Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Hi All,
Can anyone tell me if the valve timing was changed when the roller kits were produced? Looking for a new map for my 09 model with a Mivv exhaust but can only find single lambda rollerised maps.
As I recall, the cams don't get changed when you update from flat to roller. So the cam timing will only change due to the difference in the valve actuation. The roller tappet should shorten valve timing slightly. But most of the change would be in dwell at max open. If that is correct, that the cams are not replaced when you do the rollerization, that would be what it is. If I am wrong, if the cams are replaced, then ignore what I said and we are back to what John said (the only way to compare valve timing is to measure valve timing).No-one know this??