Bouncing WB readin...

[Naf]

Ok, i have been tryin to tune my Tahoe with an LM7 engine. I installed a ls6 cam and Ls6 milled heads...

I am startin to get the engine to open up, but my AFR isnt a nice constant line, not to mention once it warms up the AFR goes from 14.4~15.0 to 15.5...It bounces from 13~21 all the time, while in lite throttle, to heavy throttle. While i am at WOT it donesnt jump as much but the line still isnt smooth....My Cadi was tuned by a pro and the line is MUCH better then mine with the exact same setup for the WB.

I have attached a copy of the tune as well as the Logs for comparison.

[ls1vt209]

Is the sensor new, old, damaged etc?

[Naf]

brand new lc-1 sensor and calibrated.

It has me baffled, for it jumps to super lean

[mr.prick]

in my experience, when AFR spikes lean then goes back to normal
like yours is doing it has been the sensor.

i did not watch your log all the way through but,
does the car feels like its fuel starved for that second?
does it surge at that moment?
one way to know for sure is if the sensor is to

i just had to replace mine
at WOT i saw AFR go super lean, the car pulled
and had no KR or acted at all like it needed fuel.

i have been getting only 1 year out of the Bosch 17014 sensors.

also you might want to use the serial connection if you are using the V2.

[Naf]

The car continuously pulled, no hesitaition...

I also notice something when i installed the new o2 sensor...It didnt get as hot as it did the first time. I think the controller is my problem...I will buy a new one and plug it in...

Electronics are always a headache in trouble shootin...You never know when they go bad...