EECTuning.org

Transient fueling can be your saving grace or your downfall. One of the problems I've always had with Ford's logic is that it doesn't lock-out Closed Loop operations while accel/transient fueling is engaged...or a the very least prevent it from reducing fuel. Normally accel/transient enrichment sust...

...I also read that in real life, the EV motor doesn't get to be nearly as good as for a static machine, as most of the existing 'leccy motor designs are best/efficient at constant running speeds, which is definitely NOT an EV profile. (Q. Are there any EVs with a true CVT system? I don't know... I...

...Ah, yes UFO power systems...I might dig in further for a fun read... The most interesting were his interviews with people like Joe Rogan. I'm not normally a Rogan fan, but I stumbled across that episode just looking for other interesting things about Lazar. ...NOTHING has close to the same capac...

From the political standpoint, I'm right there with you. But there's numerous political issues I think we all could rant about. Unfortunately the moment we wade too deeply into those waters, you never accomplish anything other than pissin' people off or reminding them why they need to be pissed at t...

...I am really curious how we plan on getting rid of these so called battery packs. I know we can only re cycle about 10% of battries as of today and the rest is buried. So we did big holes to mine lithium and then we dig big holes to burry them... The problem isn't that they are not recyclable. Th...

You make very good points and many of them I agree with. But I do try to think "balanced" and I do have to admit that the performance benefits of electric are undeniable. And there are some aspects that your point of view neglects. Now don't get me wrong. I'm not on the side for electric. But I do b...

What you are describing is where having EEC Analyzer comes in quite handy. I always had filters setup to remove lines from the datalog that represented conditions I didn't want being taken into consideration. I had a bunch of filter conditions for example: Filter out rows where ECT was below 175 Fil...

My experience with MAFs is with old stock 55mm MAFs that came on the early 5.0Ls, C&L aftermarket MAFs that reused those stock MAF's sensors, and stock slot style MAFs. I can't say I've ever noticed MAF accuracy change with air temps. I've definitely seen where engine temps mattered, but generally t...

I would agree, not having a priming pump (which usually its the fuel pump that's stuck on when the EEC is dead), stuck on fan, and the inability to pull codes does point to something with the EEC.

The next things to check are going to be things the engine needs to run. Here's my thinking: Injectors are fed 12v and they are activated by sinking to ground through the EEC. So make sure they have 12v when the ignition is ON Check if the EEC is sinking them to ground when cranking the engine via t...

That's actually good news.
This means you may still have good EECs. But it does mean you will need to look elsewhere for the failures. Start by verifying voltage on the pins that are supposed to have voltage on the big EEC plug.

As for the QH bricking an EEC, I've only ever heard of this happening during installation/removal of a chip on and off the J3 port with the ignition ON. I've never heard of a single intermittent connection doing it. I always just assumed that the real cause of doing this is how people often wiggle t...

The other possibility is that the EECs are just old. Open the cover and look for leaking capacitors. They often leave residue on the circuitboard when they are leaking from the bottom. Here's what to look for: https://www.f150forum.com/attachments/f10/52991d1479348706t-help-1991-5-8-2wd-engine-stumb...

I think AHACA is pretty well broken out. And I think it is both available from CoreTuning and sailorbob. As for setting you up with a starter tune, anything's possible with enough money. But here are my thoughts on this post: You probably want to make this a new post to get more eyes on it since wha...

...Is it possible to buy a strategy description pdf ? On our Forum I have found CDAN2, CRAI8, GUFB, LHBH1, but I really want to learn more about AOAG3, QAAC5, CQAB2 unfortunately I can't find the correct documents... The documents we have were released into the wild by leakers. It's not known wheth...

Just spit-balling here, but is there any chance your HEGO(s) is near a CAT converter? I'm just curious if reversion might be in play at lower RPMs that might explain this?

I see the TPS rate responding to the TPS position, but not in any way that seems useful or makes sense.

My guess is it's an interpreted or calculated value on the datalogger's side and it just doesn't have the sample rate necessary to be useful or meaningful.

...when logging transients, when the values change from 0, it's usually jumps to a specific number (19.XXXXX seems to come to mind) for a second or 2 and then back to 0. What should transients do? Should they taper up/down and +/-, or do they jump?... That 19 value is the lowest-value representable...

