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5VZ Turbo/FIC tuning/O2 trickery theory
A little back ground. I have a '98 4Runner 5vz, auto, 4x4. I am turbo utilizing the FIC6 for tuning. So far everything has been going well, no major issues. I had a thought and was curious if anybody here has had experience with this. The ECM is always looking for a "close to zero" fuel trim which is why in the FIC6 you have to adjust the o2 map AND the fuel map to try to get that close to zero trim while richening up in boost, but... What if I were to get the URD O2 simulator (I would be deleting the cat). The simulator tricks the O2 into thinking the cat is fine, thus fuel trims are good... So, Would I be able to install the O2 simulator then be able to only adjust the Fuel table in the FIC? Since again, fuel trims will be tricked into always being good.
Essentially I feel like it would be easier to dial in my tune if I didn't have to use the O2 table.
What do you guys think?