WHATS THE HIGHEST DEG. U CAN RUN ON A TURBO CAM IS 270 DEG WITH 10.5 LIFT TOO MUCH ? I NOTICE A LOT OF PEOPLE USE 264 WITH TURBO'S

270 degree cams have A LOT of duration. Too much duration leads to to much overlap! When choosing cams, you want to have little duration (260-264 degrees) and a lot of lift (12mm - 12.5mm). anything above 10.5mm of lift you will need to change out the factory valve train. The JWT S3 cams are 260 degree and the S4 cams are 264 degree. Most FI SR20's use the S3's!