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perhaps someone can lead me to the vital point.
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My engine cannot hold boost higher than 0.8 bar at higher pm.
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0.8 it holds till 7200rpm no Problem
1.0 bar starts to go down to finally 0.8 bar at about 6000rpm
1.2bar
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1.5bar
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![Image](http://i283.photobucket.com/albums/kk290/timtaylor_photos/yme%20mr2/logrun19_zps0a0724a7.jpg)
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first graph shows oil pressure, oil temp, intake temp etc
second graph blue is rpm, pink is intake pressure
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third graph egt
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forth graph throttle position sensor, the green line is fuel pressure
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I built my engine with the following specs:
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![Image](http://i283.photobucket.com/albums/kk290/timtaylor_photos/yme%20mr2/DSCN4777_zpsaf129198.jpg)
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3sgte rev3
264 JUN camshafts set to standard position like originals
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![Image](http://i283.photobucket.com/albums/kk290/timtaylor_photos/yme%20mr2/IMGP3244_zps10127c5c.jpg)
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![Image](http://i283.photobucket.com/albums/kk290/timtaylor_photos/yme%20mr2/IMGP3243_zpsc7022f84.jpg)
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![Image](http://i283.photobucket.com/albums/kk290/timtaylor_photos/yme%20mr2/IMGP3242_zps78cf096a.jpg)
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URL=http://s283.photobucket.com/user/timtay ... 6.jpg.html]
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![Image](http://i283.photobucket.com/albums/kk290/timtaylor_photos/yme%20mr2/IMGP3239_zps8b049a56.jpg)
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JUN valve springs
Mahle pistons C/R 9.0:1
Eagle con rods
ACL race bearings
arp head studs
BMC Carbon airbox
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Delphi 870 injectors
COP conversion
Denso IK24 spark plugs
head skimmed 0.2mm
HKS stopper head gasket 1.6mm
Mongoose exhaust
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BorgWarner EFR 6758 turbo
3" downpipe
custom full race style tubular manifold
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![Image](http://i283.photobucket.com/albums/kk290/timtaylor_photos/yme%20mr2/IMGP3247_zpsee5145b4.jpg)
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charge cooler
Syvecs S6 ECU
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sensors for egt, oil pressure, fuel pressure, oil temp
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My first guess was the wastegate actuator might be too weak so I switched for a high boost one.
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next try was the BMC airbox which I reülaced with the HKS intake with the
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![Sad :(](./images/smilies/icon_sad.gif)
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3rd guess exhaust too restrictive, so quick pull in 3rd gear with only the downpipe on.
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![Evil or Very Mad :evil:](./images/smilies/icon_evil.gif)
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4th checked every vacuum line, sprayed brake cleaner while idling.
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![Brick wall ](*,)](./images/smilies/eusa_wall.gif)
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manifold and turbo taken off to check for gasket failure, but both gaskets were fine and not blowing.
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double tightened every boost tube silicone coupler
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![Think :-k](./images/smilies/eusa_think.gif)
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charge cooler is a BMW custom build and rated for well over 500hp so I guess, not too restrictive
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![Shhh :-$](./images/smilies/eusa_shhh.gif)
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Is there anything I might have missed? At the moment I am making 388fwhp and with 1.5bar till redline I should easily see 4xxfwhp and won't have that nasty torque drop at 5000rpm
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![Image](http://i283.photobucket.com/albums/kk290/timtaylor_photos/yme%20mr2/DSCN4762_zps7c6f8c27.jpg)
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![Brick wall ](*,)](./images/smilies/eusa_wall.gif)
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![Think :-k](./images/smilies/eusa_think.gif)
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![Sad :(](./images/smilies/icon_sad.gif)