S3-14 944 2V Best power band 3600-6500 rpm. 900 rpm idle. .474 cam lift intake and exhaust. Stock base circles. Can use stock valve springs or preferably 944 Turbo valve springs for best results. 12-18 bhp over stock camshaft with stock exhaust. Needs stock fuel system pressure with Motronic ECU at click 1. Greater benefits from after market engine management or re-mapped Motronic. Tested against all comparable competitors camshafts and proven better. Can be used for Turbo also. Can meet CA smog tests as either NA or Turbo.