Fastest 200sx 1.6 ever

With modifications such as(Top of the line), Cold air intake,voltage stableizer,cams,lifters,springs,plug n play performance chip,loosing some weight,ect. I have recieved big gains in Hp and tourque. My 200sx 1.6 is now much faster than most built SE-R's and just about any Civic you can think of. I had just one last thing to do. I advanced the timing to 17 degrees. My question is: When I advanced the timing on the car I expected to have to adjust Idle speed, however, there was no change in its idle speed. Is this normal?