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no idea why it's going lean.. but.. it's supposed to quickly 'switch' back and forth from 'lean' to 'rich'. that's how narrowbands work. if it's...

I'm on the lookout for one. Also got a coding guy working on helping me make one.

Oh, well....I had figured it would have worked in sequential mode, but since the tolerance was never expected of the unit, I agree it is a bust. ...

Ok, so you're saying that the Relay I have in those photos are in fact the correct wires and relay for the TH400 trans?

Ok, so If I connected 12v to the AC wire from the ECM, this in theory should then increase the idle? If it does, then I could Mcgyver up a "fast...

It's not necessarily "like that". The PCM in a 4x CKP setup can run the engine all day long quite happily firing the injectors in batch mode because...

Assuming this is accurate (I tend to think it is), a hybrid setup where the diy-ltcc handled coil sequencing & dwell, generated a synthetic 1x cam...

Well, I don't know enough about programming the 0411 pcm to know if it won't work. Retroprogramming, if you will. I figure somewhere in the memory,...

The A/C on signal is +12VDC off the cycling switch.

The 87 G20 305/3spd auto Van I put a 6.0L into had the same part number relay as the fuel pump for the kickdown for the 3L80 aka late model TH400...

Thank you! I'll do some more research on the AC Signal, I don't want to guess and fry my ecm. ;-) AHWZ= XUZA is the name of the rig....

$10 as primary communication ID should be tside. $18 should be eside. Must be confirmed in code as it is only assumption. $18 triggers the VPP...

Ignition with 8 coils is only possible with 24x crank and 1x cam signal. A signal translator from opti signal to 24x,1x signals will allow the use of...

Hello and welcome to the forum! You're not the only one here with CCC scars. Is your procharged SBC computer controlled?

I'm not sure that's of much use. Before I risk putting my foot further in my mouth, can you clarify your intentions? Are you saying it's possible...

check these guys out they've somehow figured out a way to get a net energy gain from separating hydrogen from water, which is something that the...

Cool videos. Nice one Mitch

Hmm.... That's a universal butt dyno recalibrator. Most butt dynos are negatively affected by a heavy wallet so devices like this provide a means...

1) BLM numbers indicate greater than stoich combustion under load. 2) Confirm BLM cell number when change happens. Sounds like two different...

I do not have a complete wiring diagram of such a car, but normaly ecm is controlled by minus signal (earth, ground). If the A/C pressure switch will...

As far as I'm aware, any 2-bar or 3-bar custom OS will be a pirated HP Tuners or EFI-Live OS. But if anyone has created a freeware custom OS, I'd...

The truck 0411 applications with a 4x crank sensor still use a distributor. You're not going to get CNP from that setup. It would require a 24X wheel...

Good call Steve.. and the video proves it all lol

https://www.youtube.com/watch?v=S8vjWXXIJas https://www.youtube.com/watch?v=ytwlDVaFbec

On the new wiring harness there's a wire labeled AC Pressure which I haven't connected to anything. Please forgive me, what do you mean when you...

Awesome! Thank you BCC: AHWZ 7639 Just the few steps that DaveW had me take, ie: 3 wire O2 Sensor etc has the vehicle sounding and...

I'm sorry, but I seem to be having trouble seeing the relay or any of the wires attached to it. Maybe you have a wiring diagram and can match up...

That’s what i’d presumed. Other than it setting DTC’s i couldn’t see how it could alter the pcm code. It’s not piggybacking any input either. ...

You have the wiring diagramm from SOOB, there you can see pin B8 is coming from A/C pressure switch. Try to give it a minus signal alternatively a...

Agreed Steve ��

Thanks for looking this over for me. I'll run a log again, I must have somehow stopped the logging sooner then I thought.

total and complete bullshit. the box probably doesn't even have circuity in it. there's no known way to externally control fueling (or timing or...

Ah, i thought it was a generic unit rather than application specific. Ta Mitch

It re maps your fueling tables MAF ect to a preset in that is built in to the unit to a leaner fuel mixture. It's a external power programmer