Boost Is Weird Fellas
02-01-2004 | 06:07 PM
#1
Thread Starter
Senior Member
Joined: Jul 2003
Posts: 1,882
Ive got a 90 TII with the following:
-Apexi Power Intake
-Custom 3" full exhaust no cats
-Mechanical boost guage
That's about all that would deal with boost.
It doesn't run the full 8 lbs of boost its supposed to.Something electric must be messed up.
In 1st it runs to 5.5lbs
In 2nd it runs to 5.5lbs
In 3rd it runs to like 6 lbs and stays
In 4th on the freeway it goes immediately to like 7.5 lbs and stays there,doesn't creep.
In 5th maybe like 6.5 or 7 lbs again (I haven't had it at like 6k in 5th gear though).
Anyone know why it runs immediately up to 7.5 in 4th,but won't do that in any other gear at all?It's stopping right at 5.5 lbs before,where the wastegate is mechanically sprung.It's really really odd...and I don't think it's creeping which is odd.
-Apexi Power Intake
-Custom 3" full exhaust no cats
-Mechanical boost guage
That's about all that would deal with boost.
It doesn't run the full 8 lbs of boost its supposed to.Something electric must be messed up.
In 1st it runs to 5.5lbs
In 2nd it runs to 5.5lbs
In 3rd it runs to like 6 lbs and stays
In 4th on the freeway it goes immediately to like 7.5 lbs and stays there,doesn't creep.
In 5th maybe like 6.5 or 7 lbs again (I haven't had it at like 6k in 5th gear though).
Anyone know why it runs immediately up to 7.5 in 4th,but won't do that in any other gear at all?It's stopping right at 5.5 lbs before,where the wastegate is mechanically sprung.It's really really odd...and I don't think it's creeping which is odd.
02-01-2004 | 06:10 PM
#2
Senior Member
Joined: Oct 2003
Posts: 419
From: east meadow, new york
did you port your wastegate? that leads to boostcreep.
02-01-2004 | 06:20 PM
#3
Senior Member
Joined: May 2003
Posts: 989
From: Dover DE
post a pic of your engine bay I have a little bit of an idea why it is doing this, but I need to look at something first.
02-01-2004 | 06:40 PM
#4
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Joined: Jul 2003
Posts: 1,882
Originally Posted by g_dripht-alex' date='Feb 1 2004, 03:10 PM
did you port your wastegate? that leads to boostcreep.
02-01-2004 | 06:47 PM
#5
Senior Member
Joined: Oct 2003
Posts: 419
From: east meadow, new york
yeah um port your wastegate, it could creep higher than that...alot higher.
02-01-2004 | 06:52 PM
#6
Senior Member
Joined: Oct 2003
Posts: 1,420
From: Boston Ma.
Originally Posted by g_dripht-alex' date='Feb 1 2004, 03:47 PM
yeah um port your wastegate, it could creep higher than that...alot higher.
02-01-2004 | 06:59 PM
#8
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Joined: Oct 2003
Posts: 1,420
From: Boston Ma.
Originally Posted by 4RotorRocket' date='Feb 1 2004, 03:54 PM
hahaha
02-01-2004 | 08:20 PM
#9
Senior Member
Joined: Oct 2003
Posts: 419
From: east meadow, new york
why? free flowing exhaust, and nothing controling his boost, with a non ported wastegate does lead boost creep doesnt it? correct me if im wrong, i guess im stupid?
02-01-2004 | 08:30 PM
#10
Thread Starter
Senior Member
Joined: Jul 2003
Posts: 1,882
so im gonna need a boost controller