...In that vein, engine ground and HEGO ground, may be worth a look. I struggled with this back when I got my truck 1st converted to a V8 in 2006. In fact it was this issue that required that I get a TwEECerRT so you could log what was actually happening. With the TwEECer, what I found is that elec...

Its hard to say if that's something "magical" happening right at 1900 or if that just happens to be when the LAMBSEs capture the lean condition. In general, it sounds to me like either Injector Slope/Bp values need to be dialed in and/or you are still using stock Injector Offset values which can cau...

...The value DOES seem to in a way correspond to tp rate. But it spikes and dives under seemingly random instances when retested... Volts/Sec can be thought of similar to an acceleration rate. "Volts" in this context is actually "Change-in-Volts" which means you should only get a value from it when...

Someone else here recently mentioned that there was roughly a 30% difference between their ProM 80mm MAF curve and the one listed in EA and were inquiring as to how accurate the EA curve is given this large of a difference. There's a chance that the curve did change at some point OR that EA is and h...

96 F150 with 4.9L is SEFI not batch fire Good to know. For the 96 L6, is the exhaust manifold a single exhaust like the 80s era manifolds were? Or are they dual exhaust capable (i.e. dual HEGOs and therefore dual bank injection)? Knowing that would help to answer the original issue of whether the i...

I don't know much about the AGANF strategy and I certainly don't know how it works on the L6. But if it holds consistent with how other truck strats work, it uses single-bank batch fire instead of dual-bank SEFI. If it is, indeed, controlling all 6 injectors as a single bank, that might explain the ...

So by chip do you mean one that plugs into the J3 (I think?) port on the PCM meant to hook up to a programming tool, or do you mean a chip that plugs in obd2 port, or somewhere else? Ive never heard of that so you got my attention haha!... Technically the Quarterhorse can be thought of as a chip si...

...in the distant future, disabling secondary air injection and EGR related systems without having CEL(so done properly through EEC-v) will be in the future of the engine... That can be done easily with a chip. Unfortunately to do it all yourself, you'll need MOST everything listed...or access to s...

The 7th column looks like catchcodes. The last column looks like hardware codes. Notice how the first 4 use the same hardware code, but the last 4 use a slightly different code? MY GUESS is that's a difference between manual and automatic. But being this is an F-series, it could also be the differen...

Have you considered Moates Quarterhorse and BinaryEditor? If you really wanted, you could probably purchase a definition file for your EEC. I have no clue how expensive Forscan is, but I'm guessing you could get outfitted with all the software, hardware, and licenses for somewhere under $700. I'm be...

I didn't see any red flags in your post either. The main thing I gripe on with newbies on the forum is giving threads lame titles. Your title is perfectly detailed and reasonable.

: EEC_Label.jpg (66.55 KiB) Viewed 342 times

Is the hardware number the one that starts with SFI?

Search found 10969 matches

Re: What's Considered Too Much MAF Adjustment?

Re: California to make EEC retuning illegal

Re: California to make EEC retuning illegal

Re: California to make EEC retuning illegal

Re: California to make EEC retuning illegal

Re: California to make EEC retuning illegal

Re: What's Considered Too Much MAF Adjustment?

Re: What's Considered Too Much MAF Adjustment?

Re: Can a Quarterhorse potentially brick the computer in my 93 Thunderbird?

Re: Can a Quarterhorse potentially brick the computer in my 93 Thunderbird?

Re: Can a Quarterhorse potentially brick the computer in my 93 Thunderbird?

Re: Can a Quarterhorse potentially brick the computer in my 93 Thunderbird?

Re: Can a Quarterhorse potentially brick the computer in my 93 Thunderbird?

Re: How much research/education to make a 372 ci MAF Bronco work

Re: Strategy reference manuals and hardware / strategy change

Re: Fueling and question about Load above 100% N/A

Re: EEC-V and throttle rate of change

Re: Fueling and question about Load above 100% N/A

Re: Fueling and question about Load above 100% N/A

Re: Fueling and question about Load above 100% N/A

Re: EEC-V and throttle rate of change

Re: Fueling and question about Load above 100% N/A

Re: EEC-V and throttle rate of change

Re: EEC-V and throttle rate of change

Re: EEC-V and throttle rate of change

Re: EEC-V and throttle rate of change

Re: EEC-V and throttle rate of change

Re: EEC-V and throttle rate of change

Re: Struggling with a REAC3 EQE1, 99 Ranger with 99 Explorer 5.0 and T5

Re: Wideband input eec-iv