FITECH EFI TUNING tips, info sharing, ideas, settings, etc...
Update: Changed dfco cutout and return to 32 and 35 respectively.. Got some advice from a guy on the Chevelle forum ( fitech info). The decel backfiring in the exhaust is from having too much fuel when backing off the throttle.. seems to have worked well. It now cuts the fuel out earlier.
Took the side of the throttle body off last night to check my o2 sensor wiring, yes, was still having some fault codes 134 and 105. Checked continuity of the 5 wires in that harness and Could not find any visual issue.
The wires that exit out the back,travel along where the red line is, a channel on the throttle body. They were bunched downward close to the linkage as shown in the red circle and i "think" under hard throttle the linkage may have been pulling the wires a bit. I didn't find any cuts or anything but who knows? Seems the wire was very close to part of the throttle linkage, so i repositioned it. Will see if that fixes the glitch.. Undid the four bolts holding the ecu in place on the front and moved the plate out a 1/4 inch, but there is no way I will be able to take it right apart. If my o2 sensor keeps throwing the code, it will have to get sent back to California for them to check. :( That will have to wait until winter.
Also adjusted the secondary linkage a wee bit, as the secondary's were not moving at the exact time the primary were.
It will go back on tomorrow and see if I put it back together correctly LOL
Ken
Update: Changed dfco cutout and return to 32 and 35 respectively.. Got some advice from a guy on the Chevelle forum ( fitech info). The decel backfiring in the exhaust is from having too much fuel when backing off the throttle.. seems to have worked well. It now cuts the fuel out earlier.
Took the side of the throttle body off last night to check my o2 sensor wiring, yes, was still having some fault codes 134 and 105. Checked continuity of the 5 wires in that harness and Could not find any visual issue.
The wires that exit out the back,travel along where the red line is, a channel on the throttle body. They were bunched downward close to the linkage as shown in the red circle and i "think" under hard throttle the linkage may have been pulling the wires a bit. I didn't find any cuts or anything but who knows? Seems the wire was very close to part of the throttle linkage, so i repositioned it. Will see if that fixes the glitch.. Undid the four bolts holding the ecu in place on the front and moved the plate out a 1/4 inch, but there is no way I will be able to take it right apart. If my o2 sensor keeps throwing the code, it will have to get sent back to California for them to check. :( That will have to wait until winter.
Also adjusted the secondary linkage a wee bit, as the secondary's were not moving at the exact time the primary were.
It will go back on tomorrow and see if I put it back together correctly LOL
Ken
