before i install my twin power my knock reading was around 20-30 and maybe 40 max. now with the hks twin power the reading is anywhere from 40-70 and 113 max. is this normal? i have ngk 9" all around.

 

Now that you've upgraded your ignition, perhaps your timing is a little too advanced. Just a guess.

 

Might want to change to new plugs again.

Timmy

 

Stronger ignition = more complete combustion

Now you can run a little richer or simply decrease your timing a bit. I'd take it to a dyno with a wide band if I were you to make sure it's set right.

 

these plugs are new.
thank guys.
-andrew-

 

HKS doesnt give off that much Im told.. So I would say try tunning it a little and do you have a lean rich gauge? or Air/Fuel gauge? hehe TUNE it...

Jason

 

If you wanted to do a quick and easy check to see if adding fuel will help, go to the pim settings and add a couple % points. If your running the base map they should all be on 100%, bump them up to like 103% or maybe even 105% and see if that helps you out.

My guess is your getting better combustion and it can cause you to run a little leaner than you were before.

If that doesnt help then I might back off the timing a couple degrees but check the fuel first.

 

what are those number in the knock reading? can i check the knock reading without having a PFC?

 

how do i back off the timing? i turn up the fuel to 103% is it help thanks
-andrew-

 

NO. The PFC Commander will show you what the stock knock sensor is reading. It will measure the amount of knock the engine has and give you a number. Unknown what the number means, but it's a start.