2nd Generation Specific 1986-1992 Discussion

Boost Is Weird Fellas

Old 02-01-2004, 05:07 PM
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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.
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Old 02-01-2004, 05:10 PM
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did you port your wastegate? that leads to boostcreep.
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Old 02-01-2004, 05:20 PM
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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.
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Old 02-01-2004, 05:40 PM
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Originally Posted by g_dripht-alex' date='Feb 1 2004, 03:10 PM
did you port your wastegate? that leads to boostcreep.
No I didn't.And sorry no pic of the engine bay I don't have a digital camera.
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Old 02-01-2004, 05:47 PM
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yeah um port your wastegate, it could creep higher than that...alot higher.
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Old 02-01-2004, 05:52 PM
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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.
Wow thats pretty stupid!
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Old 02-01-2004, 05:54 PM
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hahaha
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Old 02-01-2004, 05:59 PM
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Originally Posted by 4RotorRocket' date='Feb 1 2004, 03:54 PM
hahaha
No, i meant the reply.
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Old 02-01-2004, 07:20 PM
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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?
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Old 02-01-2004, 07:30 PM
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so im gonna need a boost controller
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