As posted on FT.com

I want to get a DV for my FRST.

I'm unsure which one to go for as i've heard pro's and cons of both. I basically want to know which works best for my car!

I was looking at the standard baily dv24 (£88.99) and the forge fast road type, (£49.95 - forge also do competion ones which are more costly, whats the difference?)

I understand there wont be much difference but still I want to make a more informed decision.

I've noticed that forge also offer a piston type valve.

My big question really is what is better, diaphragm or piston? And after that, whats better forge or baily?

My car is standard apart from a mongoose exhaust.

PS I'm getting a DV because of the heatsoak my piperX suffers of. I still want turbo noises with the responsiveness of the standard airbox with uprated filter

TIA

Fil

 

my preference is a forge motorsport twin piston dump vale

u need a piston 1 dont even think of getting a diaphram one

 

I'm not aware of the differences between thr bailey and forge items, but the differences between piston and diaphram are the diaphram ones are more sensitive and open a lot quicker so in theory it should benefit in between gear changes (very very fractional), where as the piston ones are more suitable for higher boost.

Then the double piston items are intended for cars such as ESCORT RS's which have air dependent fuelling systems.

Yours being a Fiesta any will be suitable.

There is also i distinct sound difference between a diaphram and piston DV, which i won't even attempt to explain in writing

 

As much as I figured in regard to reaction times and strength of unit Cheers for the info! Im going to go for the forge diaphragm competition type with filter

 

P.S now we've cleared that up theres one other inportant thing to remember........

























Dump valves are gay