| **6-8 psi on a NA engine is totally do-able alhough the factory NA engine is already running very high compression. You might want to drop the compression slightly with a thicker head gasket. Also, I believe the stock NA injectors are pretty close to their flow limit already so larger ones might be needed. You can probably get a set of used factory TT injectors for fairly cheap though. Are you thinking about modifying the intake manifold for a single input? When all is said and done, are you planing on doing the tuning yourself? with what? You might have shitty turbo lag but for a few hundred it might be a fun little project. **I'm no expert on this
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