Engine efficiency with turbos and camshaft changes. And how to fix it with Holley Efi
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- čas přidán 6. 05. 2024
- This one is a little in the weeds as far as info but tune in and maybe learn ya something.
Also comment down below, what other Holley Efi videos do you want to see me cover. Im not promising ill do them all but i am always looking for more topics in an effort to help yall with your hotrods and Holley Efi
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Even when your videos don't pertain to me or my customers...yet, I always find your videos super informative and helpful. No b.s. just right to the point with simple explanations. Thanks Devin
Quality and easy explanations as always.
So many myths and wrong info about efficiency around
Itd be interesting to see exhaust backpressure as well. In similar scenerios If adding more dome pressure works to bring the boost back up its also possible that the turbine side is restricting at high rpm, pushing the wastegate open. If its an option, going to a bigger turbine housing or turbine wheel could be helpful and make more power up top too. That is a cool offset table to adjust boost.
Glad to see that offset issue get someone else's way. Believe it only happens on scaling offsets and it sucks if you don't catch it.
This way will stop it from taking a compete dive on you, but will never actually get you to the goal as it only adds while it's off and goes away as the offset corrects if does bring it back the other way at all. I had no issues setting up the Holley Map boost control pretty quickly and had no issues with on a friends car. Of course you have to do it all again after major changes to the combo.
Junkyard LS here. Thank you for all the tech tips. Id like more of the same but more towards us poors with the terminator. I also really like it when you bash john doc.
I build and tune Muscle cars and street rods for people in my area. I install Sniper on almost all of them. Even though we are at opposite ends of the Holley spectrum, I always learn from you Devin. Thanks dude.
Awesome to hear man
You’re very welcome
Awesome video Devin (as usual)👍
I feel like the better way to do the 2D table would be target dome on one axis then boost instead of boost time. That’s how I have mine for a 1:1 boost spool up. That way you don’t have to change the table numbers every pass. If you want to make 50lbs, the table will follow according.
Another great vid
Appreciate the videos.
Shoot, I'm slapping all that straight into my bone stock junkyard 5.3! We gonna go fast!!! 😂
Seriously though, Great info. Just so happens that we have swapped cam for this season and will now be going over data a little more closely. With any luck we'll be testing this weekend. Thanks!!
Boost offset table looks like it might introduce some oscillation. You would probably get much more consistent results from eMap vs rpm. using the value you are trying to offset as an axis will cause a moving target. definitely getting more air into the exhaust with that cam change, its gotta be going somewhere
Thanks for sharing 👍
So why not just use the map and dome control method and let a second pid just control your dome to reach your target? Seems like a better method than goofing around with this
I would like a video about startups and calculating the correct fuel flow for startups.
Thanks again for another great video! I noticed your MAT was at almost 300 degrees. That's not normal for your car is it?
Love the info my friend, I'm gonna send you some money for a microphone, or maybe I need a newer phone, 😂
Awesome video!! Do you ever use a fuel pressure compensation table? I use one on my supercharged ls with a fuel pump that can't quite keep up in upper rpm. In my mind it reacts quicker than closed loop would. Thanks Devin.
Yeah I am pretty sure I made a video on how to do fuel pressure compensation with a fb delta table
What is backpressure, VE, fuel flow demanded AFR, actual AFR, short term and long term fuel trims?
I wonder if backpressure falls in to the equation?
Why are you using a boost offset rather than a dome offset?
We need an update on the straight gate
update. i took it off lol
@@theholleyefiguy😂
@@theholleyefiguycan you explain why please? Setting up a new car and was planning to go this route.
Are you at the limit of the turbo compressor? Engine being more efficient means it shifts to the right on the compressor map.
No it will make a good bit more boost just will require keeping the gates shut a little longer
Why is the MAT-F so different between the two runs
The mat sensor was shot on the old run
I was wondering the same thing. Great video!!
Could you not just use map based option and zero out the pid and build a table that way to add more dome to hit the target boost
Engine is consuming more air.