p901

Here are my specs: 1973 240z l24 engine N47 head MS2 2.88 (DIY Autotune) Relay Board NB O2 sensor (GM) Bosch High imp. red top 30lb injectors (Ford) Custom Intake manifold (Similar to Lonewolf) T3 turbo (Borg Warner) Compressor A/R? Turbine A/R 50 stage 1) Type 6 BOV 65mm throttle body (Ford) Crane xr700 (Megasquirt controlled) Just converted my 240z to FI and turbocharged. This is the second time that I tried tuning and have a few issues. Engine runs rich at idle and cannot bring the idle rpm down. The fuel pump pressure is set at 42lbs. The narrow band GM O2 sensor reads above .80v most of the time and occasionally drops to .2v Stumbles while accelerating. Would this be because of the acceleration bins not set correctly? Data log file shows small increases in acceleration shots that seems to have odd correlations with RPM ramps. 240z turbo.zip

The clearence between the intake of the throttle body and the distributor seems to close for a smooth transition duct to fit in. The gap is about 2".