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car boosting to 15psi

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Old 05-02-04, 12:24 PM
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Gremlin Hunter

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car boosting to 15psi

I only have DP and PFC w/ base maps installed.

I've only seen it, so far, in 3rd and 5th gear. Not even WOT. why cruising and giving it maybe 3/4 throttle, I will see the boost peak and stay at 15psi. How dangerous is this?
Old 05-02-04, 12:44 PM
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No good, 15 is too much for your stock ic and you also are most likely maxing out your injectors.
Old 05-02-04, 12:53 PM
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For a quick fix, just install the home depot boost controller until you purchase a better one.
Old 05-02-04, 02:12 PM
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Adjust the PFC boost settings. I would also make sure that the line from the primary turbo to the wastegate (4-5" long) is still firmly connected at both ends.
Old 05-02-04, 03:01 PM
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Originally posted by rynberg
Adjust the PFC boost settings. I would also make sure that the line from the primary turbo to the wastegate (4-5" long) is still firmly connected at both ends.
I have datalogit, I make these changes at Settings 1 tab? what should my numbers be?
Old 05-02-04, 04:29 PM
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Thats alot of boost for the stockers, I would bet what was previously stated, check your vaccuum hose that runs to the wastegate. If you lose that hose you will run about 15 psi.
Old 05-02-04, 04:31 PM
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could that hose also be the problem to:

heavy throttle in first, boost
switch to second
0-1psi boost
switch to third
0-1psi boost

?
Old 05-02-04, 09:54 PM
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Just curious, but what is the max psi is it safe to boost the stock turbo, given you have a larger front mount intercooler and big injectors?
Old 05-02-04, 10:06 PM
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dont know about safe, but i have heard of 18psi, and i know that motor is dead now.
Old 05-03-04, 07:29 AM
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Originally posted by kevinvr6
could that hose also be the problem to:

heavy throttle in first, boost
switch to second
0-1psi boost
switch to third
0-1psi boost

?
I feel for you. I had some funky boost recently too. My mechanic wound up replumbing my vac lines a few times till I wound up simplified sequential. Now I get good boost in all gears, but am having a problem controlling it. I'm doing a boost controller this week and checking the turbo control actuator solenoid.

Not sure about the hose...
Old 05-04-04, 09:49 AM
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Originally posted by Quickfini
For a quick fix, just install the home depot boost controller until you purchase a better one.
which is that?
Old 05-04-04, 10:55 AM
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Originally posted by kevinvr6
which is that?
http://www.rx7turboturbo.com/robrobi...controller.htm

Do not install the prespool controller.
Old 05-11-04, 04:08 AM
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good link
Old 05-11-04, 07:29 AM
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Originally posted by Quickfini
For a quick fix, just install the home depot boost controller until you purchase a better one.
I tried that once. I didn't know what I was looking for. So, I asked the a guy there. I said, "Hey, can you tell me where your boost controllers are at?" And he was like wtf r u talkin' about. haha. I'm just joking.
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