Originally Posted by
stateman72
Not trying to deceive you . Picked up car with the owner 2 days ago , drove it around 2 days ago and mucked around with PE and timing as tune was that bad would most likely start from scratch . Yesterday morning put on dyno and went from PE off and tune did not go into knock and Afr was fine. Turned PE on with same Afr and went into knock with 6 degrees less timing . If you can point out on the 2 logs were the tune is so bad that it's going to hurt itself i'm all ears . I was only curious as i have never seen a ls tune without using PE and why it did knock when it was turned on . Just wanted to understand why using PE would cause knock on any tune. P.s i'm not asking why it made less power with timing taken out , i was taking timing out because it was going into knock with the PE on, but you should know that with your level of ability
