'94 LT1 EEHack analysis using WB

[babywag]

So I have the WB installed and 99.9% confident it's reporting accurately.
I tuned the MAF table previously using NB data and stoich of 14.3.
I changed stoich to 14.1 in the .bin after installing the WB, because it just seemed to run a little lean to me.
So analyzing some information now I come up with the below results.




Here is the Display Percentage results.



Engine really responded nicely to the stoich change, overall seems to run better.
Looks like a touch more to the MAF table, and it'll be good.
The gauge is set to display lambda, and hovers around 1.0+/- most of the time under mild driving/idle.
PE seems good until get to ~3000rpm, then it is pretty rich! 11.8-11.2 and this is not a WOT situation.
Any tips on fixing PE? AFAIK this is a completely stock engine.

[steveo]

looks like your attachments are broken

i'd start removing 3-4% at a time from the pe/rpm table above 4000rpm and see where that puts you...

personally, i'd push PE AFR as close to 13:1 as you can at high rpms, say above 4000rpm

i'd also reccommend installing the wot blm locker patch if you haven't already.

[babywag]

I dunno wth is up with pics? google photos has been an issue lately.
all 3 show on my laptop or android phone.
on my iphone they do not show. Seeing same on other forums as well.
I'll definitely play with PE table, cuz right now it is stupid rich.
Also like to say thanks again for EEHack, it's a great tool.
Even tuning with NB it got it in the ballpark. Now that I have the WB it's an even better tool.
Car runs so much better than when I bought it.

[steveo]

~12:1 isn't stupid rich by any means. ive seen stock lt1s about 11:1 wot.

you could aim for 12.5:1 and be very close to peak power while still playing it safe for unknown fuels...

glad eehack is working for you, your results look very good and you are definitely using the analyzer as intended.

consider though that you have very little high rpm data being analyzed, if you disable pe and do a bunch of high rpm playing around, you might find your pe and non-pe both gain consistency, and your pe targets will function as intended..

[babywag]

Well...looking closer @ log, picking snapshot(s) so to speak.
RPM 4489, TPS 79.2%, TARGET AFR 11.40, WB AFR 11.63, PE active Lambda = .79
RPM 4637, TPS 69.0%, TARGET AFR 11.40, WB AFR 11.06, PE active Lambda = .75
IMHO too much fuel.
I adjusted the MAF table, and I'd like to get some more data again before adjusting the PE table.
It's getting there though.

One small oddity that has been present ever since I bought it, haven't figured out yet.
Sometimes on a warm restart after sitting for a few minutes it goes real lean initially on restart.
Only momentarily less than 60 seconds, and not every restart.
The WB has verified again what I thought/felt was happening. Not sure what/where this problem actually is.

[steveo]

Not sure what/where this problem actually is.

if you get a log of that vs a normal restart, maybe you'll spot something?