Summary:
After updating the FIC data to what Calibrated Success measured, I'm having worse fuel economy and my MAF g/s has gone up as much as 70g/s at WOT. Did I do something wrong?
Detail:
I originally requested a recommended injector here:
https://forum.hptuners.com/showthrea...ecommendations
I ordered this part based upon that thread:
https://fuelinjectorconnection.com/c...lb-ls2-l92-lq4
On May 28 020, FIC provided the attached file named "FIC440CC-42LBBOSCHLS1SCALEDHPT".
On October 12-14 2021, Greg & FIC began announcing the availability of fully characterized data:
https://www.corvetteforum.com/forums...aboration.html
On October 13 2021, Bob at FIC sent me the updated data, attached filename "440ccHPT_Plug_and_Play_Data_FIC_42lbLS1(6660) "
After applying the updates to the calibration, I noted that the new data didn't discuss what to use for the minimum & default injector pulse, nor for the short pulse limit. My old values were not OEM and I do not recall from where I obtained the data or recommendation to change them. Bob said to put them back to OEM. Greg said he leaves the short pulse limit at the factory 4.0 value and no need to change. Greg only recommends "lowering the min default injector pulse if you find that you are actually riding that limit during hot idle or cruise. Lowering it shouldn't hurt, though. Just keep in mind that some injectors get inconsistent at very short pulse widths and this value is intended to keep you away from that."
My concerns here are:
1) The large increase in MAF g/s has significantly reduced how much overhead I have remaining below the 512g/s MAF limit.
2) The reduced fuel economy in the same OLMAF mode
3) My MAF logs regularly show lean between roughly idle and 3500Hz after multiple adjustments, it seems as if its never satisfied. The data above that Hz has stabilized, albeit at higher airflow rates.
The "Oct21" tune is with the new data, the "03Oct" tune is with the old data. What do I log to determine whether I am "riding that limit" during hot idle or cruise? Other suggestions?