I have an 02' X (of the WR variety) with 22.5k. during hard acceleration (and I mean very hard, as in flooring it) around 4k rpms I hear a high pitch squeal (no its not the tires ). I thought it was the belts but I tightened them up today and it still does it. I may not have tightened them enough but im afraid to overdo it. Anyone here have a simmilar problem or know what the problem is? Thanks.