When you are pushing your car hard on the track or street, the increased "G-forces" will force the oil to collect in the sidewalls making it difficult for the oil pickup to get adequate oil to the engine which leads to engine failure. This upgraded oil pan increases volume and has internal baffles without changing the clearance from the ground.
It also includes an oil temp fitting, precision welds, and unlike cast type pans it will not crack if it's hit, preventing oil loss.
Internal baffles keep the oil pick-up submerged at all times. Increases engine oil capacity by +600cc.
This is a quality unit for your SR20DET that Tomei has just reduced in price!