For the Cheapos Among Us

Hi folks, not sure if this will interest anyone on here, but here goes! For those of you that may want BOVs, but dont want to pay the 300+ that it costs see below!

Me and a friend of mine fitted some Apexi BOVs to his Z the other day, and it ran like poo, anyway, it turned out one of the BOVs was faulty and sticking open a little bit, letting air out/in and freaking everything out, so they are been sent back.

Anyway, after taking them off and putting the Re-circs back on, I suggested to him that I thought of a cheaper way to fit dump valves (all he wants them for is the whoosh noise, ricey, but his car).

So heres what you do, although you need to be running an Induction kit to do this, with the airbox removed, and not twin pop (tho if you have twin pop, you probably aint cheap and have done this the correct way ;) )

What you need

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2 Bailey EVO Dual Piston Dump Valves (Or Equivalent)

2 Short Runs of 25mm Hose

6 29mm Juby Clip

2 4mm T-Piecies

~2 Foot of 4mm Piping

1. Remove the Air Filter, MAF, and T Pipe that it connects to.

2. Disconnect the return hoses from the recircs that route back to the pre turbo intake.

3. Plug these pipes, we used some 27mm Rubber door stops and a juby clip, only ever subject to a few PSI vacuum I would think, so plenty secure.

4. Fit one of the 25mm Hose to the end of the Recirc where the old hose used to go, and fit the dump valve to the other end of it, tighten them up

5. Bit fiddly this, but remove the vacuum hose from the top of the recirc, fit a 4mm T Piece to it, then run some of the 4mm pipe from the T Piece to the recirc and then to the dump valve you are fitting.

Do the same on the other side, fit the intake pipe, maf and filter and off you go :)

It works a treat, sounds good, and cost just shy of £180 :) My mate was well happy :)

After doing it, I thought of a way to make it cheaper, instead of 2 dumps, just use one, fit the valve to an alloy T-Piece and run piping from the 2 recircs to T-Piece and the vacuum from 1 of the recircs...this method works out at about £110 but maybe get problems if one turbo pressure drops off before the other and some air might not dump, I havent tried this (and im haapy with my recircs) but just an idea.

Hope this helps someone out there :)

Dan