I ran a cold/empty test for my 2008 Cadillac STS-V with Spectre CAI and an Amsoil eaau6065 filter this morning to have for reference. Today’s run was with the normal 2-3 shift at peak. [Click on images for larger versions; hit back in browser to return]
The comparison data is from “Rethink advance full cold 0531”.
Today’s run looks as expected. MAF peak at 60+ Lb/min and Delivered Torque look on target with previous cold runs in warmer weather. The SC inlet vacuum appears to run ~1.45 psi vs the ~1.3 psi we saw with the K&N filter.
Here was the HPtuner data at peak in 2nd gear:
The V was cool and almost out of fuel.
The Virtual Dyno run reads high Torque, Low HP:
I am uncertain how to interpret this relative to the other readings.
I include these dataruns to study repeatability and build info on my current setup. The key to tuning is to have a solid reference set to compare to.