Page 1 of 2
Missing 3-4 psi - N75 valve ??
Posted: Mon Apr 21, 2008 6:41 pm
by AdamS4
Noticed on the Vag Com logs yesterday on the way to the RR and from today's logs, that i'm down on boost by about 3-4 psi from the standard boost.
Could my N75 valve be knackered ?
Might explain why i'm down on power a little.....
BTW, this is my RR graph from yesterday:
RE: Missing 3-4 psi - N75 valve ??
Posted: Mon Apr 21, 2008 6:49 pm
by Blue_Thunder
Has it been pressure tested recently?
RE: Missing 3-4 psi - N75 valve ??
Posted: Mon Apr 21, 2008 6:59 pm
by AdamS4
Actually, not for a few weeks... I'll do that tomorrow.
RE: Missing 3-4 psi - N75 valve ??
Posted: Mon Apr 21, 2008 8:17 pm
by GrahamS4
Not for a few weeks!!? I can just see you at the petrol station, right full tank, lets have a quick pressure test!
RE: Missing 3-4 psi - N75 valve ??
Posted: Mon Apr 21, 2008 8:24 pm
by Virdee Autos
I've yet to do mine, for even the first time, and here's someone who does it weekly....only joking
RE: Missing 3-4 psi - N75 valve ??
Posted: Tue Apr 22, 2008 11:14 am
by GHH
interesting to see a printout from another dastek r/r for a stock engine, had mine done on one in march, the plots are pretty much the same on yours as mine, with the high and low points on the graph in the same places.
http://i49.photobucket.com/albums/f261/ ... age1rr.jpg
would make sense if it was something to do with the n75 i would have thought. would the timing effect boost reading at all?
RE: Missing 3-4 psi - N75 valve ??
Posted: Tue Apr 22, 2008 11:41 am
by AdamS4
GHH, was yours standard when that RR was done ??
My torque is quite low compares to yours.
RE: Missing 3-4 psi - N75 valve ??
Posted: Tue Apr 22, 2008 12:58 pm
by AdamS4
Just done a pressure test.... all ok from what i can see/hear.
Time to order a new N75 valve ??
RE: Missing 3-4 psi - N75 valve ??
Posted: Tue Apr 22, 2008 2:15 pm
by Blue_Thunder
Why not, it's not a lot of money for piece of mind, even if it doesn't fix the issue.
RE: Missing 3-4 psi - N75 valve ??
Posted: Tue Apr 22, 2008 3:38 pm
by AdamS4
Cheers, ordered one
Re: RE: Missing 3-4 psi - N75 valve ??
Posted: Tue Apr 22, 2008 11:56 pm
by GHH
AdamS4 wrote:GHH, was yours standard when that RR was done ??
My torque is quite low compares to yours.
its standard bar 710N's, fully decatted stock system, RS2 plugs and some holes in my airbox
off topic but i fitted an awe vent guage today, looks well smart and never had boost guage before
what boost should a standard car make anyway?
George
RE: Re: RE: Missing 3-4 psi - N75 valve ??
Posted: Wed Apr 23, 2008 8:36 am
by AdamS4
11 psi..... i think
RE: Re: RE: Missing 3-4 psi - N75 valve ??
Posted: Wed Apr 23, 2008 11:33 am
by GHH
oh mines reading about 10 psi max....i've lost one too! altho think it was fine on
Vag Com so wont worry too much.
hope the N75 valve sorts it mate.
RE: Re: RE: Missing 3-4 psi - N75 valve ??
Posted: Wed Apr 23, 2008 11:54 am
by Ads4
The N75 valve was holding mine back too when Doug remapped it after the manifolds. The missing psi returned with the new valve
RE: Re: RE: Missing 3-4 psi - N75 valve ??
Posted: Wed Apr 23, 2008 12:20 pm
by S4
Turn the screw..... if you dare .............................................................................................
Darren
