[richs347]

I threw out the coil idea because it gets worse at high rpm. Thinking at idle you get a good charge but maybe having a dying coil that doesn't deliver at high rpm. Thats a simple check with a volt meter - the specs are in the haynes manual. I figured if you had already done the timing chain, you may have done the compression check. How old are the 02's? Again, just guessing with limited info.. How many miles on the car and is it a stock 5.0?