my fuel economy dilema

[AlexCim]

well, i have the jaycar EBC installed, running 7ish psi most of the time. Its 100% all load points, but i still find it to stay off boost (2.2k under easy load is 0psi)

now, i thought it could be the oxy sensor, which causes my shitty fuel economy. i currently get about 300km out of 65lt. Drive like a woman most of the time, DEFINATLY keep below 4k most of the time.

Anyway, o2 sensor... 170 ex jp, 2 week wait.

Now i have a DFA here too and i am wondering, if i tune the dfa before i get the new sensor, will there be any issues when i install the new oxygen sensor after the dfa is tuned? i dont want to spend cash to tune/petrol for tune if im gonn have to do it again, i may as well get the thing done right from the start.

opinions please.

[emanuelt]

There are posts about o2 sensers which will save you more than half the cost, mine only cost about $80.

[Sydneykid]

well, i have the jaycar EBC installed, running 7ish psi most of the time. Its 100% all load points, but i still find it to stay off boost (2.2k under easy load is 0psi)

now, i thought it could be the oxy sensor, which causes my shitty fuel economy. i currently get about 300km out of 65lt. Drive like a woman most of the time, DEFINATLY keep below 4k most of the time.

Anyway, o2 sensor... 170 ex jp, 2 week wait.  

Now i have a DFA here too and i am wondering, if i tune the dfa before i get the new sensor, will there be any issues when i install the new oxygen sensor after the dfa is tuned? i dont want to spend cash to tune/petrol for tune if im gonn have to do it again, i may as well get the thing done right from the start.  

opinions please.

The lambda sensor only affects air/fuel ratios in closed loop (cruise, idle and constant throttle running). The DFA has no effect on closed loop running, so go ahead and get it tuned, stick the lambda sensor in whenever you like.