Why is my car detonating?

Setup
jdm d15b vtec
hf mani
chinese big 16g
Currently running only 6 psi
450cc dsm's
When boosting (3to 6psi) and above 5000 rpm I can clearly hear it. I'm using a detcan setup like this setup
http://www.d-series.org/forums/force...t-can-one.html

I'm using crome pro for tuning. I started with a very conservative setting of 1.25 degree retard per psi and the turbo efficiency at 180%
Iv'e installed the crome timing fix.
Also my afr's are between 13 and 15.
I can get a nice idle at 14.7ish
According to everything Ive read this is way off. I should not be close to detonating and the afr's should be much lower?

Any insight?

Thanks

 

It's detonating becasue you need more fuel. Highlight the boost portion from 2psi up and add 15% and see how it goes.

 

lol your problem is you AFR is way to lean. You tune 11.5-12 in boost