Port Injection 2.0TFSI
Posted: Tue Apr 11, 2023 6:38 pm
Good afternoon guys, hoping for some direction here.
I just finished 2 very similar 2012 Golf Rs, both running S8 ECUs. One is direct injection only, Precision 6266, upgraded LPFP and HPFP, and upgraded direct injectors on pump gas. That car was no issues to set up and get dialed in (with the normal TFSI low-pressure drop up top due to internal HPFP restrictions).
The second one is where I'm going in circles. This car has a GTX3584R, upgraded direct injectors (roughly 1080cc), ID1300x port injectors, upgraded returnless fuel pressure regulator (set to the factory 5 bar running pressure, also running a boost reference), camshafts, upgrade HPFP and LPFP, and currently running an E50 blend (flex fuel sensor has been installed). I've set up the secondary multiplier for the injectors, secondary opening times as per the ID data sheet, as well as set up the secondary load injection time tables in open-loop mode on the dyno to match my cll targets before enabling closed-loop operation. I'm not running blend tables (yet) and have the secondary load injection blend table set to the default 100% (this car will only see E50 for the time being).
Currently, I'm balancing between 2 issues:
1. When the car is in DI mode only, fpp drops quickly (as expected) and causes an fp limp. This is normal and what I'm hoping to work around with the port injectors. Proper monitoring is also an issue due to the low-pressure sensor being inside the HPFP after the restriction.
2. When I blend in the port injectors, I quickly lean out up top. The more port I add, the faster the lean issue comes in.
This is my first time setting up port injection with Syvecs and I'm clearly missing something. I've gone through the manual multiple times, as well as watched every Syvecs Help video (including setting up port injection twice) and browsed all areas of the forum related to direct injection. Perhaps I've been staring at it for too long. I'll attach the most recent log for review, but if there are any questions the log doesn't answer please let me know! Running sw version 1.699
Regards,
Bill
I just finished 2 very similar 2012 Golf Rs, both running S8 ECUs. One is direct injection only, Precision 6266, upgraded LPFP and HPFP, and upgraded direct injectors on pump gas. That car was no issues to set up and get dialed in (with the normal TFSI low-pressure drop up top due to internal HPFP restrictions).
The second one is where I'm going in circles. This car has a GTX3584R, upgraded direct injectors (roughly 1080cc), ID1300x port injectors, upgraded returnless fuel pressure regulator (set to the factory 5 bar running pressure, also running a boost reference), camshafts, upgrade HPFP and LPFP, and currently running an E50 blend (flex fuel sensor has been installed). I've set up the secondary multiplier for the injectors, secondary opening times as per the ID data sheet, as well as set up the secondary load injection time tables in open-loop mode on the dyno to match my cll targets before enabling closed-loop operation. I'm not running blend tables (yet) and have the secondary load injection blend table set to the default 100% (this car will only see E50 for the time being).
Currently, I'm balancing between 2 issues:
1. When the car is in DI mode only, fpp drops quickly (as expected) and causes an fp limp. This is normal and what I'm hoping to work around with the port injectors. Proper monitoring is also an issue due to the low-pressure sensor being inside the HPFP after the restriction.
2. When I blend in the port injectors, I quickly lean out up top. The more port I add, the faster the lean issue comes in.
This is my first time setting up port injection with Syvecs and I'm clearly missing something. I've gone through the manual multiple times, as well as watched every Syvecs Help video (including setting up port injection twice) and browsed all areas of the forum related to direct injection. Perhaps I've been staring at it for too long. I'll attach the most recent log for review, but if there are any questions the log doesn't answer please let me know! Running sw version 1.699
Regards,
Bill