Debate,i have a bailey dump valve fitted.are these better or worse than standard?last owner fitted it,but why would you fit an aftermarket one?are there any benefits.let the games begin!!

 

The best dump valve is the standard re-circ. Imo!

 

Pro's

A silly noise

Cons

A silly noise
Cost
Ruins smooth running
Slight increase in fuel use
Potential bore-wash
Backfiring (affectionately relabelled as 'pops & bangs') might cause...
Potential catalyst damage
Potential valve damage
Potential turbo damage
All for NO PERFORMANCE BENEFIT WHATSOEVER !

The car is designed with an ECU which relies on MAF and AFR readings to run smoothly, efficiently and reliably, and the OE recirculating DV is tailored to work perfectly within that set-up. What kind of idiots replace a perfectly suitable part for one which gives no extra performance and might actually reduce it, could cause reliability issues and makes the car run worse, and often for a ridiculous amount of money ?

 

Thanks guys.That settles it then.the original was in the boot along with one or two other things when i bought the car,so now its coming out of retirement and back where it belongs.(its good to have some advice from guys in the know)

 

I have a forge dump valve and am thinking about taking it off and replacing it for the standard recirc valve. Is it an easy job and how much do they cost??

Thanks

Ans

 

Just pull off the vac hose to the Forge, unbolt the 2 bolts holding it onto the IC and refit the OEM DV. Then you need to make good the recirc connection between the recirc outlet port on the OEM DV to the turbo intake hose's recirc return port. You would have had a hose for this - have you still got it?

 

No, Previous owner might tho!

i need to make some calls to the parts man again!

Ans

 

Hose may be left on the car, blanked off and tucked out the way of course......

Simon

 

Indeed. Or if not present, then simply buy a suitable length and diameter of that soft, flexible silicone hose you can get...

 

Cheers guys,

great information......now if only haynes did a pop up book called tinkering with your scooby for numpties then I might standa chance of fixing it :-)

I am going to check all the connectionsfir air leakswhilst I am there too and clean the MAF sensor too
ans

 

standard dv back on with airbox too.much smoother and civilised but just lacks that raw edge!oh and if they did do a pop up book from haynes i'd want a copy haha.