For you HIGH elavation people
#1
Honda-Tech Member
Thread Starter
Join Date: Mar 2005
Location: Leland, MI, United state
Posts: 353
Likes: 0
Received 0 Likes
on
0 Posts
For you HIGH elavation people
Iwas just in steamboat/dillion this weekend with my friend in his STi, and we were getting really bad compressor surge. Anybody have a reason for this, first time driving a boosted car 9k above sea level. and ideas?
PS the car ran fine in michigan and the whole way there
Modified by Orangeciv at 5:13 PM 11/13/2007
PS the car ran fine in michigan and the whole way there
Modified by Orangeciv at 5:13 PM 11/13/2007
#4
Junior Member
Join Date: May 2004
Location: 6000 ft ASL, CO, USA
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
Re: For you HIGH elavation people (Orangeciv)
Thats what happens at high altitude. You end up running a much higher PR and hit the surge limit.
Solution: get a bigger turbo, or lower the boost.
Solution: get a bigger turbo, or lower the boost.
#5
Honda-Tech Member
Thread Starter
Join Date: Mar 2005
Location: Leland, MI, United state
Posts: 353
Likes: 0
Received 0 Likes
on
0 Posts
lower boost huh? he is running Wastegate right now on an FPGreen(15PSI) which is much bigger then stock. wut do you guys think?10 psi?
#6
Junior Member
Join Date: May 2004
Location: 6000 ft ASL, CO, USA
Posts: 64
Likes: 0
Received 0 Likes
on
0 Posts
Re: (Orangeciv)
If its at wastegate pressure, then he'll have to just not use so much throttle.
You sure its compressor surge? When I took my car up in the mountains, the BOV spring pressure was way to high and it had a hard time blowing off. So part throttle the bov wasnt opening properly. If I lived up there, I would have to run a 7psi spring in my Tial so it would blow off correctly.
You sure its compressor surge? When I took my car up in the mountains, the BOV spring pressure was way to high and it had a hard time blowing off. So part throttle the bov wasnt opening properly. If I lived up there, I would have to run a 7psi spring in my Tial so it would blow off correctly.
#7
Honda-Tech Member
Thread Starter
Join Date: Mar 2005
Location: Leland, MI, United state
Posts: 353
Likes: 0
Received 0 Likes
on
0 Posts
Im pretty sure its compressor surge. we loosened his Turbo xs RFL pretty much all the way. when he goes to shift it seems like the BOV hesitates and thats when it surges, just before it blows off. he is gonna try running an independent vac line to the BOV cuz right now it also goes to the boost gauge, which shouldnt make a diff. but wut ever. any other ideas?
Thanks for all the input
Thanks for all the input
Trending Topics
#9
Member
Re: (Orangeciv)
Get a good BOV. Hell, even the stock one is better that the shitbox XS one.
Remember, the pressure ratio changes rather dramatically with altitude to maintain the same level of 'gauge' boost pressure. Check out a compressor map and think about 15 PSI at sea level and 15 PSI at 9k feet. The compressor has to spin significantly faster to achieve that same 15 PSI of boost.
Remember, the pressure ratio changes rather dramatically with altitude to maintain the same level of 'gauge' boost pressure. Check out a compressor map and think about 15 PSI at sea level and 15 PSI at 9k feet. The compressor has to spin significantly faster to achieve that same 15 PSI of boost.
#11
Honda-Tech Member
Join Date: May 2005
Location: Colorado Springs, CO, United States
Posts: 1,772
Likes: 0
Received 0 Likes
on
0 Posts
Re: For you HIGH elavation people (Muckman)
yea, a car tuned for sea level will definately suck up here, i would try and get it retuned before trouble shooting anything with the setup.
Thread
Thread Starter
Forum
Replies
Last Post
NapTownSi
Forced Induction
4
02-17-2004 01:12 PM