The air bags in the back, with medium pressure ride about the same as springs really. The front airstruts are a different story. It'* a stiff banging bumpy ride you trade for cruising "sexy" and being able to slam in all the way to the ground at the gas station. And I do mean I can hit the ground with all four. Right now the car is back to OEM suspension, The banging wore them out in 2 years. It' an expensive style choice. I am going to rebuild them with new cartridges, but right now rebulding my Ram 3500 is taking all my cash.
With the rear bags jacking the rear up stiif and high and the fronts almost touching the ground, Yes performance is alot better and helps keep the wheel spin to a minimum. Especially when spraying nitrous.
The gauge is actually in the vent. It came with the digital air pressure minitor kit. It shows tank pressure and the pressure at all 4 corners. It was luck that it was the same size as the guts I removed from the left side of the vent.
Thanks for all the compliments. I really dig the car and wanted top personalize it. Spent way to much money, so every thumbs up helps. Considering I bought it new, and in the first 4 months did all this. I could have bought a CTS-V Series. But it would be a plain one. ROFL!