dark3drcos.kickass

it's time it came down to a vote lads. yes or no

Filthy Rich

Not for me,my spec dosesn't need 1 so it ain't got 1

Hectori

i say yes, if you need one. othervise its all same to me.

Alps Pacino

the problem is WHO determines if 1 is needed or not. Tuners tend to contredict each other and i doudt there is a rule that if your engine has this, this and this it dont need 1.

steviep

Not for me

Filthy Rich

Mine was live mapped without one,i've had this conversation with my 'tuner' many times and have to admit it is much more responsive without a d/v . So far i've had no relieabilty problems (3 years without it) fingers crossed

STUCOS

iTrader: (8)

depends on your engine spec,but if running a turbo bigger than a t34 or 28 + psi of boost the answer is yes

cheeRS stu

Simmo

iTrader: (20)

i haven't got a dump valve on my stage 3 saph cos i love the chatter and am only running 20psi. Although when i had the dump valve on i did notice a reduction in spool-up time between gears... the fresh cooler air must make a difference!!!... so i'm saying YES

xr4i

Chatter is the way! reminds me off the group b rally x cars

mattbibs

cossie chatter is awesome! but there is a point where most tuners will agree that one is needed!

i say no tho as most wont have a spec as big!

Cos500

If your 18 then yes if your all grown up id say no, less is more.

The Gravedigger

If you can afford to insure a Cossie aged 18 then you're probably able to afford a Cossie with a DV, and one without

dark3drcos.kickass

the gravedigger just kind of gave my opinion away with his sig din't you think

Mrs T

im not a lad but have voted

they can stay

MacFly

yes for me, the woooooosh is very exciting !

dark3drcos.kickass

Cos500

Who said anything about cossies, you dont need a cossie to have a dump valve, i had a mk1 astra gte with a turbo conversion when i was 18 with a dump valve, now im 29 i have an RS500 and no dump valve. dump valves sound shite, only my opinion mind.

mattbibs

agree with cos500. i think everyone follws the same pattern. i had a DV on the frst when i first got it at 19, loved it! then realised the chatter you get with efi!!

theres no going back to vrooom ptsssch for me!

noodlesblacksaff

chatter for me to tink dv sound s*!t

the strut brace

d.v. defo impair the performance, you can defo feel the car pull quicker after a gearchange when you take valve off, turbo takes longer to spin up when d.v. fitted (obviously), i prefer not to dump