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tuning advise needed wot ltft off

shawnrandolph

shawnrandolph

New member
Alright I tuned my car using hp tuners just fine with the help of you guys and a lot of reading.
Now my car has a xp hot cam so I read that we tune to o2mv in the 920 range instead of the 940's. So I did. Under wot my ltfts are -5 from 6500maf hz up to redline
WHY?
Do I need no move my cammanded afr to like 12 instead of 11.7
Thanks just a little confused
Please dont flame we all gotta learn somehow
 
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Re: confused need advise

- knows jack about tuning. but yes i read the thread. change the title and add something with tuning in it. might get more attention that way
 
PE is locking them in at -5. If you set PE enable to 100 percent throttle, it basically disables PE. Then you can slowly tune your fuel trims, don't ever go more than 50% throttle with PE disabled. Once you have them set. Re-enable PE and see if that keeps them locked in at 0 during PE
 
PE enables at throttle%. What does your PE enable table look like? It should be lower than stock.
 


the closer to zero you get the cruise Lft's the better the chances the WOT will lock in at zero. You really need a wideband. I cant tell you how fullish it is to tune WOT on a narrowband. At 920MV my cars hitting 11.3 afr FWIW. @ 880 im around 11.8
 
Agree'd. I have tune for friends and when you compare narrow to wide it is always diff and never consistent. 920 could be lean on one and rich on the other. to get the trims to lock in at PE/ WOT you need to have the prior cells as close to if not Zero.

01gpgt01 said:
the closer to zero you get the cruise Lft's the better the chances the WOT will lock in at zero. You really need a wideband. I cant tell you how fullish it is to tune WOT on a narrowband. At 920MV my cars hitting 11.3 afr FWIW. @ 880 im around 11.8
Click to expand...
 
if you have your EGR disabled, you can do what i did and have the output from the wideband to into the EGR. then when you do a scan you just scan for EGR voltage. i dont remember the formula right now but once you put the formula in you can log the wide band without having to run a wire to a A/D input.
 
X2 on the wideband... I pay very little attention to my trims at WOT... its all the wideband...

plus if you wanna tune closed loop now you can...
 


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