I have been chasing my tail doing open loop maf tunes. Today i finally figured out what was happening. With tha a/c off i was getting a 14.7 afr then i turned my a/c on and my afr went rich, fluctuating between 13.8 and 14.2. Yes i have all my open loop tables shooting for 14.7 afr. Is there something wrong with my ngk wideband? Anyone else see this before?
Hey...
I would make sure that you have all tables commanding 1 or 14.7. under engine-fuel control- OLCL
There may be a table in there that you missed. I would just double check.
The Tuning School Graduate Class of 2009
Speed Density TT 97 Forged 347 Vette
Speed Density 2.5bar 07 Z06 Forged 427LSX TURBO
Both self tuned running on E85
Thanks Adam, I did, Im commanding stoich but my actual changes with the a/c on. I know my ground is good because im grounded at the alternator bracket which is attatched to the block. Im going to let the car cool down to see if its still happening.
My guess is voltage fluctuations to the wideband control box is causing this.
Formerly known as RWTD
Toys: '22 Tesla Model S Plaid / '20 Chevy Duramax / ?20 Sea-Doo RXT-X (2)
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