running rich
Just finished up install yesterday, its running super rich and will not idle. AFR will not come off of 12.2 there fore I cannot get it to 170 to even try to set iac fuel pressure is at 58-59 on FCC 2.0 . Ive pulled and replaced the plugs and even changed out to the delco temp sender . Any ideas would be greatly appriciated . This is the 2x4 650hp model.
Is the target AFR moving around? If not, you may have some electrical interference and/or ground issues. What does your RPM say on the handheld?
Here are a few tips.
1. Shield the blue wire if not using timing control. Ground the blue wire if using timing control. Here is a link for shielding. https://fitechforum.com/fitech-efi-tuning-forum-2/topic/shielding-the-blue-tach-wire
2. Run a 2 gauge ground from battery to block. 10 gauge grounds from battery to frame and from battery to body.
3. Run spiral core plug wires and resistor spark plugs. In other words no race wires or plugs.
4. Keep all Fitech wires away from coil and ignition related components. Plug wires, distributor, etc.
Got it squared away , reset hand held and found a small leak at the header collector . Runs like a champ now. and also updated the software a few mins ago , thanks for the files and help.