Syvecs Forums

I know this last post is coming up on a year ago, but I just want to address this for anyone who may be tuning the EA113 TFSI engine, with Syvecs or stock ECU. The issue that causes the fuel pressure drop is not a mechanical issue per se, but a defect in the design of the stock system. The internals...

Thanks Drew, but all of the issues were fixed once the fuel pump control was reversed.

So, as Peter was so kind to point out, the PWM control in Syvecs for the LPFP is inverted. I flipped the p component in reverse (adding up to 50% for positive error and removing up to 50% for negative error) and it's smooth as glass. Until now I didn't find any documentation that stated fuel pump co...

I've got fuel pump DC up to 75% now in the problem area, but seems to be dropping my fuel pressure even faster. Not enough pump? The LPFP in question is a Bar-Tek race pump rated at 800bhp, but not sure now. Lines are -8AN from the pump to the engine and -6 from the reg to rail and -6 as well from r...

That's a bit strange considering I have fuel pump closed loop enabled with a maximum duty of 95% and my target pressures populated to the same pressures I run on the stock MED9, but I will look through limiters maybe and see if I've missed something sneaky, a 20% correction limit or something. Base ...

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...

Nominal injection pressure is a reference "pivot" pressure that the ECU uses as an input signal for closed-loop pressure control, referencing it against the actual pressure. It's generally a rounded median number. Changing it will result in a modification of the closed-loop control and is ...