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Fitting a dump valve

Hello mates, I need some help. I am in the process of fitting a dump valve in my Megane 225, thanks to the information you have posted now I am confident in the process I must follow, but still I need some information about the bore of the hoses needed in this job, the vacuum and the T-piece; finally which valve should I use a Bailey DV24 or DV26?

Many thanks and enjoy the power of the Megane 225.
 
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I got my gauge coming off of the wastegate vaccum pipe but dont think this is correct as im in negative figures at the moment -0.5 at idle then -0.7 when its running and then -0.3 when i boot it ?!
 
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anyone else experienced a wierd noise just prior to the valve dumping, its like a whoomp sound, strange!!! i have the blanking plate fitted and the valve piped up correctly. any ideas??? its a forge valve
 

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admiral own bell i think and they charged me about £50-£100 cant remeber they will insure you with it but you'll have to pay for it mate. Didnt bother fitting one to the new megane tho, like the standard setup plus saves me paying for it on the policy.
 

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Needs help on two things;
when putting on the blanking plate do i just put the hose which went to the original bov to my new hks?
And can anyone tell me what size are the bolts on the original bov so i can buy this flexible special tool to help me with it :)

Thanks!
 

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Premium Member
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1,214 Posts
Needs help on two things;
when putting on the blanking plate do i just put the hose which went to the original bov to my new hks?
And can anyone tell me what size are the bolts on the original bov so i can buy this flexible special tool to help me with it :)

Thanks!
1) yes, aftere u pull the original recirc valve and piping off, you will be left with an open connection, so you just connect that to your HKS with some vacuum piping.


2) i remember someone saying that the bolt head size is the same as the bolts that hold the heatshield in place.
 
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