2G Constant knock issue, low timing high knock.

[breaksdaily]

98 GSX Auto, injectors, pump, FP Red, afpr, 3" Turbo back, 272 cams, stock motor good compression.

I'm running into a constant knock issue even at only 18-22psi, -2 to 2° timing advance if that with 10.8- 11.0 afrs during the pull, I'm logging in link 4-7° of knock especially once the car is in 3rd gear....its on the rich side with literally no timing advance and lower boost levels, it seems to be highly effected by load, car is on 93 octane pump.

No idea

 

[pauleyman]

Intercooler? Has it always done this? Or is this a recent development.

 

[curt-s]

reproducable at the same rpm range or is it all over the map randomly when you hit target pai?

 

[bo0st]

You should post a log.

Also have you tried adding a little E85 (by little I mean 1 - 2 gallons) and seeing if some knock goes away?

 

[91stocker]

Yeah a log would be helpful. But too rich can cause knock, too low timing for extended periods of time can cause knock. Or it could just be phantom knock. Balance shaft out, a good rattle, could be a number of things.