StefanoP
Member
Hello all,
due to self-confinement it has not been possible to make any progress of my A2s; the FSI managed to throw a tantrum anyway, breaking the ventilation fan's electronic control unit, so no A/C now until Audi ships the spare part, and thus I shall be able to have Steve's ECU installed as well. Anyhow yesterday I had to do get the FSI out to visit one of my patients at home (that's when I noticed the A/C fan didn't work) and noticed that the fuel prices have been dramatically slashed down to levels never seen since maybe 25 years. Unfortunately the 98/100 RON was not available so I did have to add half a tank of 95 RON to the 98 gas I had in my tank, and what a joy it was to see how little I had to pay! ? Needless to say there I did not feel any difference in performance of the FSI with the lower-rating gas. So please let me ask a couple of questions, maybe stupid questions but I'm sure that the collective knowledge of the Forum will help me understand.
First of all, how does the high-grade gas improves the engine? I understand that a higher-grade gas will allow the engine to run different spark parameters and be more powerful, but would it be harmful to use a lower-grade gas? Second question: now that I shall be fitting the modified ECU (Steve's), will this modification change the need to use 98/100 RON fuel? In other words, will this modify anything re the necessity of a higher-grade fuel? And, more important, does the use of a lower-grade fuel risk doing any damage to the FSI engine? I dont think so, but...just asking. Thanks a lot!
Stefano
due to self-confinement it has not been possible to make any progress of my A2s; the FSI managed to throw a tantrum anyway, breaking the ventilation fan's electronic control unit, so no A/C now until Audi ships the spare part, and thus I shall be able to have Steve's ECU installed as well. Anyhow yesterday I had to do get the FSI out to visit one of my patients at home (that's when I noticed the A/C fan didn't work) and noticed that the fuel prices have been dramatically slashed down to levels never seen since maybe 25 years. Unfortunately the 98/100 RON was not available so I did have to add half a tank of 95 RON to the 98 gas I had in my tank, and what a joy it was to see how little I had to pay! ? Needless to say there I did not feel any difference in performance of the FSI with the lower-rating gas. So please let me ask a couple of questions, maybe stupid questions but I'm sure that the collective knowledge of the Forum will help me understand.
First of all, how does the high-grade gas improves the engine? I understand that a higher-grade gas will allow the engine to run different spark parameters and be more powerful, but would it be harmful to use a lower-grade gas? Second question: now that I shall be fitting the modified ECU (Steve's), will this modification change the need to use 98/100 RON fuel? In other words, will this modify anything re the necessity of a higher-grade fuel? And, more important, does the use of a lower-grade fuel risk doing any damage to the FSI engine? I dont think so, but...just asking. Thanks a lot!
Stefano