Conway_160

iTrader: (1)

So I finally got the car moveable after a very very long time of setting or acting funny. It still needs a tune, so I know that some of the problem but when I driving and give it some gas driver side bank afr's will stay around 12'ish and the passenger side bank will shoot up to 14-16.

tcode

iTrader: (7)

Greddy turbo kit?

OldManZ350

iTrader: (23)

Try reversing the O2 sensors.

Conway_160

iTrader: (1)

Procharged, will do Tim.

meanz

iTrader: (23)

I've had this same issue when putting everything back together.

Conway_160

iTrader: (1)

What fixed it?

meanz

iTrader: (23)

Swapping o2 sensor connections.

Conway_160

iTrader: (1)

Ok ill do it after work tomorrow

OldManZ350

iTrader: (23)

That's what I said.

If you get the same Rich reading, but on the other bank then it's a bad o2 sensor.

Conway_160

iTrader: (1)

What do i do if the problem doesnt follow? At idle they both read the same, its only once load is applied to motor they start to freak out.

OldManZ350

iTrader: (23)

The only other possable cause would be a stuck Injecter.

Cux350z

iTrader: (162)

what i think he meant is switch the inputs back to the ECU. Meanz runs a haltech with dual inputs and wideband corrections. If you have the pass side going to the driver side input and driver side going to the pass side input you can have the corrections go in opposite directions.

Conway_160

iTrader: (1)

Im running a innovate DLG-1 so those reading are straight from the sensors, im going to swap sensors tonight.

meanz

iTrader: (23)

Just so we are clear, I swapped the connections. Not the actual sensors.

Conway_160

iTrader: (1)

Ok, mine doesnt use the stock 02 harnesses.

So i swapped the sensors its not as bad but that could be the ecu making the fuel corrections but at idle they are both 10.2-11.0 but once you start giving it throttle bank B "passenger" starts to lean out and bank a "driver" stays in the 10's-11's


I did get into it a little more accidentally and it looked like once i got the supercharger spooled a little bit the afrs seemed to start to even back out, it was lean but evened out.

I still trying to figure out how in the hell to data log with this damn red box or i would post logs.

bealljk

iTrader: (13)

^all...

I believe what your experiencing is the air movement efficiencies between banks ... the passenger side bank gets more air flow due to centrifugal forces as compared to the drivers side.

Meaning that as the air flow proceeds up the intake and make a 150 degree sweep - centrifugal forces push more air to the passenger side as compared to the drivers side ... more air flow with the same amount of fuel means that the passenger side runs lean as compared to the driver side...

This was about a 5-10 minute discussion in a High Performance Academy Webinar from back in the day. The solution (assuming you run Haltech) is to enable individual cylinder fuel trims and increase fuel to passenger side bank.

Conway - do you run Haltech? I can show you how I setup my tables if you like...

Conway_160

iTrader: (1)

I have the red box, it already has individual cylinder adjustments but thats way above me.

So in essences this is ok with the stock manifold and a vey basic tune.

Bealljk, can you send me a pic of your tables and ill mirror them to help out my tuner.

bealljk

iTrader: (13)

It is what it is unless you get a different manifold...

Pretty easy to setup and stupid easy to understand once you get your head around it. I'd like to say I developed these trims myself from hours and hours on the dyno but in reality I copied them from the HPA guys...

bealljk

iTrader: (13)

It is what it is unless you get a different manifold...

Pretty easy to setup and stupid easy to understand once you get your head around it (expect why I can't remember the -3% in low rpm/low load) ... I'd like to say I developed these trims myself from hours and hours on the dyno but in reality I copied them from the HPA guys...forgive me, I cant remember why it's -3% trim in low RPM / low load areas ... but essentially adding 1% in the high rev / high load areas...but have at it if you have some extra dyno time see if you can iron those out a little further...


passenger side:


drivers side:

Conway_160

iTrader: (1)

Thanks boss!