RB20 larger turbo, plug size?

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thanks for the input

[Sileighty_85]

Wow.... First of all you need Injectors, MAFS, ECU/tune.

Second you need colder plugs (Higher Number)

Third: Boost levels are not the same between every turbo. Your T4 does not flow the same amount of CFM at 6psi as your Stock RB20 turbo would at 6psi. that T4 probably pushes more air at 6psi than your stock RB20 turbo did at 13psi.

So before you grenade that engine you should park it till you tune it.

[Yellow4g63]

T4 with stock injectors and maf??

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thanks for the input