hey fellas new to the forum but currently have my ed 4L out at the moment im goin to put in a crow cam 2549 cam possibly roller rockers xr6 valves n springs head will be done at shop shaved 20thou, ported
bottom end is undecieded yet but i havnt had much experience on using a chip with the cam, would it be worth it?are there any good read ups or sites which sell
just somethin which you can use with your std ecu but b able to road tune it
any help appreciated thanks guys!
karl

the chip will help it idle, plus better economy and more throttle response.

falcon 4L engines come factory fitted with roller rockers, granted no rollers on the rocker shaft but still roller follower.

and 20thou wont see much in compression min would 40thou if your looking to get a boost from it