Honda L15B7 Stage 2 cams are perfect for turbocharged engines with 48mm+ upgrades. They'll give you a significant boost in high RPM power, which is great for motorsport applications like circuit racing, drag racing, and roll racing. To use these cams, upgraded valve springs are required. When installing KVS262 spring and retainer kit, your valve train will be stable up to 8500 RPM. Camshafts are excellent with E85 fuel.