17th July 2008, 07:16 PM
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#1 (permalink) |
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GTR Register Member
Join Date: Aug 2003
Location: North East
Posts: 710
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Boost on and off
Guys,
A mate of mine is having a problem with his R33 GTR, he popped round in it tonight and took me along the road and it's as if the boost is coming and going all the time seems worse under load. The boost builds then just drops off then builds again. He's tried my ECU in his car and checked the AFM's he's even fitted an after market boost controller and it's still the same. Any ideas what it might be? Cheers Del |
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22nd July 2008, 08:45 AM
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#2 (permalink) |
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HardcoRe GTROC Member
Join Date: Mar 2006
Location: in your mum's knicker drawer
Posts: 3,706
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Could be weak springs in the actuators or DV's not holding the pressure? Thats what i'd look at first mate.
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Ben スミグズ My GTR Development Thread - Team QM1 GTROC North West Regional Rep Life is not a journey to the grave with the goal of arriving safely in a prettily preserved body, but rather to skid in sideways in a shower of gravel and party shards - thoroughly used, utterly exhausted and loudly proclaiming "f**k me, that was brilliant!!" |
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26th July 2008, 10:27 AM
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#3 (permalink) |
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GTR Register Member
Join Date: Apr 2007
Location: greece
Posts: 585
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yes i agree it's a leak somewhere rather than the ecu or airflow meters etc
check the turbo actuators and the dump valves and also check the intercooler hoses ...are tight but it does sound like it could be the wastegates and they are opening prematurely how much preload do you have on them ? if it's the dv opening you would hear them dumping the air
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32gtr what else do i need to say ! |
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27th July 2008, 11:43 AM
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#4 (permalink) | |
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GTR Register Member
Join Date: Jul 2008
Posts: 7
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