i'll be doing a write up of this procedure on my web site. basically it will work exactly the same way i control my twins with the e6k. how the e6k does it is within an rpm "window". this "window" tells the 2nd turbo when to turn on. the window controls a relay which controls the charge air and also controls the turbo control actuators. i'll have it posted this weekend.later.

 

the fd twins dont fit the with FC lower intake manifold.

 

i think the problem is the back turbo's inlet pipe. i noticed it sits way closer to the motor than the cosmo twins.