Av fuel and boost

[ridehard1212]

i have a low boost (stock engine/no shim) i plan on not running above 8lbs boost.. i was going to run pump 94.. but looks like i can get av for only about 30 cents more a litre very easy...

my question is if i were to upgrade to a boost-it system down the road, what sort of boost could i run VERY safely at say 4000-7000 feet?? again i dont want to be on the edge..

10/11lbs??? i think MPI suggest 50/50 at 12lbs so i would think 100% AV at 10/11 should be pretty safe?

Thanks in advance

 

[irondave86]

I run 15 to 13 lbs on strait race @ 3 -6k. IMO 10-11 lbs would be safe on av gas at that elevation.

 

[ridehard1212]

thanks.. with no shim??

 

[ridehard1212]

100 race?? 110?

 

[irondave86]

110 race. unshimmed. I think 15 psi is pushing the limits of an unshimmed motor. So i use race fuel as cheap insurance. BUT if i remember correct MODSLEDER on here was running 12 psi on av @ 3-6k. on a side note i have a boost it kit im thinking about installing, i think his kit is the way to go.