When the ect gets above a certain point it enters hot mode pe fueling. Say your temp gets to 220( example) or better, the factory enters different pe mixtures then a normal ect. Usually richer to help save the engine. The tables you are modifying all have descriptions on what they do. Like hot mode pe, the desription is right there to read and know what it does. As far as lean cruise do a search its been covered tons over the last few years.
Last edited by slows10; May 17th, 2012 at 05:20 AM.
1997 S10, 06 trailblazer SS LS2 swap, 4L70E trans, 76mm turbo. Factory ZQ8 suspension. 3.08, G80 w/a zexel. With a 0411 swap.
Also you can change B3608 and B3609 to all zero. This effects the delay for pe.
1997 S10, 06 trailblazer SS LS2 swap, 4L70E trans, 76mm turbo. Factory ZQ8 suspension. 3.08, G80 w/a zexel. With a 0411 swap.
Ok, I had adjusted B3608 down to 2seconds. Saw B3609 before but dindt know about it. Got both at 0.
Just realized there is a few more Rear O2 MIL, etc I needed to turn off. I had only done PO420 since I got no cat but forgot that my rear O2 (still installed and connected) developed a bad heating circuit a few months ago. So it was trippin the MIL still. Got all Sensor2 Off now.
Searched Lean Cruise..but never seen if it was active on my PCM. I know DFCO is active.
Thx for the help!
BTW: P0420 is a catalyst code, not a rear O2 code.
Lean Cruise is internally disabled on US PCM's.
Oh ok, so Lean Cruise is not available to enable? No biggie just curious.
Yea I had PO420 (catalyst effeciency below threshold) when I had a hi-flow cat installed once and always turned the code off. Now with no cat same.
Is a cax not available Joecar?
Lean cruise is not setup from the factory in us vehicles. But what joecarmight have forgot to mention is it is easily installed with a add on file(cax I believe) available on this forum. Then just populate the lean cruise tables and you should be all set to go. Maybe a cax is only available with an 0411 ecm?? Dont know, joecar kinda left us hanging with his short post.
1997 S10, 06 trailblazer SS LS2 swap, 4L70E trans, 76mm turbo. Factory ZQ8 suspension. 3.08, G80 w/a zexel. With a 0411 swap.
Hate to tell a guy to search if something just is not there, but from what I read lean cruise is rather quick and simple to get going in us based ecms. Someone may have to build a cax for your os? not sure.
1997 S10, 06 trailblazer SS LS2 swap, 4L70E trans, 76mm turbo. Factory ZQ8 suspension. 3.08, G80 w/a zexel. With a 0411 swap.
Ahh ok. Well honestly thats beyond my current skillset with tuning right now it seems. Ill wait untill I master it better before adding stuff like tht.
I did PE today and since I am familiar with it from doing it on DST, I will in the next few days get that dialed in better.
Next I want to learn how to datalog. Still havent figured that one out yet with selecting the PIDs and whatnot.
Then timing. Then....who knows
It is alot to master. I am far from a pro tuner but what I can say is just spend the time reading. Im sure you have already. Have you read the tune tool and scan tool manuals yet? They are pretty good for learning things like setting up maps,dashboards,etc. When you connect to the scan tool on your truck you can validate the pids for your ecm. Then you can do some logging, and actually see what the ecm is doing.
1997 S10, 06 trailblazer SS LS2 swap, 4L70E trans, 76mm turbo. Factory ZQ8 suspension. 3.08, G80 w/a zexel. With a 0411 swap.
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