Axelthered05

iTrader: (9)

Sorry in advance for the nube ?'s Im new to this, ok I just installed a wideband A/F gage in my cobalt, and I was wondering what people are seeing as the norm for our cars because their are times when I let off the gas or am just cruzing and the A/FR jumps to 20 and after a few seconds returns to inbetween 13-16,
Do our car normaly jump to lean?

BLAZIN07SS

iTrader: (7)

yes, DFCO(deceleration fuel cut off) shuts down the injectors on decel for a little. completely normal

ecot3c inside

iTrader: (11)

assuming your mods are in your sig, and the cobalt is n/a..... why did you get a afr gauge? tune soon?

Axelthered05

iTrader: (9)

Going to do a supercharger build soon

Axelthered05

iTrader: (9)

Thanks for the info

Axelthered05

iTrader: (9)

Is it posible to have the DFCO(deceleration fuel cut off) romoved or dampened with a Trifecta Tune?

BLAZIN07SS

iTrader: (7)

yes it is. doesn't really do anything except a **** load of popping and backfiring under deceleration and less fuel economy

Axelthered05

iTrader: (9)

so it would be beter to just keep it when my car gets tuned, I just want the safest A/F ratios when I go supercharged so I dont have detonation

XtremeJakeUC

iTrader: (1)

Yeah, this is completely normal and acceptable. My 2.2 is supercharged and when I let off the throttle the A/F goes extremely lean (20+) and there is no detonation or risk of detonation because it is no longer under boost.

springerdesigner

iTrader: (1)

same here.been answered and it's normal.

Axelthered05

iTrader: (9)

ok thanks for all your help guys hopefully this build goes beter than my turbo build from earlier this year