dr20t wrote:That's friggen cluey but simple !
What happens in closed loop though, where you're targeting stoich? You can't simply increase maf output for corresponding voltage by 30% in sub 80g/s ranges could you?
By multiplying injector pulsewidth how do you then compensate for hysterisis on tip in and other deccel characteristics though? Does it switch to another mode or are you assuming voltage drops and thereby increases dead time?
Also, how do you then account for knock control strategy then, if your Iam is increased to 2.0 based on kca advance being manipulated. What happens if ecu goes into rough correction when you switch maps back to 98? Will it not be targeting iam of 2.0 again and thus constantly using kca to try (unsuccesfully) to get there ?
Closed loop is the primary table so on E85, the E85 table adds fuel while the closed loop is being referenced in primary thus simulating the injector size change thus keeping good fuel economy and being able to tweak E85 cruise independat of MAF by tweaking fuel table. So too rich on cruise, just pull some fuel back from say 30% additive to 27% etc
E85 uses stock tip in values for the inj size of 98, as you dont need to flood the chamber and put out the fire so to speak although the tune can be set to have the E85 as a final pulsewidth multiplier rather than just an Open Loop multiplier.
FLKC still uses normal KCA at IAM 2.00 or even at IAM 1.05, since the tune self blends from E85 to E70 right down to E10 as required. E85 timing advance is an additive same as IAT compensations
