Quote Originally Posted by IamBrad View Post
I see a lot about VE tuning. Is that where I should start? I've read that spark advance is one of the later things you should work on. Also, why is VE tuning so important if the PCM already adjusts fueling based on O2 sensor readings?

What would be the next things to look at after VE?

Thanks for any help.
Since you alluded that you don't need a tutorial...you need to adjust your VE tables so your datalogs return BLMs of 128+- 3. There's going to be "events" in the PCM i.e. power enrichment (PE) where the PCM locks the BLMs at 128 then provides additional fueling/timing etc so having your VEs adjusted to return a BLM of 128 is desirable.