HELP!!!! Way too much knock even on stock tune

[stevep]

Can someone please take a look at these logs. I have had one CMR tuner look at them and he is very concerned. He says knock got up to 15 on the 91 CAI canned tune and my car is even pulling 2-3 degrees timing on stock tune. Something is way wrong. I need help.

[mikel]

Got a catch can?

If not, you need one for starters....may be a good idea to try some different fuel brands.

[stevep]

catch can on the way. but would it cause even that much on the stock tune?

[brandy16]

Try a different brand of fuel. Go with a name brand not one of the cheap off brands. I do not know where you live but I do ok with shell or chevron, or union 76. Make sure you are buying 91 oct.