Boost Pressure

[nytescion]

I'm currently running a SBR GT12 at 30 psi. I get a few counts of knock at around 4k but nothin after that all the way up to 9 grand. I'm also about to buy a meth kit soon as I'm done typing this message. My question is with my mods is this too high of pressure to be running? Also when i install this meth kit can i raise my boost some more?

 

[the_mork]

As long as you aren't running out of fuel I don't see why that would be too much boost. With a good headgasket and headstuds (which it appears you have) 30psi isn't unreasonable even on a larger turbo.

Have you tried to see if your knock responds to timing changes? I see that you are running a keydiver chip so you wont have much control over that but you could potentially try retading the base timing by one or two degrees using the CAS.

 

[nytescion]

i had talked to Jeff O of dsm chips. Right now I'm only using 10 degrees timing at 7k. He said i could advance the cas to run more timing (about 5 degrees more). What would i get out of rRETARDING the timing?

 

[the_mork]

Retarding the timing would get rid of your midrange knock. I must have skipped over your mention of a meth kit which will also fix the midrange knock and let you run even more timing.