Test valve springs

[VIN7]

Would anyone be interested in testing a set of valve springs that I just replaced? The are comp 980 with installed height of 1.71".

They would make the car nose over as soon as it hit 5000 rpm, and the car never really responded to increased boost ranging from 21 to 28 psi. I replaced with new 980s and the car pulls all the way to 5400+ now.

Thanks

 

[earlbrown]

That sounds about right. Seems comp moved their spring facility over to Mexico a few years ago and this became the norm. When these go limp get a set of PAC springs.