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The new air valve allows for incoming charged fresh air from the turbo to be diverted safely into the exhaust manifold pre-turbine wheel with the throttle at low opening angles to allow for safer spooling of the turbocharger without the potentially damaging throttle-based late combustion event style anti-lag that can induce high engine stresses and break connecting rods
Radium does not have these plugs available
- Ethanol Content Sensor
For Evo 4 & 5 use PFR44-113
 The OEM insulating spacers (Honda P/N: 16638-PNA-000) are reused and phenolic washers are included to thermally insulate the fuel rail from the aluminum intake manifold
Radium Fuel Surge Tank Installation Kit Bmw E46 k24Z3 k24Z4 The new air valve allowsRadium Engineering Bolt in installation in trunk area of E46 BMW 3series Excludes Convirtable . Prevents fuel starvation issues during aggressive driving. Surge tank sold separately This comprehensive installation kit includes everything needed to install a Radium fuel surge tank. The base price is for the installation kit ONLY. The fuel surge tank (FST) is sold separately. It can be purchased HERE. The BMW install kit locates the FST in a collision