turbo teg overboosting ????

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Old Sep 30, 2012 | 05:18 PM
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Post turbo teg overboosting ???? pics inside

i just recently had my car tuned made lil under 500 whp and held boost fine , out of know where my car starts getting boost creep like crazy , i put a 7lb spring in wastegate and it still boost all the way to 20 lbs , i have vacuum source off turbo directly to side port of wastegate , i have a jdl auto design ramhorn , with tial mvs 38mm wastegate , any ideas why it is doing that ?? it would hold boost fine before
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Last edited by bbrian; Oct 3, 2012 at 01:20 PM.
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Old Sep 30, 2012 | 05:23 PM
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Default Re: turbo teg overboosting ????

(type of) boost controller? How much boost have u been running? And what else did u change so far? The Yogis will need more of the story, man.

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Old Sep 30, 2012 | 05:35 PM
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Default Re: turbo teg overboosting ????

i have a hondata solenoid , but i completely unhooked it to narrow down problem , had a 13lb spring in before and was still boosting to 20 lbs , now i have a 7lb spring in it , but my car never use to do this out of knowwhere it started overboosting like crazy
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Old Sep 30, 2012 | 05:50 PM
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Default Re: turbo teg overboosting ????

oh yea and when i do a pull with 7 lb spring in it will hold 7lbs for a second then at like 7 grand it boost up to 20 lbs
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Old Sep 30, 2012 | 06:42 PM
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Default Re: turbo teg overboosting ????

the problem occurred when you changed the spring out. i imagine your tune was based off the spring that was in it.

not sure if your tuned on s300, neptune, AEM or some fuel management system. but when you change the spring rate the boost solenoid percentage would need to be adjusted as well.
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Old Oct 1, 2012 | 12:20 PM
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Default Re: turbo teg overboosting ????

No solenoid / boost controller is hooked up l
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Old Oct 1, 2012 | 12:35 PM
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Default Re: turbo teg overboosting ????

car is on s300 on spring pressure no solenoid is hooked up , i unhooked it to find my problem of course its still doing it ,,,, bump

Last edited by bbrian; Oct 1, 2012 at 12:59 PM.
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Old Oct 2, 2012 | 01:54 AM
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Default Re: turbo teg overboosting ????

Sounds like you have the turbo going to the top port on the WG instead of to the bottom port which would give you spring psi. Try taking WG off and making sure it moves also, 7psi is not to hard to press in on.
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Old Oct 2, 2012 | 06:00 PM
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Default Re: turbo teg overboosting ????

i have my boost source from turbo to side port of wastegate !!!!im thinking one of my pushlok fittings is leaking somewhere maybe
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Old Oct 3, 2012 | 01:20 PM
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Default Re: turbo teg overboosting ????

bump
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Old Oct 3, 2012 | 02:53 PM
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Default Re: turbo teg overboosting ????

Did you actually check anything as suggested? We can only do 20% of the work from behind the computer screen. Your lazy butf has to do the other 80%...
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Old Oct 3, 2012 | 06:12 PM
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Default Re: turbo teg overboosting ????

nothing was suggested execept ppl asking if i had a boost controller , which i stated yes but isnt hooked up to narrow one thing down ???? what else was suggested ??
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Old Oct 3, 2012 | 06:15 PM
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Default Re: turbo teg overboosting ????

the problem didnt occur when i chnaged springs out because it was doing it with the spring i had in it before , this happened out of knowhere , that was the reason why i chnaged springs to see if it would help
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Old Oct 3, 2012 | 06:37 PM
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Default Re: turbo teg overboosting ????

Originally Posted by fcluddington
Try taking WG off and making sure it moves also, 7psi is not to hard to press in on.
Obviously you didn't read the help too well... The system was working, now it isn't. Electronic components removed to eliminate that side of things. Wastegate System was checked for leaks and is plumbed correctly... what does that leave other than some sort of mechanical failure or user/installer error. Pull the wastegate off and perform the suggested checks. They aren't as complicated as you are making them out to be.
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Old Oct 4, 2012 | 04:47 AM
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Default Re: turbo teg overboosting ????

disconnect the bottom hose and put shop air to it and see if the wastegate is opening
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Old Oct 4, 2012 | 06:35 PM
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Default Re: turbo teg overboosting ????

took the wastegate apart , didnt see any defects or anything out of ordinary , reinstalled and still creeps like crazy ...bump
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Old Oct 4, 2012 | 07:51 PM
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Default Re: turbo teg overboosting ????

You need to make sure the two unused lower air ports are plugged.


Last edited by Muckman; Oct 4, 2012 at 09:22 PM.
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Old Oct 4, 2012 | 08:37 PM
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Default Re: turbo teg overboosting ????

You can clearly see from the picture they are plugged Muckman...

OP - Just out of curiosity, where are you getting your boost readings from and what type of equipment are you using to get them?
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Old Oct 4, 2012 | 09:24 PM
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Default Re: turbo teg overboosting ????

Theres 3 air ports. His pictures only show 2 ports. His symptoms act like the wastegate is not seeing the boost reference. Either its leaking out the port or the hose. Try a different hose.
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Old Oct 4, 2012 | 11:09 PM
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Default Re: turbo teg overboosting ????

sounds like you have a vacuum leak, close those extra bottom ports and see what happen
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Old Oct 5, 2012 | 02:40 AM
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Default Re: turbo teg overboosting ????

Interesting
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Old Oct 5, 2012 | 12:58 PM
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Default Re: turbo teg overboosting ????

all 3 ports are capped off , the other ports are for the watercooled stuff which isnt needed ,
i have the one vaccum source on the side directly to my turbo , i have a autometer boost gauge and recorded some datalog passes and u can clearly feel the extra boost when it hits about 7500 ,, bump oh yea and omni power 4 bar map sensor

Last edited by bbrian; Oct 5, 2012 at 01:19 PM.
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Old Oct 5, 2012 | 01:04 PM
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Default Re: turbo teg overboosting ????

i just noticed on my car one of my top ports is plugged off , shoukld both be removed and open to run spring pressure ??
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Old Oct 5, 2012 | 04:17 PM
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Default Re: turbo teg overboosting ????

The one is capped off because you are using a boost controller. I would be more concerned that the push-lock fitting possibly melted. Completely remove anything that may be installed in the top 2 ports. Better yet, when you remove the push-lock fitting try to blow through it.
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Old Oct 5, 2012 | 04:52 PM
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Default Re: turbo teg overboosting ????

OR its not a 7psi spring as he believes.
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