997 Turbo / GT2 2006–2012 Turbo discussion on the 997 model Porsche 911 Twin Turbo.
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Old Sep 23, 2009 | 05:54 PM
  #16  
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Relax, Dan is a stand up guy. He will make this right, but have to agree, this sounds like an installation problem.
 
Old Sep 23, 2009 | 06:10 PM
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Originally Posted by vividracing
Have the installation shop contact me and I will be happy to discuss with them. They had to remove parts to install your intake, BRV's, and whatever service or parts you might have done at the same time. There are many scenarios to look at. 20 or so people are running the valves from Agency Power and I have not heard of this issue. Since you are only driving in sport, have you tried it in non sport? What does your boost gauge say on the dash?

The valve is simple in its design by having a stiffer spring with piston to stay closed longer to not allow boost to leak out. It is possible you might have a loose vaccum line, pinched line, etc.

Instructions are here again FYI - http://www.vividracing.com/catalog/p...?cID=10&pID=85
i thought it was simple too; i even emailed them the assembly direction, so who knows. they may have loosened something. the only other mod done was change to BMC airfilter? the boost comes on and reads on the gauge but the lag is ridiculous; i have it floored and nothing for about 2s then it comes on, and not as strong as before. same thing happens with sport off but even weaker? if they can't solve it; gonna switch back to OEM
 
Old Sep 23, 2009 | 06:23 PM
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just sent you a PM. feel free to call me now so I can help sleuth the issue. I just got done working on my car last Sat fixing a hose leak. Maybe I can help.
 
Old Sep 23, 2009 | 06:41 PM
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Originally Posted by NeilM
just sent you a PM. feel free to call me now so I can help sleuth the issue. I just got done working on my car last Sat fixing a hose leak. Maybe I can help.
thanx will do
 
Old Sep 23, 2009 | 09:46 PM
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I was under the impression that VTG turbos didn't need aftermarket BRVs?
Scan it and see if any codes pop up.
 
Old Sep 24, 2009 | 01:28 AM
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Originally Posted by 997tt RS 2.7
sorry don't have that; i am car clueless!
Then you are like me! And because of this I think it's important to get in touch with a good local tuner; not just for the current problem with the Agency Power mod but future mods as well. So... you might want to give AWE Tuning a call -- also in Pennsylvania. They are a reputable tuner with impeccable reputation and IMO would be a great source of professional and knowledgeable help.

Don't let this problem influence your attitude towards modding. Modding could be a lot of fun, as long as you have a great tuner and use tested and proven components (not implying at all that Agency Power stuffs are neither ).
 

Last edited by cannga; Sep 24, 2009 at 01:37 AM.
Old Sep 24, 2009 | 09:25 AM
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Originally Posted by TT Surgeon
I was under the impression that VTG turbos didn't need aftermarket BRVs?
Scan it and see if any codes pop up.
Hmmmm...there are a number of forum members with the BRVs on their 997tts. If someone has the answer to this please post it!
 
Old Sep 24, 2009 | 09:28 AM
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Are there any Durametric gurus out ther? Does the boost pressure data logged show demand or actual boost? Can we run a few WOT and plot the duration between full boost between shifts?
 
Old Sep 24, 2009 | 10:42 AM
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I have them installed and i love them .. no issues whatsoever, just the sound of heaven once i put my foot down. have them checked dude i don't think they are installed properly
 
Old Sep 24, 2009 | 10:43 AM
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Originally Posted by bbywu
Are there any Durametric gurus out ther? Does the boost pressure data logged show demand or actual boost? Can we run a few WOT and plot the duration between full boost between shifts?
Bob, would you please explain what device/instrument/toy is needed to do this, the data logging, and what is involved? (I am tottally new at this.)

Also, FWIW during my dyno run and ECU tune at GIAC, there was a real probe that measures actual pressure of boost. Perhaps this imply that whatever number obtained electronically, as with durametric, is not reliable?
 
Old Sep 24, 2009 | 12:09 PM
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Originally Posted by cannga
Bob, would you please explain what device/instrument/toy is needed to do this, the data logging, and what is involved? (I am tottally new at this.)

Also, FWIW during my dyno run and ECU tune at GIAC, there was a real probe that measures actual pressure of boost. Perhaps this imply that whatever number obtained electronically, as with durametric, is not reliable?
www.durametric.com

The software will do a lot of data evaluation via the OBDII port.



 
Old Sep 24, 2009 | 12:17 PM
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When you tune on the dyno, you simply take the vaccum port that runs to the dyno computer and T it in a pressure source. The Durametric version is reading it electronically which is just as accurate. What would help out here is if the OP told us what the gauge on the dash reads to start with. If he is making 15psi to redline, no boost leaks, maybe the piston is sticking. We supply grease to make sure all is moving properly.
 
Old Sep 24, 2009 | 03:36 PM
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Originally Posted by cannga
Then you are like me! And because of this I think it's important to get in touch with a good local tuner; not just for the current problem with the Agency Power mod but future mods as well. So... you might want to give AWE Tuning a call -- also in Pennsylvania. They are a reputable tuner with impeccable reputation and IMO would be a great source of professional and knowledgeable help.

Don't let this problem influence your attitude towards modding. Modding could be a lot of fun, as long as you have a great tuner and use tested and proven components (not implying at all that Agency Power stuffs are neither ).
Ditto. AWE will definitely get a call with next mod. i've about had it! my life is too hectic to stress out about my car. i had a chance at a lambo spider and passed on it (GREAT PRICE/MINT); may have been a bad decision (that would not have needed mods)
 
Old Sep 24, 2009 | 03:44 PM
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Originally Posted by vividracing
When you tune on the dyno, you simply take the vaccum port that runs to the dyno computer and T it in a pressure source. The Durametric version is reading it electronically which is just as accurate. What would help out here is if the OP told us what the gauge on the dash reads to start with. If he is making 15psi to redline, no boost leaks, maybe the piston is sticking. We supply grease to make sure all is moving properly.
My BRVs from AP did not come with silicone grease don't know if dealer used it with assembly; you would think they would since they are PROs?
 
Old Sep 24, 2009 | 03:50 PM
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Originally Posted by vividracing
When you tune on the dyno, you simply take the vaccum port that runs to the dyno computer and T it in a pressure source. The Durametric version is reading it electronically which is just as accurate. What would help out here is if the OP told us what the gauge on the dash reads to start with. If he is making 15psi to redline, no boost leaks, maybe the piston is sticking. We supply grease to make sure all is moving properly.
for the THIRD time; i have stated this before boost does come on (though weaker after AP BRVs) after 2s!!!!!! now that's what i call LAG does not matter sport ON/OFF; same delay occurs! before BRV mod response was almost immediate; i was told it would still improve; to my SURPRISE the opposite happened. GO FIGURE?
 


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