Would A Hole In The Plumb Back Bov Pipe Do Anything

[ryan101]

As above, just wondering if it would effect anything?? It's the rubber pipe between the bov and the metal pipe that goes back into the intake??

[geraus]

yeh it would , your car would run funny.

[l_uk3y]

In theory it should create a small intake leak. Due to the fact there is no valve to stop air getting to that leak from the AFM side. Air will be measured through the AFM then have potential to go up the BOV return pipe and out the leak causing tune issues. Small leak probably wouldn't make a massive difference I wouldn't think but I'm sure it would have some effect. The larger the leak the more it will throw the tune out.

Never actually tested with a leak to prove this though.

[geraus]

stalling... and your car could even run rich, depending on how big the hole is.. just get it fixed man, change the whole pipe from the wreckers or something

[ryan101]

It's an easy fix, just need to replace it! The hole is bout 2-3mm, it's just after the bov

[GTScotT]

if its the rubber hose from the bov itself onto the return pipe just slip it off and go buy a length of the same ID hose from any auto place and replace it. simple. but dont leave it, as said it will create stuff ups on the AFM signal.

[ryan101]

it's been like it for ages. i just didn't think it would matter! but i have a hose and it will be fixed 2moz morn!

[JonnoHR31]

stalling... and your car could even run rich, depending on how big the hole is

its a leak after the afm but under boost its before the turbo (bov is closed under boost), therefore it'll make it slightly leaner all the time. but unless its a huge leak it'll still be rich overall because of the standard ecu. if the leak were after the turbo it'd be leaner off boost and richer on boost

[ryan101]

found out when i pulled it apart that there was 3 different size rubber pipes to the metal intake pipe, what a mess! all fixed now, used a radiator hose with the right bends in it! worked fantastic

[ryan101]

After replaceing the pipe it's seems to recover boost after each gear!