alfa5252

Can't hurt will try when I get a chance thanks mate

Apprectiate you're input, I agree the data doesn't look right, but it just must be how these certain injectors work. When I had 1150ccs the multipers were all factory stock and the issue still showed up.

Ignore the deadtime numbers being different as of course the spreadsheet is never right but this is the exact set, they flow 1710cc at 4 bar. Many ways to skin a cat end of the day LTFT is good and car drives well. Apart from this issue of course

Yes you're right, they're just changes i have made chasing this issue. Does it with them on or off. Injector data probably looks wrong for 1700cc at 4 bar but its correct and the car runs great. Trims are within 2-3%. They are xspurt injectors and data supplied for slopes has not been changed.

Yes so file posted is pretty stock and still did it. Nothing out of the ordinary changed. Ive tried with and without flex fuel enabled. Stoich is correct.

Torque source never goes into torque truncation, apart from tip in/tip out and transmission modulation it remains driver demand. This barebones file with no custom operating systems still did it. Commands .70-.80 for a while after a half throttle 2-5psi squirt.

Has happened across two sets of injectors 1100s and 1650s. Fuel pressure acts normal too. It is commanding richer for whatever reason just no reason so far.

Nop all reading as per normal before, during and after. Load over 1.1 making a couple psi of boost.

Ok, none of above changed anything. Spoke to Mick Egan his problem was different and did not last any where near as long. Commanded final lambda floats between 0.70 and 0.80. for around a minute before this issue resolves it self and LTFT stays 1.0 and in closed loop fuel source. Could there be something hidden to do with massive pressure difference between Intake Air Pressure sensor and Map sensor?

Apprectiate your help Roland, Closest i can find is auf11247 Max time an A/F excursion can be active to test d.s. EGOS 20 Secs with related scalar auf12263 LAMBSE to command while forcing an A/F excursion to force the d.s. EGO sensors r which is 0.85. auf11249 Time to ramp bank1 rich and bank2 lean during the KOER EGO test. 20 Secs I've also spent time searching key words on this forum and a couple other ford related forums with no luck.

I orginally thought it was some sort of temperature issue, so disabled all protections cat, exhaust and turbo, and it still does it. Logging the temperatures they are all well below where factory temp protection would come in and even further from where i have moved it too. And to back this up pull after pull on the dyno it never comes up even when the temps increase. This issue only appears after half throttle, couple second pulls. If it was going into this temperature protection mode would it not show up in the data logger?

Hey all, A weird issue that is doing my head in. Giving the car a half throttle squirt getting into some boost but not full throttle, then backing off, the air fuel ratio returns to 14.7 after tipout however quickly drifts off to 10.5 and stays there at all loads-idle, accelerating, cruising. This rich afr lasts for around a minute then returns to stoich. Now on the logging during this period I can see injector ms has definitely increased but nothing seems to trigger/change during this rich condition. The fuel pressure remains constant and is not sticking high. Fuel source remains closed loop the whole time. Torque sources remain driver demand. Short term/Long term trims are close enough to 1.0 all the time but during this period the short term winds out to 0.70-with no reason why, then a minute later its back to 1.0 and car is no longer rich. Seems to be the only thing in the log changing during this period. All vitals/temperatures read as normal. The car misfires during this period as its so rich. Flat out back to back dyno runs or drag strip runs this issue never shows it self. Literally only with squirts of less than full throttle. Any ideas?