EECTuning.org

From what I recall, Jon deployed this forum on a server that does other things. And as a result, it's not high priority on that server. So depending on what all else is going on with that server, the forum server app may take back seat and get whatever pieces of processing time are left over. I also...

TBO, I think the best bang for the buck for someone today would be to go with complete aftermarket systems. Holly has REALLY well supported software, hardware, and algorithms that work for daily drivers as well as track enthusiasts. Not to mention the hardware is far more modern than these EEC-IV/V ...

Without the ability to datalog, I don't know that there's much we can tell you. Datalogging gives you "eyes" into what the EEC is doing and is contending with. Without it, you are tuning blind. Tuning is already a challenge especially if you are new. Doing it blind will make the experience even more...

Can you datalog the HEGOs and confirm what they are doing?
If you can datalog, make sure you have the LAMBSEs (aka STFTs), Closed Loop status, and ECT.

Sensors, like a wideband, are great when they are accurate. However the values they report can be skewed. What makes me suspicious of your data is you said the engine cranked and ran with values reporting around 20:1 AFR. That's VERY VERY lean. At idle and light load conditions, there's no worry of ...

The problem I was experiencing had nothing to do with hardware failures. It was all in the firmware (or more correctly stated, rigidware) in the QH's CPLD chip.

First thing I noticed is the heads. Any aftermarket head is going to flow better than the best stock ported head...and usually without too much trouble either. Better port dynamics, bigger valves, and usually better chamber designs all lead to higher performance while doing virtually nothing else. A...

I know there is an issue in the QH that is very intermittent where the tune you select (hardware or software mode) doesn't serve the "correct" tune. However MOST of the time for me, it was Tune 8 that got erroneously served...not always but far more common when it happens. I suspected this was happe...

If the WB is showing that you are getting rich on cruise, but the computer is in Closed Loop, my guess is there's something else going on that's leading the computer to think it needs to richen the mix. Based on personal experience, what caused this for me was a grounding problem. I had a ground lug...

If I had to imagine why those different tables exist, here's what I come up with (may be absolute fiction, or may have some truth, no clue): Each of those tables were created because of different departments within the R&D division of Ford at the time. One group was tasked with coming up with best M...

This may not apply to your strat, but I believe the GUFB strat has a Base Spark table and a Sealevel table, along with an Altitude table. It does NOT have a Borderline table since it doesn't do torque inference. Point is, the base table is only active during "lugging" IIRC. And when "lugging" is def...

There is no such thing as a completely self tuning system. Completely agree, but compared to the headaches we have/had with these older antiquated strategies, it FEELS like self-tuning. The logic and ability to infer things is much better in newer stuff (both factory and aftermarket). But it still ...

I don't think the 88 is a candidate. The 89-93 era Mustangs are the ones that got MAF. Prior to this, the EECs were speed-density and I believe were also less capable. I don't recall all the details, but I recall that there were enough differences in the hardware between the two era EECs that you co...

Right now, AI is improving things but the capabilities are overhyped. It doesn't live up to the credit it's being given. But it is fair to say AI is like replacing your manual or pneumatic tools for wireless (battery) tools. It's not that the old tools can't still do the job, but damn, wireless dril...

That's a good question. I can't remember if GUFx strats are capable of being run from a TFI distributor that does not have the signature pip. I would think it's possible that would work but I can't say I recall anybody that's actually attempted it. I THINK I remember there being a setting in the str...

When I posted this in 2023, LLMs and AI Agents were still in their infancy. And while I had messed with it, I wasn't greatly impressed with it, but I did see the potential. Since then though, the power has gotten QUITE useful. And I too use it daily for whatever I can think of that it might be able ...

It could be something rhythmically drawing the voltage down more than the alternator can respond to. Thus it's possible the thing drawing the current could be the thing making the vibration. Or it could be the alternator making the vibration trying desperately to keep the voltage as high as it can d...

Those are V-pattern injectors. I've got a post somewhere that links to a Youtube video showing the spray pattern of V-pattern injectors. These are intended for horizontally oriented intake ports with heads that have 2 intake valves. They don't work as well for older engines that have vertically orie...

Here are some things that come to mind worth confirming/verifying/eliminating... Determine if the rev when pushing in the clutch is because of an unreasonably high ISC airflow. To do that, note what the commanded duty cycle/position/flow for the ISC is and note if it is the same or jumps on declutch...

A possible compromise is also written into that description...Z_TABOFT. Set that to not be contingent upon WRMEGO thus allowing you to enter FN1360 earlier than CL. But again like the comment says, you'll likely want to increase ECTSTABL to >120deg. Going back to your original comment, you are wanti...

The comments for FN1360 for GUFx are: FN1360 - Stabilized OL Fuel Table This table associates Open Loop fueling to RPM/Load as opposed to ECT/Load, which is what FN1307 associates Open Loop fueling on. When FN1360 is enabled in the tune, it is activated when WRMEGO=1 and FLG_ECTSTABLQ = 1. WRMEGO an...

Most of the tools us that have been here a while used were developed during the Win 2k/XP days so Win8 should be no problem. I used CalEdit/Calcon, TunerPro, and BinaryEditor/EEC Analyzer on a VERY old Dell WinXP machine, then a Toshiba Win7 machine, then my current and very dated HP Omen Win10 mach...

I haven't used that (patch apply feature) in BE for quite some time, probably over 10 years. So I can't say what happened. But it sounds like there might be some bug in BE that Clint can go in, try to reproduce, and fix in a future BE version. While that is the most convenient way to apply those pat...

I failed to also mention those points that if fueling is off during idle, it doesn't matter what your idle parameters are in the tune. Another thing I discovered and didn't mention since I got so focused just on ISC control aspects is that excessive spark can negatively affect idle as well. While th...

All my experience is with GUFx strats. However I suspect other strats are similar. Idle has multiple stages, there's Preposition which is where the ISC gets set when the TPS not at closed throttle. Once the TPS returns closed, the mode transitions to DASPOT which is a decaying of the ISC position fr...

Any time you manipulate your selection of datalog items, re-write the tune even if you haven't made any other changes to the tune itself. It's not obvious, but part of what's being done to the tune in the background is to include some of the values you want to datalog as part of additional "relay" c...

I don't know how A9L2 is setup, but I believe the original A9L would run the engine open loop for a good 1.5-2min before switching over to Closed Loop. During startup (cold or hot), the tune usually runs the engine a bit rich...even richer than normal open loop. But the tune gradually leans out the ...

Most strategies don't rely on MAP or MAF on crank. The tune has a function or table that is hard-coded to fire the injectors a FIXED amount of fuel based on ECT (and possibly voltage). Crank usually doesn't have to be that precise. It just needs to NOT be lean and not be OVERLY rich so much that you...

Even if you don't have a license for EEC Analyser, install it and go to the Cam timing calculator and read the helpfiles about how to use it. There's a LOT of peripheral info about cam timing beyond just using the calculator that I think will answer a lot of your questions.

The adjustable FPR I bought years ago did the same thing. It would bleed pressure off within a few seconds after the fuel pump was off. This created a longer prime-time to get fuel pressure when cranking. I could not turn the key from OFF immediately to CRANK. If I did, then the starter had to be he...

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