88 dxhb mpfi obd0 y8swap, at first i had code 1 replaced mi o2 car idles between 3.5k and 4.5k on the warm up, stays at 3-3.5k when warmed up. i checced ecu 2day and now i got codes 1,6,10,13,20 timings correct tryed many ecus. does anyone kno what would cuase this TIA

 

Try searching for individual codes.

I'm willing to bet there is more then one cause of those codes being thrown.