i have my dump valve on that little black pipe that comes of the boost pipe. i just used a t piece from a plumbers and a bit if samco. no need to weld and looks and works well enough

Ive just fitted my dump valve. Ive done it the way you suggest for now and mounted it on the black pipe that comes off the boost pipe. Will this give the same effect as putting it on the boost pipe itself as its not very loud. Or do i just need to adjust the tension on the dump valve spring?? Its a baileys dv26

mine isnt very loud too. i think my bov is the same as yours. its the twin piston one without the crazy trumpet. its probably not that loud cos its only venting off about 7 psi whereas more powerfull cars with louder valves have to let more are out at a greater pressure- hence more noise.

I had loadsa problems with my BOV - Wasn't making any real noise - just either a strangled gasp or if taking out some washers, a slow pisssssssssshhhht! :eek: - has 2 crazy trumpets too! :D

Luckily, S13Eater brought me a lovely big 'T' piece to replace my crappy Halford's one (was smaller diameter) - It can now set car alarms off and cause rapid retreats of birds, cats, people etc... :p LOL! - Nice one Shaun!

If it gets too much, I can pop a blanking plate over one (unscrewable) trumpet, so can turn it into a fuzz-pleaser if need be, but it's the first BOV I've had where it actually works fine, and the diaphram etc haven't been mashed n' smashed by high boost pressures, so it gets my vote.... (Haven't got a piccie, but it's exactly the same as S13Eater's, only with one trumpet more than it reasonably needs! :p )