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Without a boost controller, how can i turn up the juice

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Old 07-16-02, 03:45 PM
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Without a boost controller, how can i turn up the juice

I dont have a boost controller right now, and im running very low boost. It was set low when the motor was put in, and i want to bump it up alittle.
How can i manually do this from under the hood?
making sure its safe of course.
Old 07-16-02, 06:34 PM
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You'll either need to install a boost controller (even a manual one made out of an aquarium air valve) or put some kind of restriction in the air hose to the wastegate.
Old 07-16-02, 06:51 PM
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Re: Without a boost controller, how can i turn up the juice

Originally posted by BlackFC_NYC
I dont have a boost controller right now, and im running very low boost.
How much is low? With your mods you should be seeing over 8psi, anything less than that means something’s wrong.
It was set low when the motor was put in, and i want to bump it up alittle.
How can i manually do this from under the hood?
There’s no underhood boost adjustment, it’s controlled by the tension of the wastegate spring. What to you mean by “set low”? Apart from boost creep due to a restrictive wastegate, a boost controller is the only way to raise boost.
Old 07-16-02, 10:21 PM
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i recently had the motor checked by t&r racing in queens, and another place on long island that speciallizes in rotary. they both said that i have a strong motor, it runs smooth, compression is fine, etc..
but i have trouble getting the boost up past 5 or so.
i dont know if my cats clogged or something, maybe my wastegate is screwed up, i dont know. Btw, my timing is set alittle retarded, but i dont think that would keep the boost so low.


any ideas?
Old 07-16-02, 10:26 PM
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Originally posted by BlackFC_NYC
...i have trouble getting the boost up past 5 or so.
i dont know if my cats clogged or something...
If you have stock 15yo cats this is almost definitely the problem.
Old 07-16-02, 11:58 PM
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with a ported WG and stock cats I doubt it would go over 5. that just means the WG is doing it's jop. just get a manual boost controler. I bought one off ebay for $25.
Old 07-17-02, 01:20 AM
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Originally posted by Scott 89t2
with a ported WG and stock cats I doubt it would go over 5. that just means the WG is doing it's jop. just get a manual boost controler.
No, the cats should be taken care of first. A MBC would just force the turbo to work even harder to overcome the clogged cats.

Fix, then modify; don't modify to fix.
Old 07-18-02, 05:29 AM
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yeah my cat is probably clogged, but what else would it possibly be? cause its not my motor per say.

m
Old 07-18-02, 05:35 AM
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$20 says it's your cats. If you've never had them replaced, then ...
Old 07-18-02, 06:25 AM
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want more boost get a fish tank air valve and splice itinto you waste gate line
Old 07-19-02, 03:56 AM
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does anyone have a pic of the fish tank air valve installed?

hows the turboX manual boost control?
Old 07-23-02, 05:50 AM
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^
Old 07-23-02, 06:13 AM
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the turboXS is a great buy for the money. I would replace your cats, and you WILL see the boost go up. At least you got rid of the pre-cat and put in a DP
Old 07-23-02, 04:32 PM
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i have a 3 inch downpipe. the main must be clogged.
is there a good chance ill thin out once i clear the cat at high rpm?

mike
Old 07-23-02, 06:12 PM
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fix the cats! you can overwork/overheat the turbo by just cranking up the boost and then you can destroy all sorts of stuff. Like NZ said, fix it and buy a $40 MBC and crank your boost up to 9 or so
Old 07-24-02, 06:53 AM
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super! =) will do
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