Per Jim Wolf:
A11-A42 G41 89 240SX N A F S13-KA24E 9.1:1A11-B03 G49 89 240SX N A F S13-KA24E 8.6:1C11-B08 G54 89 240SX N A F S13-KA24E 9.1:1A11-B16 G03 89 240SX N A F S13-KA24E 8.6:1A11-B16 G12 89 240SX N A F S13-KA24E 8.6:1A11-B16 G17 89 240SX N A F S13-KA24E 8.6:1A11-B99 G54 89 240SX N A F S13-KA24E 8.6:1A11-A44 G43 89 240SX N A C S13-KA24E 9.1:1A11-B05 G51 89 240SX N A C S13-KA24E 8.6:1C11-B10 G56 89 240SX N A C S13-KA24E 9.1:1C11-B13 G59 89 240SX N A C S13-KA24E 8.6:1A11-B18 G05 89 240SX N A C S13-KA24E 8.6:1A11-B18 G14 89 240SX N A C S13-KA24E 8.6:1A11-B18 G19 89 240SX N A C S13-KA24E 8.6:1A11-C01 G56 89 240SX N A C S13-KA24E 8.6:1A11-A41 G40 89 240SX N M F S13-KA24E 9.1:1A11-B02 G48 89 240SX N M F S13-KA24E 8.6:1C11-B07 G53 89 240SX N M F S13-KA24E 9.1:1A11-B15 G02 89 240SX N M F S13-KA24E 8.6:1A11-B15 G11 89 240SX N M F S13-KA24E 8.6:1
http://jimwolftechnology.com/wolfpdf/ECU-ID.PDF
The low compression thing isn't what I'm concerned about. I'm just wanting to know if the idle issues are enough for some people to swap back to stock.