HYUNDAI COUPE / TIBURON IDLE AIR CONTROL VALVE RESTRICTOR PLATE - IAC003
Hyundai Coupe / Tiburon Idle Air Control Valve Restrictor Plate
Laser cut from 2mm thick Virgin grade PTFE
Hyundai Coupe / Tiburon 2.0L 2003 - 2008
Hyundai Coupe / Tiburon 2.7L V6 2003 - 2008
"What does a restrictor plate do?
eliminates rev hang
better quality shifts
more aggressive idle
better throttle response
better acceleration from low speeds/rpm
Instead of using the iac valve to regulate your idle speed (the IAC fluctuates which causes the Ecu to tune for it) the plate holds the valve wide open and the holes controls the idle. This allows the Ecu to tune itself a more consistently which is a significant improvement against one thats always adjusting.
More vacuum is built up in the intake manifold which improves throttle response, It also provides a more steady idle.
The rpm drops quicker so the transmission doesn't have to wait for the rpm to drop so it will shift faster and harder when you're at full throttle but keeps a smoother shift when driving normal.
On top of all the functional stuff, it makes you have an awesome intake noise now because it pulls more air in at a higher velocity from an idle now."