I've got a B16A2 in my '00 Si, and i just replaced my timing belt, plugs, wires, head gasket, and put in GSR cams. I put these cams in b/c my stock ones were stolen when i had the motor out at the shop. Anyway, to the topic...

I've been driving it, just like normal, it idles a little rough, and i noticed some hesitation when accelerating....not much, but a lot less than it used to. When I'm sitting still, the car has minimal shaking and it idles low.

I know this sounds stupid, but I've done timing belts and head work before, so i've rechecked all the main things that I thought it could be (i.e. timing marks off, plugs, wires, firing order) and I still have no clue what it is.

Any help would be great