boosting issues
#1
Full Member
Thread Starter
iTrader: (2)
Join Date: Feb 2009
Location: Ontario
Posts: 222
Likes: 0
Received 0 Likes
on
0 Posts
boosting issues
stock twins
street port engine
simplified vacuum line
pfc
full exhaust
boost controller evc ez
99 spec y pipe
ok here is my issue
5 psi of boost only lol
i dont have any vacuum leaks....did it with a smoke tester
the prob plus a video
throughout my whole rev range i get 5psi boost at wot in all gears
http://www.youtube.com/watch?v=1PWKklZqGvg
please any comments or anything would be appreciated
and i have also searched these forums on what it could be....im a newb to turbo applications for cars my background is a aircraft mech
street port engine
simplified vacuum line
pfc
full exhaust
boost controller evc ez
99 spec y pipe
ok here is my issue
5 psi of boost only lol
i dont have any vacuum leaks....did it with a smoke tester
the prob plus a video
throughout my whole rev range i get 5psi boost at wot in all gears
http://www.youtube.com/watch?v=1PWKklZqGvg
please any comments or anything would be appreciated
and i have also searched these forums on what it could be....im a newb to turbo applications for cars my background is a aircraft mech
#2
Rotary Enthusiast
Not having a vacuum leak does NOT mean you dont have a boost leak. One of the most common places to get a boost leak, the corrogated pipes before the throttle boddy elbow never see vacuum, only boost.
Make the home depot boost leak testor.
http://forums.evolutionm.net/evo-how...er-5-02-a.html
Wastegate spring is 7psi so anything below that almost garantees a boost leak.
Make the home depot boost leak testor.
http://forums.evolutionm.net/evo-how...er-5-02-a.html
Wastegate spring is 7psi so anything below that almost garantees a boost leak.
#5
Rotary Enthusiast
iTrader: (2)
Possibly a bad turbo pre-control solenoid.
When I was diagnosing a boost issue I had, one of the troubleshooting steps we took was to unhook the connector from the pre-control. Under these conditions I would not boost over 5psi.
I'm not promising that's the problem, but it is a symptom I had when I unhooked mine.
-Geoff
When I was diagnosing a boost issue I had, one of the troubleshooting steps we took was to unhook the connector from the pre-control. Under these conditions I would not boost over 5psi.
I'm not promising that's the problem, but it is a symptom I had when I unhooked mine.
-Geoff
#7
Full Member
Thread Starter
iTrader: (2)
Join Date: Feb 2009
Location: Ontario
Posts: 222
Likes: 0
Received 0 Likes
on
0 Posts
thanks for getting back to me
ok, so a few things i should mention.
bought a set of turbo's... switched them over and it did the exact same thing.
my stock bov, does not work..but when i put it into my buddies car..it works just fine and when i put his on mine, it did the same thing. it has no type of blow off. I get some type of funny noise when i let off the gas well im in boost.
i had a hole in my gas tank from a amp install...that was fixed (and the company paid for everything even with rental car ) and it brought my boost up to 7 psi but brings it up slowly.
ok, so a few things i should mention.
bought a set of turbo's... switched them over and it did the exact same thing.
my stock bov, does not work..but when i put it into my buddies car..it works just fine and when i put his on mine, it did the same thing. it has no type of blow off. I get some type of funny noise when i let off the gas well im in boost.
i had a hole in my gas tank from a amp install...that was fixed (and the company paid for everything even with rental car ) and it brought my boost up to 7 psi but brings it up slowly.
Trending Topics
#9
Full Member
Thread Starter
iTrader: (2)
Join Date: Feb 2009
Location: Ontario
Posts: 222
Likes: 0
Received 0 Likes
on
0 Posts
ok this problem is solved! and for anyone that wants to know, i had to follow the simplified diagram, it turns out when i took my car in to do a smoke test they broke a 5 port T and didnt tell me... so i was looking around and following all the vacuum hoses and it was all fucked up in there lol they used 4 different 3 port T's and they also put the check valve in the wrong location..and backwards lol
so i put another 5 port t in there, and i put the check valve in the right location and now....and thank god that fixed it lol
thanks for your help everyone
so i put another 5 port t in there, and i put the check valve in the right location and now....and thank god that fixed it lol
thanks for your help everyone
Thread
Thread Starter
Forum
Replies
Last Post