A good add on tothe LC-1 controller is a SSI-4 from Innovate. You can monitor other sensors..ie tps, boost sensor,rpm and even vehicle speed. i had one installed on my other turbo car and its very easy to set up..it also has 5v outputs for additional sensors if say you want to install a IAT sensor in the intake plumbing. I beleive they are about 120.00 bucks and they are a daisychain install
to the LC-1 and also the LM-1. As for irratic sensor readings I would look at doing a free air calibration once and a while. Decel will give you over 20 afr readings but not sure with CIS because of the possible fuel dump on decel
Chris
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