Originally Posted by
risen
If you look thru the turbonator smec thread there's an explanation of the T2 vs T1 wastegate plumbing and control tables. I think the later T1 style controls the default (without ecu connected to wg solenoid) will always leave the boost/vac source connected to the wg. The T2 style controls will (without the ecu connected to the wg solenoid) will leave the solenoid connected to atmosphere (and never open the wg). Basically T1 higher duty cycle= more boost, T2 higher duty cycle = less boost. There's a better explanation in the T-SMEC thread.