NJFBOA - Home of New Jersey's Camaros and Firebirds - View Single Post - 5th gen Fuse Pull: Low Octane Fuel Fix For L99 and LS3. Reset Fuel Map for High Octan

band77one · 08-20-2011, 12:26 PM

the ecm is detecting the wrong octane fuel and retarding the system because, apparently, dealers do not want to pay for the premium fuel and are putting regular fuel in , then the ecm is retarding and cars arent running they way they should. the ls3 motors get a smoother idle once it happens but apparently not many ls3 cars are reporting it. he said leave the 2 fuses out overnight, put them back in and it should run a lot better. supposedly L99 cars are pretty slow when this happens.

08-20-2011, 12:26 PM	#6
band77one 15 Second Club Join Date: Mar 2005 Location: camden county Posts: 1,122 iTrader: (1)	the ecm is detecting the wrong octane fuel and retarding the system because, apparently, dealers do not want to pay for the premium fuel and are putting regular fuel in , then the ecm is retarding and cars arent running they way they should. the ls3 motors get a smoother idle once it happens but apparently not many ls3 cars are reporting it. he said leave the 2 fuses out overnight, put them back in and it should run a lot better. supposedly L99 cars are pretty slow when this happens. Last edited by band77one; 08-20-2011 at 12:29 PM.