Deleting the is common when building a high hp S14/S15 SR20DET due to the failure of the VTC intake cam gear with upgraded valvetrain. If you choose to delete your VTC intake cam gear on your S14 or S15 SR20, then this plug replaces the VTC solenoid.
By doing the delete, you will either have to run an S13 intake cam or use an adjustable cam gear to dial in the intake cam. Naturally the S14/S15 intake cam is retarded 15-20 degrees.
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