soundbalt

hey guys I installed my wide band gauge and noticed something today. I sit about 14-15afr at idle and when i rev up it only really goes down to 13 unless i really floor it and i can get it into the mid 12's occasionally. I was under the impression our cars should sit between 11-13 afr. Has anyone else had this situation when installing their a/f ratio gauge? i plan on supercharging my 2.2 in the next 2 weeks. I have all the parts collected/shipping in this week. I would like to make sure nothing is wrong before installing, i have a new tune and a new maf sensor for the install, but could a dirty tb or anything cause the car to run this lean? I just wanna make sure im ok b4 i do the swap to save myself from detonation of the engine or other problems when i supercharge.

mexi_loco

iTrader: (7)

1. Factory afr for any vehicle is about 14.7:1
2. Don't do anything else to your car. anyone willing to over-rev their is bound to do something else that's worse.

zrated89

iTrader: (15)

itll be stoich at idle its under wot that you want a richer afr. When the motor has a load on it

soundbalt

ok so then it is normal, it sits right about 14.7 under idle, and then goes to about 12.5-13 at wot, i am not over reving the engine i mean its at that at about 6k rpms. The engine will be supercharged in 2 weeks should i expect it to go to about 12 a/f? I am haveing vince tune it at trifecta

zrated89

iTrader: (15)

since youre na right now thats why you have a leaner afr then the lsj's do. When you go boosted i would reccomend a 11.8 afr at max.

drumrush

iTrader: (8)

how is his leaner than an lsj? 12.5-13 isnt lean at all

mexi_loco

iTrader: (7)

that should be at WOT. Even lsj's are stoich at idle.

MadBrad

What year model is your car? If 07 up. I would recommend finding an experience tuner with HPT.

zrated89

iTrader: (15)

you guys need to read he said at wot right now thats what hes at. I said the a factory lsj is richer because its boosted read the thread

again read what i posted i told him stoich at idle is good then he started talking wot afrs

mexi_loco

iTrader: (7)

i didn't quote you because you were wrong. I quoted you so the dude above what you quoted me could re-read it along with what I said.

soundbalt

lol relax guys, i got a 06 2.2 l61, my only question is when i do supercharge should i expect it to be at stoich at idle or what i expected which was 12-13 at idle and 11.5-11.8 at wot

zrated89

iTrader: (15)

youll have to retune the car all over again to achieve the desired afrs. If your going with trifecta than vince will do what he does

05Slowline

iTrader: (2)

lol dude go google air to fuel ratio or something it should always try to hit 14.7 at idle and at wot depending on what the setup is it will go richer and on decel / crusing they will go lean/ fluctuate....

zrated89

iTrader: (15)

hope youre talking to the op

05Slowline

iTrader: (2)

obviously lol

zrated89

iTrader: (15)

figured just checking