Wideband readings?

[Texas gn]

Does this sound right? Just had a new TT chip burn ’t for my setup (see sig) and I installed a Aem wideband. Fired her up and took her out to a back road straight away and let her rip. Third gear to the floor showed the wideband showed 12.56 and the o2s 760. No knock. I stopped and added 10% or 141 to the fuel via the scanmaster. Let her rip again and the WB showed 12.34 and o2s 770 on the powerlogger. If this is the case I would need to add a lot more fuel to get to the 10.8 -11.0 range…Right.. BTW my fuel pressure is at 42 vac off and the boost is only at 20-21psi. Seams to me the chip would be closer to my requirements? or not. Thanks

 

[TURBOPOWERED68]

very interested in the replies you get from the gurus

if no KR why did you fatten it up???

 

[kidglok]

did you change the powerlogger wideband input to AEM?

 

[Eric Stage I]

Yes, make sure the Powerlogger is set for the proper AEM (the gauge type, or the AEM inline). You also need to make this change, and then go into monitor mode so the Scanmaster reading updates to the proper wideband.

If all that is ok, then something is wrong (fuel pressure, alky flow, etc).

Eric

 

[Texas gn]

did you change the powerlogger wideband input to AEM?

…well I guess that could be a problem. How do I go about that? Thanks

 

[Texas gn]

Think i found it....(AEM InLine) Thanks everyone. I will try it tonight.

 

[rmar]

I think his 6.0 chips default to 10.8..... Kinda safe range.

 

[kidglok]

very interested in the replies you get from the gurus

if no KR why did you fatten it up???

imo he did the right thing...id trust the wideband over the narrowband

 

[TURBOPOWERED68]

imo he did the right thing...id trust the wideband over the narrowband

I AGREE with you as i would have done the same thing- Fatten that itch up and play it safe.

BUT i am looking to learn

and from all the reading I've done and recent conversations with people that know tuning most of what i have gathered is that you tune for "as lean as possible with OUT any KR".

If he had a clean run at "wideband showed 12.56 and the o2s 760. No knock." WHY fatten it up??

 

[kidglok]

I AGREE with you as i would have done the same thing- Fatten that itch up and play it safe.

BUT i am looking to learn

and from all the reading I've done and recent conversations with people that know tuning most of what i have gathered is that you tune for "as lean as possible with OUT any KR".

If he had a clean run at "wideband showed 12.56 and the o2s 760. No knock." WHY fatten it up??

you would stop and figure out whats going on like he did

 

[Texas gn]

I am still learning. When I added the fuel I was mostly looking for a state change to the numbers…was not sure which way they need to go but more is safer. O2s..higher means richer and WB low means richer. I am still in the 11.30 area and have read that most happy TR are in the 10.5 to the 11.00.

 

[3.8L V-8 eater]

Was being on the wrong setting the reason for only a suttle change even though you added 10% more fuel??

 

[kidglok]

Was being on the wrong setting the reason for only a suttle change even though you added 10% more fuel??

could be, theres a lot of different variables that contribute

 

[Texas gn]

Was being on the wrong setting the reason for only a suttle change even though you added 10% more fuel??

Yep...looked bad lean at 12.5

 

[Texas gn]

That fixed it...WB is right where it needs to be until i get to the dyno or track. Then i will pull some fuel. Thanks again for everyones help.