OKay so I spent about 2 -3 hours tonight tryin to get my AFR down.
Cruising the car is perfect see about 15.2AFR at steady RPM.

Once I go WOT the car pegs MAX rich. Im gonna guess in the 10.xx zone.

I had one tune that second gear i see a 11.3 for a split second then shifted to 3rd and it went MAX rich again!

60# seimens (inj value 60)
TR6 gapped at .029
twin walbros
8# boost
91 octane
AFPR (stock settings)

My maf is maxed and I keep on scaling the PE tables and it isnt getting any better.

Anyone have input?

I am temped to take my NA tune and pull 15* timing from it and start from there.

Is PE(%wot) my only column i can dial the AFR with?

Im stumped and heading to the track in about 12h lol

Jay

 

I'm sure others with real experience will chime in soon here but I always thought you were supposed to zero out the pe tables and set it according to other tables (VE or AFR/Coolant). With the PE tables you go less, not more, to make it leaner, right? I've heard of going even negative to get it to go lean.

Do some searching with that advice and you might find better info on leaning out using the tables.

Hal

 

To start the tune with your setup, you usually set a few the temp enrichments to 16 in your operating range to make them the same then adjust the rpm enrichments to get your mixture. If you can't get lean enough, then you can set the temp table lower and try again.

Also you can evaluate the 60s at stock pressure and see if the BLMs are a litle rich asross the board you can raise the constant a little to bring the BLMs down a bit.

Are you using a BLM locker?

 

The table you need to be adjusting is the
%Change to Fuel/Air Ratio Vs. RPM at WOT

Reduce the #'s in the correct RPM range until you get it right.

 

As a general rule... reducing the PE vs. rpm cal by a value of 10, equals about 1 point drop in afr. I do not use PE vs. temp. (From LJ data). B.