High Altitude Dyno / Z1 400 hp kit notes

[SurfDog]

I have dyno results From sea level (ZcarGarage in San Jose California) and at 6000 feet (MAC Autosports in Parker Colorado.)

Stock dyno (base/reference dyno) in California: 293.6 whp/248.27 q
after JWT pop chargers, Berk HFC/CBE and tune: 318.20whp/265.33 q
Total improvement: +24.6whp/+17.06 q

At 6000 feet with tune (and same mods): 299.03 whp/???.?? q
At 6000 feet with Z1 400hp kit(Berk CBE)/tune: 317.84 whp/251.13 q
Total change: +18.81whp/???.?? q

Conclusion. Going from sea level to Colorado (5-6000 feet) you lose about 20 whp (roughly 25 crankcase hp)

also:
JWT pop chargers and Berk HFC/CBE gained me about 25 whp and Z1 400 hp kit did about 19 whp better still.

I'd guess Z1 kit total gain is +43.4 whp with humble gains in q due to removing cats (back pressure)

I just thought it was interesting.

Z1 kit (at sea level) would be (best guess) about 340 whp assuming 18% drive-line loss about 401.2 crank hp.