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Discussion Starter #1
well i traded my supercharger for a turbo kit and bolted everything on and the turbo was not boosting checked the wastegate and bov looks good checked cold side piping no leaks can hear the turbo spooling but no boost and car runs really rough so i bought a brand new turbo from turbonetics the gtk-850 and still no boost i know i got a leak on my cross pipe but will that not let it boost sorry new to turbo or wat else will not let it boost
 

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Sounds like a coldside leak somewhere between the turbo and manifold, they can be tricky. I had a leak one time, made zero boost, could hear th turbo spool and no exhaust leaks. I checked all clamps and couplers and everything looked good and was tight. I was loosing my mind trying to find it lol. Eventually I just took all the piping off and reinstalled and clamped everything, and bam, Full boost again and never had an issue after.
 

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Discussion Starter #3
i did that twice u think my exuast leak from my cross tube would not let it boost plus i replace my wastegate yeah its a cheap one but it should still make boost the only other thing i can think of is that is in the wrong place cuase most kits have it on the cross pipe and mine is on the passenger header right were the turbo bolts on
 

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i did that twice u think my exuast leak from my cross tube would not let it boost plus i replace my wastegate yeah its a cheap one but it should still make boost the only other thing i can think of is that is in the wrong place cuase most kits have it on the cross pipe and mine is on the passenger header right were the turbo bolts on
What size spring in your wastegate are you running? I have a 7pound spring in mine and when I drove it around it barley made any boost had to put a manual controller. Also is the bov setup right it? Could be opening and letting pressure out
 

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Discussion Starter #5
i have a 14 psi 1 bar springs and not sure both the wastegate and bov is a ebay cheap #### yeah i know i went the cheap route and now paying for it its a emusia wastegate and a wanna be tial knock off bov
 

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Might be a dumb question but are driving it and getting no boost or just reving the motor in park?
 

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If a wategate wasn't working properly, it would stay shut, which means lots of boost. Form my experience even a larger exhuast leak which will be very noticebale ie loud and show black soot coming out from the leak area would not cause a no boost scenario, just lower the peak boost some and prolong spool.
 

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Discussion Starter #8
Yes was driving around town and no boost in any gear and car feels like its hesitating when I put a load on it funny thing is that it ran great when I was supercharged and all I did was swap to a turbo and switched to a blow thru maf from pro m and now car r
uns like ####
 

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Discussion Starter #9
And yeah exuast leak is very loud and annoying and leaks on both v band clampps on the cross pipe tried everything and it still leaks bad you think that could be the problem
 

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And yeah exuast leak is very loud and annoying and leaks on both v band clampps on the cross pipe tried everything and it still leaks bad you think that could be the problem
A big exhaust leak is basically the same thing as a wastegate staying open, so yeah a big exhaust leak will cause no boost. You need ZERO exhaust leaks between the motor and turbo.
 

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Discussion Starter #11
Aight thanks will take it to the exuast shop should I stay with v band or cut and put a 3bolt flange
 

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Discussion Starter #12
Well picked it from the exuast shop and nowi got about 5 _7 pounds but only boost in 3rd gear and upp its suppouse to be at 14 psi checked all cold side piping and doesnt look like its leaking wat else would cause it to sputter and not boost all the way
 

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What are your plugs gapped at, and did you retune it after you swapped mass air meters? If you didn't, you've found your problem.
 

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Discussion Starter #14

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Discussion Starter #15
Its got the same tune wen I was supercharged
 

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Tune could possibly be the culprit... Me being an idiot when I installed my kit the first time forgot to put the fire ring into the wastegate causing it to be wide open. Lol easy fix though.
 

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Discussion Starter #17
Yeah checked that and it has the fire ring
 

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Discussion Starter #19
Aite will tr that today after work
 

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Discussion Starter #20
I put base timing to 4 and ran even worse so put it back to10 and went back on the freeway did about 3 or 4 3rd gear pulls and woth my pms got a/f to 11.4_11.8 but still lags and only boost In 3 rd gear or higher and hesitates still wot timing is between 16 and20 degrees dont know wats going on
 
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