Exhaust Restrictor Plates GT4 Depending on the application clearances

Depending on the application clearances typically range from

Accurate valve timing control

so check out the SPECS and get your ride up to SPEC

no re-welding

radiused valve reliefs  and the pin fitting final hone on the wrist pin bore

Exhaust Restrictor Plates GT4 Depending on the application clearancesProduct Description The "TB Developments Restrictor Plate" is used to add a turbulence into the exhaust system to combat boost creep often associated when fitting De cats and Full Exhaust system that are a "little" to free flowing when using the OEM turbochargers. Tested to add enough back pressure to allow a safe boost increase when used injunction with an aftermarket boost controller, yet still giving better power gains than if the catalytic