Was just wondering who has this option enabled and working ? It should control the A/F at idle and cruise .

Mine isnt enabled and with the 850 injectors and a 800rpm idle . It seems to load up if it idles very long. A/F looks to be around 14.2 to 14.5 at idle

 

I have it enabled. Not sure what you mean by "load up"... One thing that helped was to compare the O2 sensor reading (in one of the calibration tables for the O2 sensor readings) to your external wideband and well, calibrate them.

 

Can you explain this "loading up" more - I would get to the bottom of whatever is going on there first.

 

A/F looks to be around 14.2 to 14.5 at idle . So its running rich and loads up with gas and hesitates or bogs down sometimes when you go to take off after sitting idling at a stop light .

 

I use it, too. You can just turn it on and then turn it off if you don't like it. I believe it strives for a Stoichiometric value of 14.7, so you're not real far off.

To me, 800 rpm idle sounds a bit low... especially if you have bigger cams... maybe bump it a bit?

 

Well that is not that rich and I doubt it is the cause for bogging down.

This could be the AF is off in the load column when you first step on the gas or it could be that your enrichment sensitivity table is too rich. When you are parked at a stoplight (uphill test is better) - and you step on the gas to move forward, does your wideband go way rich (like below 10)? That would bog the car.

I think I am using the right terms and referencing the correct tables (either base fuel, low load/rpm columns or enrichment sensitivity, low rpm columns) but please confirm with Hal...

 

How do you enable this function? Where is it located in the startup page?

I have been adjusting my Haltech constantly while crusing to get the a/f right... IT SUCKS.

 

Ha ha - stop playing with the thing while you're driving! You're gonna kill yourself, Top Dawg!

I think the closed loop enable is on the Tools -> Main Options (where you enter your injector specs, etc)

I would check with Sharif first and ask if he set up the other tables (maybe they are set up by default). Also keep in mind you have some custom stuff modified because of traction control - so maybe you should PM Hal actually.

I know I'm no help - sorry man. The thing does work though... I was thinking of bumping the target up to 15.5 and save some gas cruising! (at no/low load only guys, no worries)

 

Pretty much the same here. My AF's are about the same and notice when you are on a hill or idle-ing for a period of time it feels like it is rich. Especially if i'm sitting on a hill and then try to reverse up. I can smell the fuel and sometimes see a a good puff of smoke come out from the exhaust. This only happens when the car has been idle for a bit otherwise all appears to be fine.

The other thing I noticed was that the car stalls easily. If I’m sitting at the lights and while I’m in gear and slowly release the clutch it will just stall with the slightest load unlike a normal car where it would shudder/buck and then stall.

This is with external WB, loopback enabled, stock cams, PE 510's

 

the term "loading up" is from older carb/blower set ups where the fuel would puddle in the intake. quick tap of the throttle clears it out. impossible to happen with the centrifigul blower with a bypass and port fuel injected.
my guess is the tuning just needs to be refined abit. maybe a temp correction or something. can't wait to get my dam turbo fixed so i can start playing with the haltech more. only got my idle to about 90% before some weld material went through my turbine!

 

After unning the car for a while it has gotten better . For the most part it is the cams [ NIsmo ] and 750rpm idle that is making idling bad . A bump in the idle should take care of it . Even now with out the blower on the car , the Haltech is running the car very well . I havent even retuned for N/A .

 

Guys hello. I had the same issues. I have tuned the car with the O2control disabled. One hint, that worked fine with me.

Look in the fueling map where the iddle sits. Then mark all surrounding cells about (four in total) with the same fueling (ms)value. In addition ensure that all the timing corrections for air temp and cooling temp are 0.

I accomplished to have a perfect iddle even with load up values. In addition the extreme vacuum columns (last two of them) to be trimmed in order when you depress the pedal, not to reach values bellow 11.