what does a SAFC do?. My car almost runs smoother and faster at like 1/4-1/2 throttle rather than full. Do you think a SAFC would help. No boost leaks, car is tip top shape to my knowledge.

1997 Eclipse Spyder GST
5-speed
16g turbo
3" full exhaust
Intake pipe
BOV vented
boost controller

 

do a search. There is a long thread about this

 

It attaches to your cars computer that controls the air/fuel input to the engine and this modifys that signal to the engine changing the air/fuel input.

The explanation is in your sig... VENTED BOV... you might want to change that.

 

venting the bov with a stock MAS will make it run like crap.

 

HKS Vein Pressure Converter (VPC)
The VPC is a fuel computer system that replaces the factory Mass Airflow Sensor (MAS) setup with a Manifold Absolute Pressure (MAP) assembly and controller. The benefit of this conversion is that the flow of the intake system is improved by eliminating the restrictive factory MAS sensor assembly.

This modification allows the blow-off valve to be vented to the atmosphere for better performance and sound, as well as allows the use of a much larger, better flowing air filter assembly and larger injectors (if using larger injectors, request the custom Buschur Racing PROM for larger than stock injectors).

taken straight from buschur's website.

 

stock injectors dont need safc. get it when u buy biger injectors.