I bought a 1994 hatch with a SOHC VTEC ZC. It has a few bolt ons (i/h/e) but came with a P06 ecu. It ran a little rough when I bought it (and never engaged the VTEC), so I had it chipped and converted to a VTEC P28. Using Crome, I flashed a few base maps (started with a D16z6) and then tried the P29. It runs better, but still rough. Does anybody know what ECU the ZC is supposed to use? I read a few places it was a PM7, then P07...then someone said to run the stock z6 maps...but I think they run in limp mode. (The VTEC wiring is all there and the O2 sensor has been changed to a 4-wire) Can anyone tell me what might work...the engine is stock other than the header/intake/exhaust.