My friend's gn wasn't idling, would give it some gas and sensor readings were way too high....reseated the ATR chip and then car was fine. Idled at 800 rpm, tps was at .44, iac was around 45, int and blm were about 128. Then the same issues resurfaced a few weeks ago. Again, car wouldn't idle, sensor readings were crazy (like iac was about 100, blm and integrator was 150). So tonight I tried reseating the chip again and that didn't help. I changed out the ecm and used the same ATR chip and now it runs good again. What do you guys think? Bad ecm?