... 20 degrees ignition advance... That's what I am running on 91 octane.

How much timing are you running at this RPM and this boost level? The J&S is pulling 6 degrees for some reason.

AFR is 11:1.

 

I'll plug in the laptop on my way home from work and tell ya That is unless you know off hand the conversion factor from Kpa to Kpsi to kg/cm^2.

 

KPA is just a scale of 14.7 from 1 to 100... 100KPA is 0 vacuum. 200 KPA is 14.7 psi or whatever....

 

Not answering the Q, but Online Conversions may help you out here and in the future.

 

That's a little under 5psi boost. Odd that your J&S is pulling that much timing. At 4psi boost and 3700rpm i'm running 25 degrees timing advance. This is on an LS motor, stock compression, and 93 octane. A/F at 12.0.

 

not answering you question, but why are you running 11.1 A/F at that boost and rpm?

 

it's actually almost 6psi boost...

sensitivity on the J&S is at 10 o'clock.... (per Kabir's recommendation) and this is a stock 10:1 GSR.

 

Doh! My brain is racked right now so you'll have to forgive my math skills at the moment. Trying to get this damn patent together is killing my brain cells one by one.