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

[tatasta]

I got the car back together and put in the SDCL 2Bar tune. It started fine (a bit rough) at first. Two things that were immediately obvious. First, my AFR was about 15-16:1 when cold. B3647 is set around 14.5:1 and A0008 multiplier is at 1.25 at low ECT. Not sure why is was so lean. Second the idle was around 1050rpm and the car stalls when I give it throttle. Once I get it coaxed up to 1800rpm or so, I can throttle it fine. It is just a stall off-idle.
I attached my tune and a log of the car running in park.
Thank you

[tatasta]

...ttt

[tatasta]

joecar or Shawn,

Here is the first true log on the 2BAR SDCL tune. I am getting ~130kpa at WOT and screwed up by not logging VE to be able to tune over 105kpa. Idle is high and when coasting it doesn't slow down kinda like cruise control at about 30mph. When I stop in gear, it idles ~1000rpm then after you sit for a few seconds, it will idle down. I will run it again Sunday with VE logged so I can get away from 9:1AFR at WOT.
Thanks

[tatasta]

Actually, I guess with MAF disabled, I can't log VE Table, right?? What do I really need to log to dial in my Boost VE? I think my brain just locked up...

[joecar]

Yes, with no MAF you can't calculate VE.

I'll look at your files when I get on my other PC.

You need to log wideband Lambda while running in OLSD... this will allow you to correct your boot VE table (start with a guestimate boost VE table)... keep the 105kPa columns of the boot VE and main VE tables the same.

[WeathermanShawn]

Hi Bob:

It is getting someone out of my expertise level..I'm used to 1-BAR and MAF.

As Joecar stated with no MAF you can not do the CALC.VE, so I'm not sure what method you must use from this point. Perhaps you do have to go OLSD or the COS version of closed-loop...

Interesting on your Airflow. Are you saying that just adding the SC has messed up your Idle Airflow Parameters? It almost sounds like too much Airflow in your Throttle Cracker and/or Throttle Follower or the decay rates are too slow. Try taking out 25% Airflow out of each or increasing the decay rates 25% at a time.

Thats the best advice I can give you. I never even see above 85 kPa living up here, so forgive me if my expertise is lacking on your set-up...

If you ever go back to 1-BAR and MAF I can certainly help. Have fun with that new project. Good luck, Bob..

[joecar]

The methodology is this:
- need COS3 or COS5;
- Main VE using AutoVE;
- Boost VE using AutoVE;
- Idle using Idle Tuning tutorials.

[joecar]

Hi Robert,

I'm looking at your files in post #43...

Set A0012, A0013 to in-range values (511 will be good).

I see the LTFT's adding fuel at larger TP, and the wideband concurs

Try this: create VE table (both) ben maps for LTFTBEN, and filter out data below 30% TP, then paste multiply these to both VE tables, and save the file (with a new name).

Then start with same file as in post #43, and this time create ben maps for your wideband (NGK) and paste multiply to both VE tables, and compare with the saved file.

Trying running each and see what the wideband and LTFT's say.