The stock cam gears are the same, so no worries. Valvetrain wise, since you have an ek4 you should just upgrade you're exhaust side valve springs. The ek4 has dual valve springs on the intake side only.ok thanks, and do i need to use my cam gears off my cams or the itr or they the same?
Yes. the valve springs are the weak point.do these cams work for a b16 without upgrading valves?
in my opinion, it would be worth it only if you are getting the cams for a good price. They aren't huge horsepower adders, but they do make a good difference in power (before and after tuning). You should always tune your car when adding modifications to get the most out of any setup. Peak horsepower numbers shouldn't be the main focus when judging increases on power through tuning. The overal horsepower and torque curve make the difference. You could gain a total of 5whp as a peak number but have tons of more midrange or a large increase in torque somewhere in the powerband depending on mods and the tune.ive already got exhaust and intake plus light flywheel, jus want few more horses and wanted to no if this would be worth it