My R33 is getting terrible fuel economy of 190-250 with 50 city trafic 50% freeway (190 driving normal, 250 driving miss daisy the whole time), and its really starting to give me the shits. Car has usual 200rwkw mods runing a PFC tuned by RE Customs
What I have done so far:
Made sure it was not my driving
Checked accuracy of fuel guage and speedo
Replaced 02 sensor
Cleaned AAC valve
Cleaned AFM
Got RE Customs to make sure the tune was spot on, they said it is now perfect, they checked for fuel leaks and found none, they said it would not be the cat because car is not down on power at all and drives very well.
The only suggestion the had was an injector(s) could be leaking (they noted the idle is somewhat rough) and this could be causing the problem.
So does anyone have any suggestions as to what else might be causing this problem before i spend the time and money getting the injectors checked.
Cheers