I have attempted multiple times to scale the FIC 1220 CC injectors on my Evo 8 with the help of the data sheet and have failed. The car ends up being stupid rich at idle but in cruise it’s perfect. I have read multiple times the official Injector latency forum with no luck. I would sometimes get close to stoich in open loop but then when I test in closed loop the A/C throws off the scaling. Every time the compressor goes on the car runs 18 lean. Running on MAF.



The car is pretty much stock it only has a evo 9 turbo, studs, 320 fuel pump, Injen piping with maf, downpipe with catless and an ebc.

 

Any update to the scaling? Very little information about scaling and latency with these injectors.