ascastil

iTrader: (2)

Cmon, help me out! Monitored the O2s in my stock LS1 and they flipped voltage quick. Compared to my LT1 with a 228/234, .610, 108, the O2 readings are quick. The LT1 sensor voltages seem to hover on a lower reading then hover on a higher reading, sometimes in between. Normal on a cammed car?

96capricemgr

iTrader: (1)

Don't worry about the voltages so much, the LT1 pcm and ALDL are slow compared to LS1 stuff. How are the fuel trims?

Slow switching could indicate the sensors are dying but I would pay attention to the trims first.

ascastil

iTrader: (2)

Ok thanks. Ill do some driving around and report back.

ascastil

iTrader: (2)

Well stft are different bank to bank. Around -10 on one and sometimes as high as -20 on the other. Switched o2s from side to side same thing. Even grabbed an ac delco o2 laying around and tried that out, same thing. Lots of stumbling at low rpm while driving.

fbody_brian

is this an OBD2 lt1 pcm? I thought a 24x conversion required an ls1 pcm.

Rob94hawk

iTrader: (1)

It does.

fbody_brian

so the statement " the LT1 pcm and ALDL are slow compared to LS1 stuff" doesn't really apply here does it?

Doesn't the OPs sig say 24x?

Rob94hawk

iTrader: (1)

It does say that. That's why I'm subscribing. I'm waiting for those who have tuned an LT1 with a LSX pcm to chime in.