Good N/A Tune but...Going Supercharged I could use advice on a base tune

[tatasta]

Shawn,
I attached my latest log and related tune. I can't seem to get my VE_Table map to work. It is not displaying in kpa. Any thoughts? I attached a pic of it.
This log is a better representation of the car since my bypass valve did not work on the first run.
Thanks

[WeathermanShawn]

Bob, if I run the 'old' CALC.VE pids, this is what I can up with.This is the computation working off your LTFTBENS. You might have been in VE Units, not sure.

If you are wanting the newer CALC.VET you might want to replace the Commanded AFR with GM.EQIVRATIO. Then you may see the supported PIDS (PE MODE, CALC.SELBEN,CALC.VET) show up.

But you have maxed out your MAF. Now the good news is that since you entered PE Mode with very good Trims and your MAF accurately calibrated, so your VE Table is probably pretty accurate. I filtered out some cells, so if you want to see the same data, just reload the old CALC.VE Table Pids.

I'll attach them also (just in case).

[tatasta]

Thanks Shawn. I got the map fixed and applied the values. I added 1.5* of timing since at wot i was getting 15.5 total advance. I will log it tomorrow and see how the DYNCYLAIR and CYLAIR measure up. It is pretty rich at wot right now but, once I get the VE dialed, it should come together. It is pretty cool. Runs like N/A until you want it to boost. It is a bit scary right now. By the way, it is running 7-8 lbs of boost.

[WeathermanShawn]

Sweet.

One last item Bob. You might want to re-set the Trims once again. Looks like you might have carried a +7% Trim into some of those WOT. That will run you a little rich.

So if you can handle the new CALC.VET when you hit PE Mode/WOT the LTFTBEN will be ignored and we can get your actual AFR.

On my trusty VE Calculator at 6500 RPMS 104 kPA 512 g/s on MAF I computed a VE of ~ 137% under perfect fueling conditions!!!

[tatasta]

Thanks. I will reset the trims tomorrow. I will keep you posted.

[tatasta]

Today's log file. I reset fuel trims and got the timing cleaned up a little. AFRs are getting better. DYNCYLAIR vs CYLAIR seem to be getting better. I had to drop shift points on the latest tune (not in car yet) to avoid overspeeding the supercharger.
Thanks

[WeathermanShawn]

Bob, nice run.

I have been pondering a few things on your Tune. If I filter for PE Mode and look at your MAF Calibration Table, here is what I am thinking. There seems to be a nagging +7% LTFT from around 8375 Hz and higher. I think your Tune, AFR, and CALC.VE would look at lot better if you could enter PE Mode in either negative Trims or +/- 0.

We can't get an accurate VE or AFR until we eliminate those. What you might think of is hand-smoothing the MAF Curve above 8000 Hz, and eliminating a few of those spikes.

The other option would be to take the stock MAF Table and add +7% to the entire Table. That will keep the same slope, but probably eliminate those + Trims. It will probably get you a lot closer to your WOT AFR..

[tatasta]

Thanks Shawn. I noticed the inconsistencies in LTFT and MAF frequencies. I did smooth the B5001 table. Just not as aggressively as you did. I attached a pic of my try.
My radiator wasn't running. Interesting. i can install a supercharger and work on a tune but, I can't seem to splice wires correctly. There's always tomorrow.
Thank you

[tatasta]

Hey Shawn or joecar, if you are out there.
I put in my 2 BAR sensor and fully disabled my MAF (I think).
My new tune is attached. Is there anything you can see I missed?
The car ran pretty good on the 1 BAR tune. Just curious to see what it does now.
My MAP with key on and engine off read 85kpa. Is there somewhere that value needs to be entered? I know it is kind of a baseline. Just not sure where it needs to used.

Thank you guys!

[joecar]

Robert, what is your elevation...?

(Shawn is at significant elevation too)