Pepijn

Hi all, I've been trying to finalize my Megasquirt 2 V3.0 installation for some time now. Everything is wired up, giving good values and cranks within a second. My setup is as follows: 280ZX N/A Megasquirt 2 V3.0 (fuel only setup) 240SX TPS AFM removed No additional mods Ran fine before removing the original ECU I also have a wideband O2 sensor, but can't attach it near the block since there is no bung and installing a new exhaust system is out of the question since the car resides in an underground garage. The first noticable problem is as follows: rough idling around 850-1000 RPM. The MAP sensor is also very wavy, with a worst-case amplitude of 15+ kPa. Furthermore, when I push the throttle, it feels like the engine almost stalls, but then the RPM increases. When I release the throttle at 'high' RPM (~3000) I hear some popping, which could be a backfire? I have searched and searched but couldn't find a clear answer on what is causing these symptons. I hope you have some ideas on where I could look for problems. The log attached shows the last run and the .msq is also included. CurrentTune.zip 2016-06-25_13.25.26.zip