knock when cruising?

[dan2288]

I have my stock boost guage set to read knock. When I'm cruising in 4th(auto) and hit some low boost (5psi) trying to speed up, I notice that its getting some knock. Any ideas?

 

[wangboy925]

If its only 5psi then its most likely phantom knock. You can try to put some racing gas in it and try the same thing (100+ octane) to see if it knocks again.

 

[DSM1G90]

Sounds like timing is way off, or system is running terribly lean for 5 psi shouldn't cause any knock if system was tuned right - no matter what premium fuel is used.

 

[dan2288]

well the car seems to run real good. Maybe it is just phantom knock, but its still pulling my timing. I have a keydiver chip with a stock 2g timing map on it. Any way to see if its just phantom knock?