Seller notes

The SteamSpeed 4-port Electronic Boost Controller ups the ante again. Our 3-port controller is vastly superior to the stock units, but our 4-port version goes further providing the maximum level of boost control available allowing more sophisticated boost control schemes allowing the tuner to have even more control and wider ranges of operation of the wastegate.Our 4-port controller can be used in many configurations, so consult your tuner to understand if a 4-port controller is right for your b...

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