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If they are run with the same boost, it should have been oposite.
Here is some facts what the aftermarket intake cams does. It does make possibel to run more boost.
And the exhoust is probarly help the flow/spool up.Some facts
Look particular on the Dynamic boost compression ratio wich goes down a value worth 2 psi boost when the VTC switch off.
One tumb rule on stock turbo`s is that the backpressure wich will increase dramatic from 15 psi boost. This will decrease when VTC switch off= less overlap. And since overlap is no no on turbocharged engines or at least when we have charge, the VTC is a nice feature to make torque in the low end since it increase the dynamic compression ratio when it is on. And less overlap when it is off.
Used a calcuator with the setting 50 feet above sealevel and 16 psi boost. Stock Auto cam`s
Overlap of 9.00 degrees
Intake Duration of 240.00 degrees.
Exhaust Duration is 248.00 degrees.
Inlet valve closing of 60 degrees ABDC (after bottom dead center).
Dynamic compression ratio is 7.00 :1 corrected for cam timing, altitude, and rod length
Dynamic Boost compression ratio, reflecting static c.r., cam timing, altitude, and 16 PSI i boost is
14.62 :1.
Overlap of 19.00 With NVTC on.
Inlet valve closing of 50 degrees ABDC (after bottom dead center).
Dynamic compression ratio is 7.44 :1 corrected for cam timing, altitude, and rod length.
Dynamic Boost compression ratio, reflecting static c.r., cam timing, altitude, and 16 PSI boost is
15.54 :1 Stock 5 speed cam`s
Overlap of 8.00 degrees
Intake Duration of 248.00 degrees.
Exhaust Duration is 248.00 degrees.
Inlet valve closing of 69 degrees ABDC (after bottom dead center).
Dynamic compression ratio is 6.52 :1 corrected for cam timing, altitude, and rod length.
Dynamic Boost compression ratio, reflecting static c.r., cam timing, altitude, and 16 PSI boost is
13.62 :1
Overlap of 18.00 With NVTC on.
Inlet valve closing of 59 degrees ABDC (after bottom dead center).
Dynamic compression ratio is 7.05 :1. corrected for cam timing, altitude, and rod length
Dynamic Boost compression ratio, reflecting static c.r., cam timing, altitude, and 16 PSI boost is
14.72 :1. JWT race 264+4 exthoust and stock 5 speed intake cam`s
Overlap of 12.00 degrees
Intake Duration of 248.00 degrees.
Exhaust Duration is 264.00 degrees.
Inlet valve closing of 69 degrees ABDC (after bottom dead center).
Dynamic compression ratio is 6.52 :1 corrected for cam timing, altitude, and rod length.
Dynamic Boost compression ratio, reflecting static c.r., cam timing, altitude, and 16 PSI boost is
13.62 :1
Overlap of 22.00 With NVTC on.
Inlet valve closing of 59 degrees ABDC (after bottom dead center).
Dynamic compression ratio is 7.05 :1. corrected for cam timing, altitude, and rod length
Dynamic Boost compression ratio, reflecting static c.r., cam timing, altitude, and 16 PSI boost is
14.72 :1.
JWT race 264+4 cams (both)
Overlap of 20.00 degrees
Intake Duration of 264.00 degrees
Exhaust Duration is 264.00 degrees.
Inlet valve closing of 77 degrees ABDC (after bottom dead center).
Dynamic compression ratio is 6.06 :1 corrected for cam timing, altitude, and rod length..
Dynamic Boost compression ratio, reflecting static c.r., cam timing, altitude, and 16 PSI boost is
12.66 :1.
Overlap of 30.00 degrees With NVTC on.
Inlet valve closing of 67 degrees ABDC (after bottom dead center).
Dynamic compression ratio is 6.64 :1 corrected for cam timing, altitude, and rod length.
Dynamic Boost compression ratio, reflecting static c.r., cam timing, altitude, and 16 PSI boost is
13.87 :1 
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I dont dont belive those sheet - 
