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GFB valves leaking under high boost…


Gripless

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So seems this is a thing! Found some USA forums with the same things back to 2017 where tuners won’t deal with them on aftermarket turbo setups.

 

It was fine with stock turbo and 22psi max ramping down to 15psi 

Well made and good fit. Super easy to adjust vent vs recycle.

 

Wonder if their design is the issue?

Says will have some leak through piston ring which must increase with boost pressure so once you hit 25psi or more I guess they can creep open.

https://gfb.com.au/tech/tech-articles/14-diverter-valve-leaks-the-effects-on-engine-performance-and-tms-solutions/

 

Anyone else found this?

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Well I replaced mine with a GFB Hybrid bov to fix my factory leaking bov, after a retune it definitely made a huge difference and fixed that issue

 

No leaks from mine however not running huge boost only 18 psi

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    • MrSg9Sti04

      Afternoon team,
      im new to the group first time posting. Im hoping some body can help me get my launch control all dialled in on my link g4x. Ive had the computer and car all tuned from chris at prestige awesome knowlegable guy super happy with the results but now im wanting to get my launch/anti lag all dialled in. Ive been reading multiple different forums etc all with different conflicking information which has made me nervious with what do i listen to this or that if you get what i mean. Now ive started to make myself familiar with my PClink software etc the past few weeks and im eager to learn how to do minor setups or tweaks etc so im not relieing on my tuner so much and obviously saving myself abit hurt in the back pocket. 
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      Cheers Shaun
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