Thanks for the info but it sounds a bit over my head with needing a special tool.

What I am getting now is a bad, loud injector knock. At idle sometimes it is OK but other times it wakes up the neighbors.

Most times I can hear it driving down the road and even at 60mph. "snap snap snap snap snap"

Also, it sounds as though the engine is injesting more air, kind of hard to explain the sound but it sounds like an exhaust leak of sorts, only no exhaust leak and I didnt have this noise before the chain. Sounds like airflow..

I should mention at the same time I did the chain, I completely cleaned the intake manifold and cross over pipe.

Also, my MPG is down to 21.5 from 23.5, and that number was -very- consistent.

No drivability issuses, except excessive noise, possibly mechanical but I am pretty sure it's injector knock.

Its now been about 1300 miles since the chain. 3 tanks of fuel, 1 bottle of redline and 1 bottle of power service. No difference.