I have heard alot of things about this I am just wondering if i should do this if i am doing a big cam and heads. I also have a pcm4less tune is there anything else i will have to change? Right now i have the LT4 hot cam kit i wonder if i am losing power becuase this isnt done. Do i have to change the knock senser too? Would i really see any benifit from this.
Thanks

 

You only need it if you are getting false knock. Bascially hook up a scan tool and see if you are getting any knock retard. If you are, and you know it's not real knock then it could help reduce that, otherwise you won't really gain anything.

 

no, you would just change to the LT4 knock module which is in the PCM.