Primary is def not bad. I just put a brand new toyota oe sensor in. I have an appt on the 9th to get it tuned. I finally found someone somewhat local that tunes aem. No offense to mike, hes a good tuner, and a good go to guy if u need anything done but there has to be a step were missing.

 

Your not going to get your fuel trims perfect in one short session - especially on the street. Either way good luck.

 

I wish you the best of luck!!

 

btw what slave version are you running? z107?

 

Im almost positive thats the slave version im running. Ill triple check that. I know i checked it when i first got my fic but i cant remember.

 

just throwing out an idea but try using z104.hex

 

A lil thread revival.... Come to find out, ive been runnin z104hex the entire time i was havin this issue, which i may add is still an issue. I flashed the fic w z107 as well as slappin the stock injectors back in for testing purposes. Trims seem to be holdin fairly well. Im not completely sure if it was the re-flash, my 550's or a combination of both, but well see what happens. Im thinkin a new set of injector dynamics may be in the cards for me in the near future or maybe sendin my dw's to get cleaned and flow tested.

 

I used Z300 on an 05-06 without an issue the other day. VERY weird.

Normally I use Z104 without a snag. Z107 has been documented to work on some tCs too.