Is your max an Auto? If it is, then that's why there's a little delay. Most of the power is in the mid to high end RPM range, so for an auto, it feels like a surge..... but maybe that's me. I have the stick, so I can just slam the clutch in at 2 and 1/2 and miss that low end stuff. Also, did you lower the car or something, b/c there is another question in this forum that dealt with that (The guy had that same noise and he fixed the problem due to the car being lowered). Also, the humm from your brakes might be from a frozen caliper. Your acceleration could be affected by that also. I hope this helps.
