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Model specific boards => Golf mk4 => Topic started by: dellenty69 on 28 November 2010, 23:27

Title: good old 17963 upper boost pressure exceeded.
Post by: dellenty69 on 28 November 2010, 23:27

been working on the car lately, replaced all breather pipes as they where all shot, along with the pvc. i also done the n249 mod, whilst doing this i managed to snap the nipple of the bottom of the inlet.

so i replaced the inlet, cleaned the TB, and completed the N249 bypass mod. car now holds boost properly and ticks over nice and smooth, i also took the atmospheric DV off and put a forge recirculating valve on (fully recirculating, blanked off the trumpet)

now when i come on boost i peak around 19-20psi (iv always peaked around this) but after doing all these things i peak once, and then i can only hit 8psi and its really restrictive in power.

my vag com shows up the pressure drop between dv, (always had this) and the 17963 code.

as soon as i clear the code it will boost again. pain

the n75H isnt all that old, id say jan/feb it was replaced, my MAF was replaced with a genuine bosh one around 5months ago, when i changed the inlet i did clean the AIT sensor. but it was alot more grubby than my old one, is it possible that a fault AIT sensor would throw up this code?

my vag com is only the ebay jobby so i dont think i can log a run can i? and i cant reset my TB either but on tick over my TB is open 0.4degrees which seems a sensible percentage.

2000 AUM 1.8T

every bit of help is appreciated.
james

Title: Re: good old 17963 upper boost pressure exceeded.
Post by: tech1889 on 28 November 2010, 23:38

Get a 007p valve on there to rule that out and go from there

Title: Re: good old 17963 upper boost pressure exceeded.
Post by: dellenty69 on 29 November 2010, 11:11

even with the standard valve i still get the pressure drop anyway, but i will give it a go.

Title: Re: good old 17963 upper boost pressure exceeded.
Post by: tech1889 on 29 November 2010, 11:24

You should ave n75j aswell I believe.. Call Rtech and explain your situation to pip see if he can help

Title: Re: good old 17963 upper boost pressure exceeded.
Post by: dellenty69 on 30 November 2010, 00:10

SORTED
i took the AIT sensor of my old inlet manifold and put it on my car, problem gone! boosts lovely now, going to get a brand new one from VW providing the price is right.

i have spoke to him before regarding the n75, he says the H isnt compatible with the stage 1 remap, but it works just fine. i will change it but have more important things to do at the moment.

cheers for your help mate.

Title: Re: good old 17963 upper boost pressure exceeded.
Post by: Wazzzer on 30 November 2010, 06:32

The N75 will also be part of your problem

Title: Re: good old 17963 upper boost pressure exceeded.
Post by: dellenty69 on 30 November 2010, 11:24

yeah i imagine it is, but that's an expense that can wait till after Christmas lol

Title: Re: good old 17963 upper boost pressure exceeded.
Post by: tech1889 on 30 November 2010, 17:22

Atleast its running better now bud..