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Author Topic: when to replace n75 valve and which letter?  (Read 3128 times)

Offline davemk4

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Re: when to replace n75 valve and which letter?
« Reply #10 on: 25 March 2013, 19:22 »
So any change in the E over F? Worth replacing as it 10 year old
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2001 mk4 GTI 1.8t AUM. k&n induction kit with customer heat shield, 3'' TIP, Forge 007P, Stage 1 map, N249 bypass, 3'' downpipe and decat, 2.75'' Jetex cat back non res, Koni shockers and H&R springs 35mm, dimpled and grooved disks front and back

Offline Dalo Harkin

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Re: when to replace n75 valve and which letter?
« Reply #11 on: 25 March 2013, 19:42 »
No one has answered in terms of how you know if it needs replacing, I would like to know this too obviously providing no fault code etc how long should they last for and are there any benefits replacing to a newer version
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ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline davemk4

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Re: when to replace n75 valve and which letter?
« Reply #12 on: 25 March 2013, 19:58 »
This is it. I know J valve has very mixed views
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2001 mk4 GTI 1.8t AUM. k&n induction kit with customer heat shield, 3'' TIP, Forge 007P, Stage 1 map, N249 bypass, 3'' downpipe and decat, 2.75'' Jetex cat back non res, Koni shockers and H&R springs 35mm, dimpled and grooved disks front and back

Offline novadragon007

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Re: when to replace n75 valve and which letter?
« Reply #13 on: 25 March 2013, 20:05 »
Quote from: Dalo Harkin on 25 March 2013, 19:42
No one has answered in terms of how you know if it needs replacing, I would like to know this too obviously providing no fault code etc how long should they last for and are there any benefits replacing to a newer version

i think its logging in vag com group 118 to check if its faulty something to with the cycle percentage but im not exactly sure on what to look for in it lol
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Mk4 GTi 1.8t 16" BBS Alloys, Coilovers, Full Exhaust, Catch can..... More to come - If i ever beat this 17705

Offline 1.8t-net

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Re: when to replace n75 valve and which letter?
« Reply #14 on: 25 March 2013, 20:58 »
Does anybody know how I can test this before shelling out on a new one?
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Offline davemk4

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Re: when to replace n75 valve and which letter?
« Reply #15 on: 26 March 2013, 16:36 »
Looks like no one knows lol :-(
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2001 mk4 GTI 1.8t AUM. k&n induction kit with customer heat shield, 3'' TIP, Forge 007P, Stage 1 map, N249 bypass, 3'' downpipe and decat, 2.75'' Jetex cat back non res, Koni shockers and H&R springs 35mm, dimpled and grooved disks front and back

Offline Dalo Harkin

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Re: when to replace n75 valve and which letter?
« Reply #16 on: 26 March 2013, 20:30 »
 :sad:

Gutted too... wanted to see if mine was up to the job, don't think it's ever been changed
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ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)

Offline jimmyGIT

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Re: when to replace n75 valve and which letter?
« Reply #17 on: 27 March 2013, 08:19 »
Read sumthing about blowing into the tip side to see if any air passes through if so its fecked!It operates like a one way check valve but electronically, so this kind of makes sense!! :undecided:
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Offline Wazzzer

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Re: when to replace n75 valve and which letter?
« Reply #18 on: 27 March 2013, 08:43 »
Yes one pipe should be blocked and the other two you should be able to blow through
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1999 1.8T: R-Tech remap - 225bhp/256lb/ft : K03s : THS FMIC : THS PCR pipe : 2.5" stainless exhaust : THS FR3 Engine mounts : G60/VR6 clutch : Calibra Yellow injectors : VR6 MAF : Devils Own WMI : Forge 007p : Carbonio CAI : Leon Cupra R Brembos : FK AK Street coilovers : Votex skirts : Anniversary front : click ---> http://www.golfgtiforum.co.uk/index.php?topic=92175

Offline Dalo Harkin

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Re: when to replace n75 valve and which letter?
« Reply #19 on: 27 March 2013, 09:06 »
to put it another way then, what would be the characteristics of a faulty N75  :evil:
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ARZ K03s, Oettinger Side Skirts, R32 front, Carbon stage 2, Forge 007p (yellow spring), Forge Actuator (yellow spring), Pipercross panel filter with DSG parts, N249 and N112 deleted, SAI deleted, Carbon canister deleted, Rear wiper deleted, Long Life turbo back custom exhaust with 200 cell sports cat, VR6/G60 clutch kit, Creation Motorsport TIP, Catch can, 'Wellycooler', K04 charge pipe, S3 ported inlet manifold - looks pretty standard on the outside though :)
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