Boost Problem!!! - limp mode?

[L31GH C]

Right... where to start?... just brought a Ibiza Cupra R on 04/01/09 got a few mods done, suposidly 250bhp? here's the engine mods done: (taken from advert not actually sure whats been done)

KO3s turbo (standard on Cupra R)
Fordge FMIC
Fordge Tip
JABBA Sport Airfilter & Alloy Cover
3" Jamex Turbo back Exhaust
Jamex Manifold
Custom Code Stage 2 Re-map
N75 Valve
Bypass
Other Samco/SFS Piping

Also got Boost gauge in-car (reading 20 something psi)

right... what is is in high gear @ low revs, if you decided to put your foot down, it boost to way over 20psi then goes into limp mode! (have to disconnect battery to get out of limp mode) does anyone have any idea what it could be???

been told it could be 1 of the following -

coldness? (weather)
N75 Valve Faulty?
Needs Mapping Again?
Split Pipe?

i have checked all pipes & tightened jubilees, they seen fine. but still might be them???
& have had a fault finder plugged in & came up with 1 code took that off then was ok. Also not showing engine light when this happens! could it be the bulbs gone or been taken out???

Anyone HELP??? Or would like to have alook?

Cheers Leigh

 

[Reuvers]

ok to start with your car and the add...


the add lied...sorry to tell you.

Many people on here are wrong about this, but I'll say it again as others have too (so all you listen):

The cupra R does NOT have a k03s. It has the regular 156hp k03. It merely has a different ECU giving it that 24HP more than the regular cupra!

So your car will probably be seeing 220HP, no more!

As for your problem all we can do is guess as we need the actual code.

But I can tell you that whoever told you that it might be the cold or you need to get your car mapped again...don't listen to him again.

Its not that.

would be guessing (note word guessing as we'll need the code) that its either a boost problem (so split hose, popped off pipe, or N75 valve although i doubt that last one), or you have a coilpack which is on the way out.

get it on vagcom.
Disconnecting battery won't solve much as many codes are stored until properly deleted, which cannot be done with battery disconnecting

 

[acidstrato]

wooooooooo reuvers has the misinformation under control
*flame off*

i'm in a flaming type of mood tonight and i'm lookin for victims

 

[Damoegan]

Like Reuvers said, it has a k03 and not k03s turbo (unless it has been changed). You still wonte get 250bhp out of a k03s.

You realy need to get it vag-com'ed otherwise we are just guessing realy mate.

 

[L31GH C]

it's defently got a bigger turbo on as my old 1 sounds & pulls nothing like this 1 does.

the place were i had a fault finder said the code is linked to the N75 valve, so i'll try changing that 1st, & then take it to be put on a vagcom. i doubt it's a pipe as it's ok when been reset, if it was pipe it would be conctant.

also i will get code again & post that up too. when can i go to have it put on a vagcom???

cheers for the help mate

 

[Damoegan]

I had a similare problem when me dv stuck in the closed position. Boost shot up as it could not dump it. luckely I knew it was faulty and was watching the boost gauge and lifted iff the throttle before it went to high.

It dont say what dv you have. It might of failed/be failing.

Realy need it vag-com'ed mate.

 

[acidstrato]

'maximum boost pressure exceeded' ring any bells?

 

[Damoegan]

We realy need the code that is causing that though.

I had:
1 Fault Found:
17608 - Boost Pressure Control Valve (N249): Mechanical Malfunction
P1200 - 35-10 - - - Intermittent

 

[L31GH C]

it's got a forge re-circ mate think it's the fmcl007p. could thins be nackered?

also thats sounds more like it 'maximum boost pressure exceeded' whats that mean then?

 

[L31GH C]

thats the code mate p1200 new it was something 1200. whats that mean then???

 

[acidstrato]

means your n75 is either wrong or fecked

standard varients were C or F

1200 is not the fault code i'm afraid, in the above example 17608 is the specific fault code

 

[L31GH C]

yeah they said that it might be fooked. cool i'll get 1 of them then & try that. is taht all it could be?

 

[Damoegan]

Max boost pressure exceeded will prob only be one fault code prob. There will prob be another code causing the max boost code.

Remove your dv and split it and check it inside. you can alway email forge and get a service kit FOC.

 

[acidstrato]

by your description, i'd say thats what it is.

since you listed N75 in your modification list then the likelyhood is someone fitted a non standard N75 causing too much spike and the ecu shits a brick

just a theory though

 

[L31GH C]

ok nice 1 i'll get that changed as soon as i can get hold of 1, also i'll take the dv apart & check that too, then get back to you all

cheers

 

[wilz]

i have a similar problem mate, and the maximum boost pressure exceeded fault along with others.

Did my maf, n75, n249 and n112 bypass, my pipes were on the wrong ports of the actuator. Some had fitted a powerboost valve so that was taken off. All pipes checked and vac lines replaced. Disconnected the battery to reset the ecu,

Went for another run and now I’m backfiring like hell, Precat lambda needed, also noticed i need new sparkplugs and will give it a good service soon.

So really it is a guessing game without vagcom and even then it doesn’t show all.

 

[L31GH C]

bloody hell, im hopin this is just the n75 valve. Will find out soon, going to put it on vagcom asap but also gunna service aswell.. cheers for the help

 

[Reuvers]

Do not go and buy a new N75 valve just like that!

First check if it was fitted correctly, and get it on vagcom.

Don;t go throwing your money at something you 'think' might solve it.

as for you saying that it has a "bigger turbo fitted" because of the sound....???

Not sure about this. The k03s is just as big as the k03 btw.
If you're running stage 2 it will nmake more sound as boost is higher. maybe its got a tip and your last one didn't meaning you'll hear it spool a lot more.

If you want to know if its K03s then either take TIP off the side, and count the blades. 8 is k03s, 12 blades is regular k03.

 

[L31GH C]

ok nice 1, yeah had forge tips on both, red on my 1st 1, blue on this 1, i no someone who's got a new N75 spare he said i can try that then go from there

who or where is best to go by me with a vagcom??? MIDLAND VW???

 

[Damoegan]

who or where is best to go by me with a vagcom??? MIDLAND VW???

Put up a 'help wanted' request in the vag-com section. I'm sure there will be someone close to you that has vag-com and can help you out.