Dump valve Question

[cus]

does it hold at 18?

hits 18, tails off to around 12psi at higher rpm.

got a couple of problems at the moment, think my d/v is sticking as well, as i have the same problem as you

if i have my foot on the accelerator just slowly hitting boost, i see the needle jumping up and down a bit. if i have my foot fully down i dont have the problem though

 

[krisbutler02]

think mines a k03

 

[krisbutler02]

cus ,sounds exactly like mine

 

[krisbutler02]

think i may have one of these on it though not 100% as its dark and i need 2 get underneath the car 2 see properly

http://www.forgemotorsport.co.uk/content.asp?inc=product&cat=190101&product=FMACVAG03S

 

[Reuvers]

btw, a K03s can be silenced or un silenced. So if it doesn't have the big lump on top, it doesn't mean its not a k03s.

 

[krisbutler02]

still does the same with the 007p fitted ive tried both springs green and yellow

yellow feels beter but still drops to 12 psi!

any more ideas?

 

[Pidge]

Just out of interest how quickly does it drop back to 12psi after its spiked? If its more or less instant it could be that big black reservoir on top of the rocker cover pissing it all out due to a boost deviation? I *think* thats the n249 doing what its meant to

Id be checking all vac lines and getting rid of all the unneccessary crap under there first bud (n249 bypass at least and possibly the n112 aswell but youll need some resistors to do the full job)

My car spikes to ~20-22 psi which it holds for just over 1000rpm then tails right off to 10psi by 6k and slightly under that at 7k. Mines meant to run 200-210bhp (previous owners quotes) but im pretty certain its well under that. Maybe 190-195 at a push, im happy though as its running really well for the first time since i got it!

Just the limitations of a standard exhaust, smic and TIP

 

[krisbutler02]

just spoke 2 jabba sport and says its fine for rhe power and ive prob lost a few psi because of fmic

 

[krisbutler02]

found out i haver a sports cat n downpipe

 

[krisbutler02]

connected boost guage into manifold take off and now boosts 19 psi peak then down to 13 and holds

 

[M87NER]

Are you sure its 223bhp? is it proved from previous owner? as thats fair high for a standard k03 turbo... what other mods have you got? what map has it? 19 psi sounds right and if it peaks 19psi and holds it to around 4.5 5k then tails off to 13 psi thats normal for a k03 turbo

 

[krisbutler02]

yeah 223 @ the flywheel i have a printout

mods
k03 standerd turbo (i think)
green dynatwist filter
sports cat & downpipe
full supersprint exhaust
jabba sport stage 2 custom remap
front mount intercooler
just done n249 mod
forge 007p dv
silicone vac hoses


and no it peaks at 19 psi then about 2 seconds later it drops to 12-13 psi even with the n249 mod

 

[krisbutler02]

what controlls the boost ? could it need replacing

 

[Reuvers]

yeah 223 @ the flywheel i have a printout

mods
k03 standerd turbo (i think)
green dynatwist filter
sports cat & downpipe
full supersprint exhaust
jabba sport stage 2 custom remap
front mount intercooler
just done n249 mod
forge 007p dv
silicone vac hoses


and no it peaks at 19 psi then about 2 seconds later it drops to 12-13 psi even with the n249 mod

that sounds about right with those modds...its the all famous lottery!

 

[krisbutler02]

but should the boost frop off so quickly from 19-12-13 ish?

as lots of people say that theres holds @ higher boost !!

could it be the n75?

 

[krisbutler02]

the n249 mod definatly makes off boost driving easier

and the new 007p is now louder aswell sounds more snappy

 

[christian rea]

the n249 mod definatly makes off boost driving easier

and the new 007p is now louder aswell sounds more snappy

the fordge dv is probs o think the loudest dv out there myne turns heads all the time lol can clearly hear it inside the car

 

[krisbutler02]

the dv30 was louder but not as crisp sound if u get me lol

 

[christian rea]

the dv30 was louder but not as crisp sound if u get me lol

yeah mines loud psssssssssssssst with a woosh noise

 

[krisbutler02]

yeah did u look at ur turbo?