The motor is fairly close to stock. Just has an exhaust, pod filter, crappy boost controller and the atmo BOV I removed yesterday.Thanks for the photo, it confirms at least that my solenoid has been removed. Would that unplugged solenoid be causing problems with the ECU? The instructions I found for the boost controller state:
1) INTERNAL WASTEGATE SETUP
• Allow the engine to cool down before installing your boost controller
• Locate the pressure source port and the wastegate actuator port on the turbocharger assembly (refer drawing 1)
• Remove the factory boost control solenoid if fitted from the boost pressure supply port while leaving the solenoid connected to the
ECU
• Install the DSBC Tee piece in the wastegate pressure line with the wastegate arrow pointing towards the wastegate actuator
• If your wastegate actuator has additional ports, these will need to be blocked
• Secure all silicone hose ends with hose clamps
• Mount your boost controller bracket onto the vehicle, and then attach the boost controller onto the bracket with the supplied screws
• Make sure the boost dials are turned completely anti-clockwise before making adjustments.
Misbehaving = feels like it loses a cylinder intermittently(?) under boost. Sounds like an old carby breaking down spark (same fluttering noise) and the power does not come on smoothly, it hesitates and carries on. Only have the standard boost gauge and I don't really know where stock boost should sit on it to be honest, I have wound the turbosmart controller down so full boost is just under 350mmHg on that gauge, I figured that should be lower than stock if anything, and eliminate ECU R&R spasms from the picture..?
This engine does not get driven around on boost a lot, so 16 is, to me, absurd. It did 9L/100km on a 200km highway trip with a mountain drive in the middle, so that side of things is OK. Makes no sense to me, I think I need to find a tuner up here who knows Skylines inside out or find/buy some tuning software and have a crack on my own - I'm sure there's enough online support to get me through something like that.
Not that I know of; and I have replaced the O2 sensor on the dump pipe, yes.