IAC Delete or Drive by Wire?

[richierichness]

s14 w/stock rb25 s2
q45 TB
Greddy knock off
VE tuning with Haltech Elite 2500


What are most people doing to clean up the idle on their RBs? This thing is a nightmare once the engine warms up. If I target any RPM below 1100 the idle will bounce around and eventually the engine will stall. My goal is stable idle between 700 and 900 rpm.

Steps taken so far:
-Adjusting IAC screw
-Tuning fuel via open and closed loop
-Unplugging IAC and valve
-Boost Leak Testing
-Fuel pressure is good (43 psi)
-New injectors (900 cc)
-New Battery
-New plugs gapped to .030"
-Ohms coil pack testing (hot and cold tests)
-O2 (Haltech) Wideband sensor is functioning properly (deleted oem narrowband)


Steps I have not taken yet:
-Replace Coolant Temp Sensor
-Clean IAC and valve
-Diagnostics testing for IAC,valve, or TPS (does this need to be done?)
-Clean Throttle body

Should I stop fucking with this and completely delete the IAC system?

Should I go 1 step further and do a drive by wire TB? Does anyone make a kit or parts to support drive by wire with the RB's?