charles28 131 Report post Posted January 21 My HPFP was getting dodgy, error codes and rough running from cold, rail pressure drops even at idle now and then. It could however maintain rail pressure at high rpm, but.not aswell as it should have. Yesterday I replaced it with a marelli magneti branded hpfp, I now have the opposite issue. My cold start, idle and cruise rail pressure looks good. However at wide open throttle the pressure crashes over 5000rpm. See log: https://datazap.me/u/charlesb/rail-pressure-crash-map-1?log=0&data=3-4-21-22 Has anyone used this brand before? Quote Share this post Link to post Share on other sites
Smackiee 15 Report post Posted February 7 (edited) Interested to know if your issues are fixed? I was looking for some feedback on the Marelli Magneti branded hpfp. To me, it looks like your LPFP takes a little dump and goes below 72PSI. Edited February 7 by Smackiee Quote Share this post Link to post Share on other sites
charles28 131 Report post Posted February 9 the new HPFP was a dud. Appears Marelli HPFP is garbage. Although I suspect the one I got was counterfeit as it looks the same as the aliexpress ones other than a Marelli sticker. Quote Share this post Link to post Share on other sites
