Ok I hope this helps out some folks.
The Issue, I had to keep doing fuse pulls on my camaro like every other day on my stock tune running 93 gas.
Ok so yesterday I put my stock tune back on my car and went out and did a scan. I had knock retard of up to 3.2 and it was all over the place, even at some half throttle runs. The out side temp was 78 on this run. With the stock tune.
I got back home and called the guys over to help remove the rear cats. we removed the mid pipes and removed the rear cats. I went for a similar run scanning the whole time. The kr was not as much, but it was still there. 82 degrees out side now
So, we removed the mid pipes again and removed the front cats. This time the stock tune showed 0 KR. no matter how I hammered on the car I could not get it to show any thing.. Out side temp was 89 on the last scanning that was done. So I put Ted tune back on my car and ran the car again. Same result, no Kr no matter what I did.
So by doing this I am to conclude, that there are some cars out there, that will have knock retard from the factory.
This would make the car default to a lower octain timing table no matter what kind of gas we put in the car.
The solution is High flow cats, no cats, headders and high flow cats is the best. I know I will be ordering some ASAP. Now my car runs like a monster and sounds great if I might add.
I hope this helps some people out...
