So your just going to pull a specific vac (in Kpa)? I hadnt thought of that. Its a pretty good idea. But how are you altering the table then? Just one cell at at time? And how do you know wheter to add or subtract?

 

The VAFPR table is VAC vs BPC. My VAC 0 happens to be BPC 87. Table for VAC 5 needs me to provide the fuel pressure. The calculator I use I believe is same as yours. I calculate BPC for that psi, fuel inj size, CID, and # of injectors. It may come to say 20.3 PSI. BPC then calculates to 89. I do same for VAC 10 and so forth down the table.

 

Oh ok, that makes sense. I will remember this and do it my self sometime when I have more time. Thanks for sharing this!

 

Hey beast, did you ever try the 3001 bin? We have very similar engine builds, so was wondering how it worked for you. I tried it, and it ran better overall than what I was using. I checked all the flags needed for my application and had to smooth the ve at idle, but it is a better starting point.

 

I have not tried it yet. Which table values were you using before? Right now I am using values that go from 100 at 0 Gm/sec, down to 70 at 255 Gm/sec. The 3001 table goes from 20 at 0Gm/sec to 0 at 96 Gm/sec. I will try it out and let you know.

 

Mine seems to run better with the table from 2018.bin. I have an open element filter and reading some of Rbob's other postings, this is the correct table for my application. I have my IAT mounted in the top of the filter.



I just wired up a relay to my electric fans. It cleaned up my engine bay alot! I was using a Hayden fan controler with a radiator probe, but that stopped working so I figured I would give this a try. And it works great! Thanks Bob for everything the EBL is capable of!

 

Don't quite understand the question, I'm new to all this. Can you break this down for me?
I'm running a k&n lid that flows through the factory hood scoop vent, with a stock lower base, and an IAT sensor in the base.

 

I have not tried it yet. Which table values were you using before? Right now I am using values that go from 100 at 0 Gm/sec, down to 70 at 255 Gm/sec. The 3001 table goes from 20 at 0Gm/sec to 0 at 96 Gm/sec. I will try it out and let you know.

The values of 100 and 70 constitute the % range for the CTS to IAT filter. The table values from 0 to 255 Gm/sec (Grams per second) is the air flow through the engine.

The CTS vs IAT filter is explained pretty well in this thread... https://www.thirdgen.org/forums/diy-...ng-ebl-12.html . I dont remember which page is is on, but it is near the begining.

 

The values of 100 and 70 constitute the % range for the CTS to IAT filter. The table values from 0 to 255 Gm/sec (Grams per second) is the air flow through the engine.

The CTS vs IAT filter is explained pretty well in this thread... https://www.thirdgen.org/forums/diy-...ng-ebl-12.html . I dont remember which page is is on, but it is near the begining.[/quote]


Thank you I will check that out. You are running a tbi set up right? I did not know that there was a table that calculates airflow. How is this done without a MAF?

 

CID of engine and RPM it is running at? I dont think barometric pressure is used. Maybe density is not important as the 02 sensor handles that in PW.

 

The values of 100 and 70 constitute the % range for the CTS to IAT filter. The table values from 0 to 255 Gm/sec (Grams per second) is the air flow through the engine.

The CTS vs IAT filter is explained pretty well in this thread... https://www.thirdgen.org/forums/diy-...ng-ebl-12.html . I dont remember which page is is on, but it is near the begining.[/quote]


My tables are no where near that. I checked the link, and did a search on the topic, but I don't see much info on it. What's the purpose of a filter hear? You have to absolutes technically

 

Filters I believe generically affect the onset of the event and possibly the duration. BPC filter was recently in a thread. It blends the changes that occurfor movement from one value to another in the table.

AE has a filter. Smaller values event occurs quicker and duration lasts longer. Possibly same on IAT/Coolant.

 

Off the top of my head it uses the displacement value, VE%, RPM, and I think the MAP value. It is fairly close to the true airflow, but it isn't real important for it to be accurate. A ball pack number is good enough for what it is used for.

RBob.

 

The BPC filter is to slow down the response to changes in BPC. The MAP and ECM respond more quickly then a FPR. So the filter is used to help match the two together so that the BPC reflects what the actual fuel pressure is. It is only really needed when running a VRFPR.

RBob.

 

Thank you RBOB! That makes since to me.


Hey BEAST, you said you have a lt4 hot cam right? That's what I'm running too, I have a little different head set up, but our engines are fairly similar. The 3001 bin has lots more timing and lots less fuel, it really made my engine more responsive at light accel. and cruise. I've since removed a little more fuel, and toned down some sa multipliers just a little, for a minor detonation under certain conditions.