What effect will changing the spring in my 007P from standard to green have? How much psi can I run on the standard N75 valve? I will change it but want to see how far up I can go safely before injecting **** loads of cash! I think I'm running aroiund 12-14 at the mo (according to the gauge). Any advice will be greatfuly received!

Isn't 12-14 PSi a bit low for the VRS?

According to the liquid gauge I'm running around 19psi on my standard N75.

BUT

I think it's knackered now. I'll only be replacing it with another standard one though if it is bust.

What effect will changing the spring in my 007P from standard to green have? How much psi can I run on the standard N75 valve? I will change it but want to see how far up I can go safely before injecting **** loads of cash! I think I'm running aroiund 12-14 at the mo (according to the gauge). Any advice will be greatfuly received!

Standard boost or mapped ???

Typically the standard spring in a VAG 007P DV is green. If not you should put a green one in it. If you are only running 12-14 PSI then it should be green. The next one up is yellow from that should be used in VRS's running 15 - 23 PSI. This is typically on remapped cars. This is the colour guide

Valve Spring color coding:

Green - 5-15 PSI

Yellow - 15-23 PSI

Blue - 23-30 PSI

Red - 30 + PSI

I haven't yet opened it to check but the car is mapped (revo) and only going off the gauge readings its more like 10-12 psi, 14 was a bit of an exaggeration it would seem after rechecking today!

Revo should run about 17-19 psi I think, standard map is about 10 psi. Have you disconnected the battery at any time as I here this can turn the Revo map off. If thats the case you may need an sps or select switch or take it to a Revo dealer to sort it. Of course it could also be a boost leak. N75 should be up to the extra boost plenty of mapped cars on here with standard N75's and no probs uprated versions just hold the boost for longer before opening the wastegate.

Anyway of telling if it has a revo map on it then? I have VAG-Com and lead, will that show anything up? So, is it safe to bring the actuator in a few turns then?

You could run block 115 and check the boost?

i.e Gauge not accurate? It goes well enough but then Ive not driven any other than this so nothing to compare it too.

Anyway of telling if it has a revo map on it then? I have VAG-Com and lead, will that show anything up? So, is it safe to bring the actuator in a few turns then?

I don't think you should touch the actuator tbh.

Where are you based? I have an SPS 2 Switch. It's takes less than a minute to turn it to whatever setting you want. Don't know what would happen if I plugged it in and turned it up if you don't have Revo mind. I'm guessing nothing but someone on here should be able to clarify. Give us a shout if I can help.

Im in South Wales mate. What is an SPS unit? Sorry, Im new to the modern turbo - I cut my teeth tuning my 2wd Cossie back in 98 and everything has changed now!

Im in South Wales mate.

Roughly where mate, I may be able too give you some help

Near Newport - You?

Cardiff mate. You can PM me if you want and maybe we could meet half way and I can have a look with vagcom for you.

Yeah you're a bit closer than me Fatty!!

Checked and I am indeed running a green spring in the DV but seeing as it's only running LOW boost that's fine but will order a yellow in readyness - 15-18psi is a must surely! The acceleration isn't as aggresive as I'd like and 10psi would explain why!

Im in South Wales mate. What is an SPS unit? Sorry, Im new to the modern turbo - I cut my teeth tuning my 2wd Cossie back in 98 and everything has changed now!

Info on Revo SPS http://www.revotechnik.com/products/pdf/sps.pdf

if you have Revo software it's worth having. I got an SPS 2 of Ebay for much less than a new unit

Had a Vag-com scan done with Mr.Fatty and it's thrown up a N249 valve failure. If the car IS mapped would this have an effect on the boost? As I said, it's running 10-11psi but should be 15-17 if mapped surely?

Lee

I've had a little search and this does seem directly related too boost levels although not in the way we guessed.....lol

I see it could also be DV related, I got a spare standard DV we could try if need be.

So can anyone tell us how reliable this code is......... 17608 - Boost Pressure Control Valve (N249): Mechanical Malfunction

P1200 - 35-10 - - - Intermittent

As in if Lee replaces the N249 valve will this cure the problem or could this fault be caused by something else eg a split hose or the wind blowing in the wrong direction lol

Edit anyone confirm the part number 078 906 283 A for the N249...........................Edit again ........This is the correct part number.

Edited 11 February, 200917 yr by fatty5000

Boing ...................

Anyone got any ideas for us.