1st time to the mountains

[rla1]

Looking for info from the more experienced.I have a 07 apex with a stage 2 mpi s/c that I'm taking to the mountains for the 1st time.Will be riding around 9000 ft.have been told I do not have to run race gas at that elevation just premium 91+,also that the sled will not run unless I cut a hole in the hood and extend the intake tube out.

 

[Jbat]

how much boost are you running and do you have a head shim? And we extended all our intakes out the hood even on the stage 1 because they couldn't get enough air under the hood.

 

[rla1]

how much boost are you running and do you have a head shim? And we extended all our intakes out the hood even on the stage 1 because they couldn't get enough air under the hood.

Running 14psi boost,no head shim,10:1 low comp pistons,falicon rods,falicon crank,bosch piggy back fuel pump,gems fuel controller,a/fr wide band 02

 

[Jbat]

If your riding at 9000 feet and you have low compression pistons you can get away with running straight 91 octane. It wouldn't hurt to mix a couple gallons of race gas in a tankful to be on the safe side but it isn't necessary

 

[rla1]

Would you suggest just using gems high altitude settings and tweek mode 6(altitude comp) once I am up there and leave clutch alone.with s/c I would think I would be able to keep rpm's up?

 

[Ratpack]

I have had mine in the mountains without cutting the hole. Have thought about but I did not want a hole in the hood. I'm sure it would be nice with better air.