I tryed this today and all was going well, i adjusted the idle with the brown bit unplugged (i have a 1989 R32 Skyline) and then plugged back in, revs were nice at 1000rpm then i turned her off, started her up and instantly the revs were up around 1600rpm. i then tryed again this time with the TPS disconnected and then re-connected and the best i can get is about 1500rpm (including adjustin the ECU idle).
Seems to backfire and burble on engine breaking a lot more but still feel smooth when driving
Could this be leaks or should i now try the IAC valve under the throttle body?
initial reason for cleaning the AAC valve was idle hunting and stalling which i still suspect to be a dodgey BOV but now i cant get the engine to idle how it used to (even if it was stalling).