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Title: Fueling 1.8t stroke e50 bosch 1700cc Post by: Kejsi on December 28, 2023, 10:19:51 AM hello i have a problem with injector adaptation. The engine is a 2 liter stroker me7.5 on e50 fuel without maf and used hack 5120 map. The problem is that I have very poor lambda at idle, while driving it is okey, wot same okey. After deleting the correction, the engine is at lambda 1 for a while and reaches lambda 1, only to have the short term correction jump up to lambda 1.3 after a few moments.
Krkte 0.03367 temin 0.2 tvub 12v 1, 14v 0.71 I am counting on the help of the group, many times you guys helped me :P Title: Re: Fueling 1.8t stroke e50 bosch 1700cc Post by: Kejsi on December 28, 2023, 10:35:49 AM I tried to do fkkvs correction but setting even 1.99 for idle range the problem still appears
screenshot of the current adjustments Title: Re: Fueling 1.8t stroke e50 bosch 1700cc Post by: _nameless on December 28, 2023, 10:36:52 AM I tried to do fkkvs correction but setting even 1.99 for idle range the problem still appears http://nefariousmotorsports.com/forum/index.php?topic=12361.0title=Title: Re: Fueling 1.8t stroke e50 bosch 1700cc Post by: Kejsi on December 28, 2023, 11:00:16 AM sorry already added, idle are at the end
logs witch active nolra Title: Re: Fueling 1.8t stroke e50 bosch 1700cc Post by: aef on January 02, 2024, 03:37:10 AM Tvub values according to ecumaster black software wizard
0280158827 8v 2,16 10v 1,59 12v 1,28 14v 1,06 16v 0,94 your krkte 0.03367 is most likely wrong. example calculation for 980cc only because i know they are petrol injectors and i can find the qstat value in a datasheet. 980cc * 0,670g/cc (bosch datensheet) = 656,6 50,2624 * 0,4940056583052142 (because of 2 liter stroker) / 656,6 = 0,03781 new KRKTE (working for me with maf and trims everything fine) calculation backwards with your 0.03367 0.03367 * 1700 (because i dont know the qstat of yours) / 50,2624 = 1,138 * 4 = 4.5 liter stroker this was only with stock fuel and e0 to e5 content. taking e50 into account with 20% bigger injectors 0.03367 * 1700 (because i dont know the qstat of yours) * 1,2 (because of 20%) / 50,2624 = 1,366 * 4 = 5.4 liter stroker start with a fkkvs all 1s and fix your krkte at first. i wonder how your car is starting with this current krkte value. Title: Re: Fueling 1.8t stroke e50 bosch 1700cc Post by: pitercsg on January 02, 2024, 04:37:27 PM It's not about the tune. Due to the lack of maf and running shitty alpha-n your IAT sensor is getting heat soaked -that's why it occurs only at idle.
Title: Re: Fueling 1.8t stroke e50 bosch 1700cc Post by: nyet on January 02, 2024, 05:29:59 PM alpha-n sucks ass. expect nothing but fueling problems unless you are always at the same temp/altitude/humidity.
Title: Re: Fueling 1.8t stroke e50 bosch 1700cc Post by: Kejsi on January 10, 2024, 05:36:40 AM It's not about the tune. Due to the lack of maf and running shitty alpha-n your IAT sensor is getting heat soaked -that's why it occurs only at idle. you're right, I use alpha n Can you give me the name of the map that I could use to make fuel corrections based on the IAT sensor? Title: Re: Fueling 1.8t stroke e50 bosch 1700cc Post by: Kejsi on January 10, 2024, 06:04:32 AM Tvub values according to ecumaster black software wizard 0280158827 8v 2,16 10v 1,59 12v 1,28 14v 1,06 16v 0,94 your krkte 0.03367 is most likely wrong. example calculation for 980cc only because i know they are petrol injectors and i can find the qstat value in a datasheet. 980cc * 0,670g/cc (bosch datensheet) = 656,6 50,2624 * 0,4940056583052142 (because of 2 liter stroker) / 656,6 = 0,03781 new KRKTE (working for me with maf and trims everything fine) calculation backwards with your 0.03367 0.03367 * 1700 (because i dont know the qstat of yours) / 50,2624 = 1,138 * 4 = 4.5 liter stroker this was only with stock fuel and e0 to e5 content. taking e50 into account with 20% bigger injectors 0.03367 * 1700 (because i dont know the qstat of yours) * 1,2 (because of 20%) / 50,2624 = 1,366 * 4 = 5.4 liter stroker start with a fkkvs all 1s and fix your krkte at first. i wonder how your car is starting with this current krkte value. with this setting, the car starts well at idle, after warming up, the mixture is lean while driving as above, FKKVS correction, but the long-term correction reaches -20 percent I set a lower shortcut value 0.032333 and continue testing what bothers me the most is the lack of MAF, unfortunately I have to bypass it, currently the engine is on a TFSI crankshaft, but soon it will be built on a tdi crankshaft, with a gridle plate and I would like to reach 750 hp, then the MAF will definitely be redundant calibration process completed, thanks to everyone for the advice long-term corrections idle 0.38% partial -3.9% |