Tuning for water injection: fuel, ignition, and EGT

[arthurtoo]

Originally Posted by dlheman

On my STI, I find 42% IDC (12 o'clock position) is a bit too late and choose to go for 10 o'clock which injects at around 25% to 30% IDC (I need to look at my HFS3 flow vs FIDC flow datalog). But I am using TMIC so injecting sooner is never a bad idea and I never saw any knock correction.

What is the value of you knock correction during the initial injection anyway? -1.4?

base on my datalogs injecting at 25%-30% FIDC is around 300-400rpm earlier. what benefits are to be expected for injecting earlier?

yes, the knock correction is -1.4 during the initial injection. few days back i tried advancing more timing where knock is recorded during initial injection, and its at 0 knock now. perfect!