My knock level spiked to 100 once under 9psi of boost. Danger?? how high is the danger level???

 

Depends on what knock levels you normally see under boost.
That is very high for my car and would be true detonation on mine. If that is the highest you have ever seen then you may want to be concerned about it.

However every knock sensor is a touch different (age, the amount of goop that has dripped out, etc.) all plays part.

I see around 20-30 knock value under boost but it sometimes sky rockets to around there (75-100) during shifting and another time that I can't track down.

I know this has been covered so if you search for knock levels or values under the PFC forum you may get more answers.

 

It depends on when the knock occured. If after starting a run and before the end with no gear shifting, then worry a little. If while shifitng gears, no problem.

It get higher knock levels for normal driving then when making a boost run though 4th gear. You have to understand what is knock and what is drivetrain noise.

 

yea I think Its Plugs have fouled due to a recent PFC install with a moddest map. Also might be the Port job. but It only did it once but again I am afraid on runing the engine hard due to the fact its a Hayes engine. But I can't wait till I get it tune so I can find what the condition of the engine. Engine only has about less then 5-7k on it. Brand new Efini Turbos and Fludyne to keep it cool. I will look at my plugs when I get a chance. I had them put on like 2 months ago but I hardly drive the car. But I think it has to due with the PFC.