Radium Engineering Port Injection Kit - K20C1

[blueroadster]

Anyone have experience with the Radium Engineering Port Injection Kit that augments the OEM fuel system? Many additional parts are required to use it and I am not sure about wiring changes needed for Hondata tuning support. Could this be a better path to consider vice upgrading to a HPFP, larger injectors and LPFP?

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[apl360]

No idea on this platform but on the mk7 GTI. They have to upgrade the hpfp to use port injection. And even then it’s wise to also address the lpfp if swapping the turbo for something significantly larger than the stock is20.

some cats do the port injectors and lpfp. And just use the damn thing so cold start uses only port injection. Keeps the valves clean. And at wide open only the direct injectors are used.

 

[blueroadster]

Reading some more, adding port injection sounds like a hot mess.

 

[Two Step Performance]

Reading some more, adding port injection sounds like a hot mess.

Agreed, this is not really a great option in 2025. Advances in the Honda 2.0T GDI fuel systems have made upgrading the direct injection system (instead of adding port injection) a no brainer.

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