Boost and altitude
Guest
Posts: n/a
Boost and altitude
Hi, next week i will go and race in the mountain and my question
is...
If i see 5 psi boost at sea level, and have no problem, can i increase boost
to lets say 7 psi and have the same result as at sea level ?
If i dont increase boost, i will run richer ? right ?
is...
If i see 5 psi boost at sea level, and have no problem, can i increase boost
to lets say 7 psi and have the same result as at sea level ?
If i dont increase boost, i will run richer ? right ?
Le Mans Master
Joined: Apr 2001
Posts: 5,475
Likes: 718
From: Black Forest CO
Re: Boost and altitude (c5norway)
Here in Colorado I live at an altitude of 7000 feet. In my experience at this altitude with a roots blower and currently a Powerdyne (not on a Vette) I loose slightly more than 2psi of boost. If the enrichment is taking into account manifold pressure, MAP sensor, you may be ok. If the enrichment is via an FMU it will probably be too rich if you loose a couple of psi of boost.
Drifting
Joined: Jan 2001
Posts: 1,511
Likes: 1
From: paradise valley az. us
Re: Boost and altitude (mforbes)
I dont know specific #'s but if you have a boost controller take it to 9 lbs the block and valve train will stand up just fine I have a worked bottom end and I'm good for 25+ havent gone past 20 havent needed it.Dont be shy go for hi simgle digits NO PROBLEM MANNN.Dave S.
Guest
Posts: n/a
Re: Boost and altitude (davidmax)
I dont know specific #'s but if you have a boost controller take it to 9 lbs the block and valve train will stand up just fine I have a worked bottom end and I'm good for 25+ havent gone past 20 havent needed it.Dont be shy go for hi simgle digits NO PROBLEM MANNN.Dave S.
what trap speed do you have on the 1/8 mile ?
Racer
Joined: Aug 2001
Posts: 270
Likes: 0
From: Crown Point IN
Re: Boost and altitude (c5norway)
Do you have a turbo or a s/c? Turbo will have a have a wastegate that will keep you at the 5psi. 5psi of boost is 5psi of boost no matter what the atmospheric pressure is. Plus the MAF should account for the thinner air anyway so you should run rich
