If you add more power you can keep up or be faster off the line but the VR6 will eat up an RS (low pressure turbo or not) on the highway. My 5psi RS is quick off the line but still isn't as quick as my Corrado SLC was (chip, cams & exhaust), and once I hit about 85mph the RS is a lot slower than the Corrado was. The Corrado would pull all the way to 145 or 150mph whereas even with a turbo I'm running out of oomph over 110 or so in the RS. I'd like to see what a cam and maybe some headwork would do for the RS, though, it feels like that is holding the power back.