Hi all, need some help with tuning out a bog/stumble on a twin turbo V6 with a Holley Terminator EFI system. When driving at about 3000 RPM and stabbing the throttle, the engine will sometimes go lean and hesitate. Other times it'll take off like a rocket and the AFR will be spot on. Seems like the AE vs MAP will come on intermittently. If someone could take a look at my Global File & datalogs I'd really appreciate it. Engine is a Buick 3.8L V6 twin turbo EFR7163, 22 lbs of boost, 205 lb/hr injectors, 750 HP to the wheels, tuned on MS109 unleaded, fuel pressure 43 psi. Thanks!
AE vs MAP Rate of Change WOT Stumble
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Well that's what I thought, but when I back off the Accel Enrichment it goes lean & stumbles. So I turn it back up and sometimes it will kick in and power through and run fine. It's a tall custom intake and the turbos come on hard, I can't seem to find the right balance? Also, if I roll into it easy everything is spot on.
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Should I turn off Learning and zero out all modifiers and tune the map manually? Seems like the self Learning never really stops making huge corrections even after driving for like an hour. Even when I turn down the Learn Compensation percentage. Not to mention this is a race car, so driving on the street with no A/C gets rough in Florida.
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If this is a race car, you should tune it at the track...LOL. The fuel Learning function works very well and will get your WOT AFR dialed in in just a couple of passes. AndrewInstagram: @projectgattago
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