4 to 1 dump valve mod

Ive been doing some reading on the Canadian and Australian GTIR sites and it seems a few people have done this mod.

Apparently an ITB turbo car needs a line to the dump valve from each individual throttle body for it to operate correctly therefor the stock vac line for the BOV is insufficient for the job

What people have beend doing on the other sites is t-ing a load of pipes together and connecting the up to the four blanked off connections used for setting up the ITB's and linking them together and then to the dump valve

I'll try and get a picture so people can see what I'm talking about, I'm just wondering if anyone else is running this set up and is it worth doing?

I have heard some say it helps prevent compressor surge and the flutter noise the BOV tends to make but on the other hand I have read a lot of people doing away with BOV's all together and claiming they are pointless and it won't damage the turbo without one but to me no BOV sounds like its going to stress the turbo no end

Here we go, here's a vid from mighty mods explaining how to do this

http://m.youtube.com/watch?v=En91CuhPqjI&desktop_uri=%2Fwatch%3Fv%3DEn91CuhPqjI

This vid was on the oc years ago a lot of people started doing it as it made the dump valves sound louder. I think the final conclusion was it doesn't really give any other benefit ill try find you the thread

Interesting, I might give it a go and see what difference it makes, it's not hard to T some bits of pipe together so I might aswell try it when I can be bothered lol

When I first got my car it was set up like that. Never tried it out though as I put it back to standard when I re-built the engine.

I'm remember reading somewhere its best to join up all the nipples on the throttle bodies instead of just having the standard nipples I've actually done that on mine as in not connected 1and2 then 3 to 4 not all in 1 and not connected to dumpvalve

mine was 4-1 and sounded shit, so ive put it back standard

Even I had this mod done made no difference so put it back to standard

Think this was covered a little while back .... and with the same outcome it made no difference iirc