The SD tuning guide mentions multiplying the stock VE table by 1.15 before starting to tune the VE tables (to protect against a too lean condition). I assume this is so you can tune from the rich to lean direction instead of vice versa.
Forum wisdom indicates that the VE tables need only minor tweaking for bolt ons (intake, headers, exhaust in this case) if at all and several of the "headers only" tunes I've reviewed from the repo confirm this.
I'll be tuning with a wideband and applying the AFR Error % to the VE table, does it make sense to start with a more reasonable VE bump, 5%-10% instead of 15%? Or log with the stock table first?
I'm only a "book learned" tuner at this point, looking for some real world experience here. Thanks!