07 Mustang, Comp XE272 cams, Procharged, cam phasers going nuts above 4600rpm

[Jay@HAP]

Trying to figure this out. I used the supplied data from Comp for the cams. VCT error looks good till 4600 RPM. At that point, bank 1 tanks rich and the VCT error goes up to 15% or so. Bank 2 has errors, not as bad, but they are all over the place. I swapped WB's from side to side and verified Bank 1 is actually going rich at 4600. You can see on the dyno graph the power falls off some at 4600 but then continues to climb.

Engine has the Comp limiters installed w/ their valve springs.

Seeing about 17psi up top with some belt slip after 6300.

[f.creek-ranch]

its NA comp cams stage 2 vsr...maybe it helps a little

[SultanHassanMasTuning]

try to keep the car in open loop and test again...

[svtadam27]

Which valve springs 26113 or 26125? Any peoblems controling vct at idle? What oil pump do you have?

[MaximumVelocity]

Double chk the cam caps. Seen this issue before and turned out to be cam caps loose enough to cause oiling issues to cam phasers.

[f.creek-ranch]

no comp cam springs, they are junk.
eibach springs
org pump
no probs