Soo i have a 09 ss/tc like lots of other AMERICAN SUPPORTERS on this site!!!!! WWOOOTT.. anyways like i said 09 ss, and i hooked a new aem wideband up and i kinda figured it would be lean being stock tune for gas milage and all, but wow at idle im like 17 to off the scale, cruisin is perfect 14.5- 14.8ish, but WOT its about 12.0... im just wondering if this is nomal because im kinda scared to get on it bein that lean. also i have boost creep pretty bad after 5200 it goes to 20lbs and holds til redline.. thanks for all input FTW!

 

Yeah the LNF with direct injection runs about 0.5-1 leaner than the LSJ cars.

P.S., not to sound like a dick, but why did you add an AEM wideband. We have one stock. You just need a DashHawk, DashDaq or something to read it.

 

yea i no we do, but my buddy bought a new one because he couldnt fix his plx300, he ended up fixin it and needed a fmic so i traded him. saved me some money. cheap ebay ic

 

Sounds good.

 

Sell the wideband than and get a dashhawk/interceptor or dashdaq, the aem isn't needed.
And ya the lnf runs very lean, it starts of at 14:1 in the midrange and dips down to 12.8:1 at 5000rpm and up.

 

I have read that due to direct injection, the fuel is better atomized and cools the piston more than regular fuel injection.

Therefore you don't have to run the same amount of fuel to keep up.

I may be an idiot though