[mwebb]

i do not yet know how much is too much but
the +10 degree cam wheel used with the 3tech economy cam is TOO much.



assuming you have zero experience with pressure transducers
this diagram shows pressure over 720 degrees in one cylinder , begin and end at 0 degrees TDC.

the G10 engine with the OEM cam at idle
and with the
3tech economy cam AND the +10 degree cam wheel at idle and WOT

note the pressure spike inside the red ellipse around 360 degrees after TDC
or 360 ATDC.
the pressure spike is not present on the OEM cam but is with the 3tech economy cam WITH the +10 cam wheel

that pressure spike occurs after the exhaust valve closes
when the piston is still traveling upward expelling spent exhaust gases from the combustion chamber .... but since EVC has already occurred
those gases can not escape
pressure does not drop until the intake valve opens
you can hear this , through the air filter ....

this is
built in ever present always on ... EGR ....
===============================
i have switched back to the OEM cam wheel , with the 3tech economy cam
just need a spare minute to capture some more info