fuel pressure reg and switch question with pictures

[Fehrion_sit]

just a question about my Fuel Pressure Regulator, what does the little screw at the end do? im assuming that adjust fuel pressure.

also, what is the thermostatic switch for?, circled in the picture. it is placed into the thermostat housing.

these are both on a 90gsx

thanks a bunch

 

[bryanwheat]

The screw on the regulator is to adjust fuel pressure and the thermo switch is for the egr system.

 

[steve]

^ Exactly right on both counts.

 

[Fehrion_sit]

if i leave the egr switch out, would that be an appropriate location to mount a temp sensor? or is it best to leave it there. my egr is inop

 

[whe3ls]

id leave the temp sensor where it is.