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My mistake, I did not read anywhere in the post that the converter had been removed and he was hoping to disable the efficiency test. I guess I should be happy that I haven't upgraded to the new...

skneeland, have you corrected the problem that initiated the failed catalytic converter efficiency test? Resetting the code will only work for a very short time if the problem still exists. The...

Erik, is there any plan for EFILive to implement the crank (CASE) re-learn? I have to replace my PCM due to an output being dead and really don't want to have to take it to the dealership.

By the...

I agree with TunedbyGM, 12.8-13 makes more power.

I assumed that was your method. The only flaw I see is that you have to know the impact of the vehicle specific values to make the regression accurate when you convert it to your vehicle specific...

I am very confident of my aero drag number for the Z28 @ 160 Mph is accurate. I have confirmed it using the SAE standard, several online calculators, and 2 vehicle performance software packages.
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I don't think the third order polynomial approximation formula listed previously will work. I don't see any values for the a, b, or c components of the equasion. I believe that equasion works if...

Check out the calc_pid listed in post #8. It contains the formulas needed for rolling resistance and aero drag. I have not worked on it for a long time, but am willing to continue to de-bug it with...

I posted a calculated PID for road_load horsepower a while back. It takes aero drag and rolling resistance into account. I don't have time right now to write and test the integral function that...

If it is similar to the P10 PCM, then you would need to use GM.AFR_B and change the SAE generic text file calculation for the LC-1. The value that GM.AFR gives in the P10 PCM makes no sense.

I haven't had a chance to change the VVT tables, yet. From what I remember, I reduced the PE enable Rpm to 2400 and lowered the enable TPS% (or load %) by ~10%. My logged data appears to indicate...

I interpret the VVT/PE function just as you describe. There would be no advantage to the VVT becoming active unless you were in PE. I have already adjusted the PE enable Rpm and % load to maximize...

Alright, I am finally going to pull the trigger on manipulating the VVT tables and verifying the effect on the dyno. After many hours of reading and studying the mechanics of VVT, my method will be:...

Sorry, I looked at the displayed numerals and did not follow the chart.

I guess I was lucky with my assumptions of controlling method. The values looked too high to be absolute pressure. I...

dfe1, I have some questions about the logged data. The cursor appears to be positioned at the entrance to DFCO (as seen by the 0.00 INJPW value), but the AFR_LM11 is still showing 16.4:1? My WB...

I will be installing this weekend and see what's available.

I assume the additional parameters, tables, and limiters are available for the LL8 using the V1 cable. I never upgraded to the V2...

Eric, when did you download the update? It does not appear to be there anymore.

Any status on the update release timeframe?

I didn't get a chance to compare the tune last night. I spent the entire evening testing a prototype radiator for an SCCA race car. I may have some time this weekend to spend with it.

Ryan, your...

Rhino, nice to see you here as well as on the trailvoy forum. I hope to take a look at your tune tonight. I have not adjusted any of the cam timing tables yet because I don't fully understand the...

Wow, that file has alot of PIDs slowing it down. 33 PIDs using 37 channels and updating at ~1 fps? I assume this was one of the first logs. I saw a little burst knock, but not anything like what...

I would agree that throttle opening (ie MAP) influences VE. I am not completely sure that the column headers (or the calculated load% PID) are correct in our VE tables. What are the values of MAP...

There is a very good explanation of the various forms of "VE" (used very loosely) on redhardsupra's blog site. Don't think of the VE as only volumetric efficiency. It has several other forms and...

From today at around noon "Backing down the advance lets the engine run closer to 14.7 because there is no knock." What did you mean by this statement?

VE is absolutely not an arbitrary number. ...

The VE table is actually indicating the engine's ability to completely fill the combustion chamber with air. It's nature is not to add fuel, it doesn't care about fuel. The VE tables are used to...