My question is, if you didn't notice it before, what's the big deal now? And why are you letting your buddy, who doesn't drive your car every day, get in your head with rediculous sentiment. Obviously nothing is wrong with your car. And the way you get around in traffic.
If you launch your car at higher RPM's it's going to wear stuff out faster. No way gettig around it. Just keep doing what you are doing and you will be fine.
And if you are Coming off at 3k, your revs will drop And you will not be in the boost until it they come back up, your buddy doesn't seam to get what turbo lag is.