Originally Posted by Saabist
Originally Posted by Trav
The Trionic systems do not use conventional knock sensors but an ion sensing system and cant pull timing that much or that quickly to prevent detonation.
Quite a few people have used regular gas in these cars with no ill effects. Heck, I did it for a while when gas prices shot up in the U.S. for a period of time. Aside from adjusting timing (which is done on the fly for each individual cylinder), the Trionic system also controls turbo boost and fuel injection timing to avoid knock:
https://www.eeuroparts.com/blog/5436/tech-corner-saab-trionic-and-ionization-sensing/
For the system to work properly it is crucial to use the correct spark plugs, correctly gapped, as well as the correct OEM ignition cassette. The earlier red T5 cassettes are more expensive than the black T7 units. Therefore some people will use the T7 part in T5 cars. The car will run but knock detection is reduced by about 20%, so not worth the risk.
In any event that's getting off topic - the point is that the technology to avoid knock in turbocharged engines using low octane gas has been around for decades. I'd be very surprised if a 2011 Hyundai was not so equipped. Of course a malfunction in the system might well have left the engine exposed to destructive pre-ignition.
It makes no difference to me what someone runs in their car or not. I don't run cheap swill fuel in any turbo engine period. I have seen to many holes in pistons and piston damage from smart guys and experts in their own minds doing it.
Originally Posted by Trav
The Trionic systems do not use conventional knock sensors but an ion sensing system and cant pull timing that much or that quickly to prevent detonation.
Quite a few people have used regular gas in these cars with no ill effects. Heck, I did it for a while when gas prices shot up in the U.S. for a period of time. Aside from adjusting timing (which is done on the fly for each individual cylinder), the Trionic system also controls turbo boost and fuel injection timing to avoid knock:
https://www.eeuroparts.com/blog/5436/tech-corner-saab-trionic-and-ionization-sensing/
For the system to work properly it is crucial to use the correct spark plugs, correctly gapped, as well as the correct OEM ignition cassette. The earlier red T5 cassettes are more expensive than the black T7 units. Therefore some people will use the T7 part in T5 cars. The car will run but knock detection is reduced by about 20%, so not worth the risk.
In any event that's getting off topic - the point is that the technology to avoid knock in turbocharged engines using low octane gas has been around for decades. I'd be very surprised if a 2011 Hyundai was not so equipped. Of course a malfunction in the system might well have left the engine exposed to destructive pre-ignition.
It makes no difference to me what someone runs in their car or not. I don't run cheap swill fuel in any turbo engine period. I have seen to many holes in pistons and piston damage from smart guys and experts in their own minds doing it.
