knock with alky

[richardv6]

running alky razor kit with fast.when i floor it wot the audible knock sensor goes off, then if i get back into it easily it will not.i am running 110 octain and alky on 6 also running double fuel pumps 2nd comes on at 10 psi. think it is being flooded at first causing knock,should i turn up 2nd pump cut on time more say 19psi.any ideas be helpful.i always hit test button before i get on it.

 

[Chuck Leeper]

What do your datalogs show?
Why the alky on top of 110??

 

[Razor]

You tried flooring it in 3rd gear? How do you know its not false knock?

Datalog it with the FAST and look at your air fuel ratio. Trim the VE tables to bring things in-line airfuel wise.

Also when you floor it, especially having high octane there is no reason to have any real knock. Even if you had 87 octane it takes a little time for knock to show. Unless your tuneup is wayyyy offf, but that would show itself really quick on a datalog, just look at the airfuel on the log. If you stab the gas and the airfuel goes to 14:1 then you have your answer and it needs more fuel.