Blacktop problem

[Michel H]

I have ae92 + BT too. My lambda is dead so idle is bit higher, +/- 1400rpm. If I give a little bit throttle then you can feel it's just running way too rich, sometimes the less throttle, the more "free" the engine runs. So in your situation, MAYBE the higher fuelpressure is making things worse ? How does it run at full throttle ?

Have you checked your ignition/timing ? I've set mine @ 10 deg. with diagnostic thingy connected. (this was still with functioning lambda though)
10deg. is VERY safe, but you'll lose bit power. 20v's are very sensitive with timing.

Also check your vacuum lines between your MAP sensor and your fuelpressure regulator.

Speed sensor shouldn't be a problem. I'm running without lambda and without speed sensor (purple/white cable) and no problems other then it just runs filthy rich