The point about the EFR WG is a strong one. The GTX I installed had an IWG, so we didn’t have all the extra pluming.When using a gtx you have to attach a ewg to the exhaust housing or use the Oeg housing that doesn’t flow like the efr turbos and fab either a dump or recirc it into the downpipe. Also the inlet of the turbo is much larger than the efr 7163 so the snabb inlet pipe won’t work. As well as the efr uses a cbv so you don’t have to source a recirc bov and weld it to the charge piping.
The zona rotor should compare to the Garrett g30-900
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The EFR is hard to beat in a full trade-off.
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