling turbo down low, big end, big turbo up top.
A 3/4in spacer in the jig, the same as a spool valve. You can get the kit with or without the space made for it.
This is what the larger turboed imports are picking up
This is a reason I chose the frame turbo I did also. This is it's basic construction.
Here you can see a split scroll, and an open version.
The spool valve will block half of the housing at lower speeds which will increase the velocity of the gas into the turbo spooling the turbo faster. The solenoid will open it at a set point returning the turbo back to normal operation before back pressure becomes too high to make any power.
This is similar to what most big turbo imports are seeing. Should be helpful on these foot braking cars since there are no transbrakes for the 6r80's. The white one is spaced for a spool valve juuust incase