Phase 1 cam for mildy modified N/A engine with standard ingestion and exhaust upgrade. Excellent rise in mid-array energy as compared to OEM cams. The difference in power is only a factor with bigger than initial revs, for instance OEM Silvertop con-rods are Ordinarily able to be revved to some https://jeffreydkmon.ageeksblog.com/31257462/jdm-toyota-4a-ge-fundamentals-explained