Holley EFI Tuning Tip!! Don't make this mistake!! 

_He asked for a 13, but they drew a 31_ 😆

@@eformance LoL

I'd like to believe there was a protection for that.

There is…. always verify timing w a light

@@MegaMyk777 true but you'd think there should be some level of confidence the system is performing as intended once base timing is set. Apparently a bug know one else discovered previously

😂

It does ask. This appeared to happen because of a simple lack of communication (which likely ended with Steve telling everyone don't EVER touch the dyno computer when he's in the middle of tuning someone's engine)...

It ran so good until it didn’t…

I wouldn't necessarily call it a 'hole' but it does seem silly to the average person to default that window back but i also see why it is the way it is. A lot of standalones and windows software will work like that unless extra attention to programming is involved. I'm sure their efforts in programming lie elsewhere, and maybe that's something they'll revise.

Na its complete crap!! Holley represents that their pricey tuning software is the way to get a good tune yet "checking" a setting can create a change without alerting the end user whos job is work on the motor not the software. Its like a torque wrench that changes a value once it is used.. If this tune happened to have the pointer offset the other way, the timing change could have been catastrophic on a $100K motor. Holley would just say tough shit, eat it.

@@kwasg3 It isn't crap... First, Steve's guy didn't just 'check' a setting, he "changed the Type of Crank Sensor" and since each Type of Sensor opens with it's own Default settings it only makes sense that it's going to open the defaults when the "Type of Crank Sensor is changed again". Second, System Parameter changes don't get sent to the ECU live (you need to Sync and send System changes) and third, the end user DOES get Alerted!! The next time the computer is synced with the ECU it will show a "Fail" (with Red LED) on System Parameters (if/when any settings in the ECU are different from what's open on the computer) and your given a choice to either get from or send to. Mistakes were made here but they weren't Holley's fault...

@@KCadbyRacing Well that's not what the video represents. Steve didn't check the setting, it was a complete ready to go tune at some development point on the dyno, and one of his guys checked a setting to nail it down in conversation maybe, and it reverted to a holley preset. This shouldn't happen in any software. And my experience with holley is that they don't pay attention to any detail that isn't a primary thing to help sales of their product, period. They're quality control is zero. And this isn't Holley, the original people from the 60's that did inovative cool shit and high quality stuff for 40 years, but the mega corp that has conglomerated holley and a dozen other hotrod lines all under one roof and has zero quality control.

@@kwasg3 You need to watch the first 14-seconds again, where Steve says "this is about the Holley systems AND OTHER SYSTEMS" = this can happen with any/all systems (not just Holley). Coming from someone that has done "nothing but Custom Configuration/Tunes" (for Holley, Maxx, FuelTec and others) on NA, NO2 and Turbo street and Race Bikes), I can say the software works 100% as intended. Three basic mistakes were made here and this video proves it could happen to anyone no matter how smart and or experienced they are. First: Never EVER touch someone's computer/tune without telling them. Second: Never EVER make "changes" to a tune without FIRST doing a "Save-As" with a different name (so CHANGES aren't made to an ongoing tune). Third: someone missed seeing the "Waring/Fail that System Parameters were changed" and SENT THE CHANGES TO THE ECU. My experience with Holley has been (11 years of building/tuning Custom Calibrations for motorcycles) is they (the Holley engineers and tuners that have helped me over the years) have payed very close attention to any/all details that can (and have) vastly improved what the Holley ECUs (and software) is capable of and I have never once had any quality control issues with any of the "many" ECUs I have worked with...

Looks like Holley is busy working on new intakes instead of fixing this bug. 🤠 ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-9ONLZ3UcLLo.html

@@words_guy5750 ...Chances are they didn't realize the "real life" problem. Computer types sometimes need a little "push" to reality.

Yeah, but I still think those exhaust valves are pretty pissed...

I've worked on some management software for a completely different type of equipment but with the exact same problem. Fortunately nothing is changed on the actual equipment until you export the settings to it. So if you just want to play around with it to see what it can do without actually changing anything, you just don't export it. You can even do it without even connecting the laptop to it. When you actually do want to tinker with the real thing, you open a fresh instance and import all settings from the equipment first. I have seen fires and failures from guys that did not realize this. When a 20 amp current limiter accidentally gets defaulted to off, sparks can fly, LOL

Let's just agree that the run with the low timing would be HOT! Those poor exhaust valves lol.

Reference angle is basically the same as where you set your timing pointer on your balancer. Imagine your balancer slipping 3 degrees backward from a seized accessory. Your pointer would then say tdc 3 degrees after actual tdc and your actual timing would be 3 degrees less advanced from what your timing light would read. The sensor reads the change from no tooth to tooth on the reluctor on the crank/cam. Rising edge means it reads the change from no tooth to tooth, falling edge means it reads the transition from tooth to no tooth. The difference in reading would depend on the size of the teeth.

The engine itself wouldn't have known the timing changed. The only thing that would be able to save this would be knock sensors. A lot of the time on an engine this race style there aren't knock sensors installed.

@@TurboV8boi exactly the engine doesn’t know how much timing you’re commanding and it doesn’t know if you understand how to check static timing. So what I was asking was if he would have set up a safety, you know an advanced table or simple timing safety, in the beginning of the dyno session if it did the opposite and accidentally made 14° more instead of 14° less due to his employee looking at the Holley setting.. if he would likely be pulling the engine apart because of it making 14° more instead of less. Would be the same if accidentally having your timing map 14° advanced over what you actually wanted and not realizing it and making a pull.

Someone would have been out there with a broom and bag of oil dry, Steve would have been at the local watering hole contemplating his next move.

Troof!

AFAIK, the trick is to use a "safe" fuel and add timing until it don't make more power, then back it down 1 or 2 degrees. As for "what is the offset for fuel X vs fuel Y", that's probably tribal knowledge.

@@eformance In a run that fast, I think it would be hard to really determine limits until you break it. On our engines, luckily they typically make best power before detonation timing limit is reached, and make the same power over 2-2.5 degree timing window usually. Im just always amazed how these high boost motors get optimized - lots of testing and broken parts I would think

I've only watched someone else messing with a holley, never done it myself so I'm no expert but from my experience with other systems, I imagine the default settings are ultra conservative so anything getting reset to default should be safe. I say should because these systems are designed to work with a wide range of different hardware and it is entirely possible that some specific combinations could default to a setting that is hazardous.

@@wingracer1614 Its possible I'd say

No, watch the video

@@wingracer1614 Steve ,,you were showing an old 383 rebuild on an old sm chevy with great torque is what I'm looking for,not rpm,,, I have cash and want a no holds bar short block sm chevy that will make azz kicking torque for a 99 chevy 2 door 4x4 Tahoe for the street and last for 50k miles,,,,can you do such an animal??? moneys not a problem!