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Author Topic: Faulty N75?  (Read 6581 times)

Offline Wazzzer

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Faulty N75?
« on: 18 December 2009, 13:34 »
I've been having a few probs recently that were boost related on my Golf and I think I've found the culprit...

It's had a really loud intake noise on boost and I've been seeing 24psi on some runs which I hadn't been seeing when I just got the ECU back from the the remap

I'd also been hearing what I can only describe as a fluttering noise and then sometimes the turbo stalling and losing power

My first thought was the turbo was shot but I decided to do a bit more thinking as there were no other symptoms to back this up

Since changing the N75s over I don't get the really loud turbo wind up and I'm seeing about 16psi but I can't do much else due to roads being either too busy or old bill floating about and I don't fancy 3 points as an early Xmas present lol

Does this sound right to anyone else that's had one go wrong?

I'm leaving everything alone now until I get a chance to go up to R-Tech and get the boys to give it a thorough going over  :laugh:
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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 golf-sib

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Re: Faulty N75?
« Reply #1 on: 18 December 2009, 13:52 »
Could it be the DV, as my mate got alot of flutter with a DV that went, just a thought?

Didn't know AGU's had n75 valves, where are they?
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Offline DarkGti

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Re: Faulty N75?
« Reply #2 on: 18 December 2009, 14:15 »
Quote from: golf-sib on 18 December 2009, 13:52
Didn't know AGU's had n75 valves, where are they?

I no were basic but yes we have the N75 valve lol! its located on the turbo intake pipe!

i have also been getting strange boost readings as well wazzer, hitting 25psi in 2nd and 23psi in 3rd!
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Offline golf-sib

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Re: Faulty N75?
« Reply #3 on: 18 December 2009, 14:44 »
Quote from: DarkGti on 18 December 2009, 14:15
Quote from: golf-sib on 18 December 2009, 13:52
Didn't know AGU's had n75 valves, where are they?

I no were basic but yes we have the N75 valve lol! its located on the turbo intake pipe!

i have also been getting strange boost readings as well wazzer, hitting 25psi in 2nd and 23psi in 3rd!

Imagine it must be alot of fun, but can the k03 keep up with it as I though over boost damages and wears the turbo out?

Also any idea of what the internals can take boost/torque wise?
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Audi TT - K04 TFSI Hybrid - 325BHP
VW Golf - k03 AGU - 200BHP
1.8T AGU..
R135
╚╬╬╝
  24

My Chinese Bike project: http://xtrsproject.wordpress.com/

Offline Wazzzer

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Re: Faulty N75?
« Reply #4 on: 18 December 2009, 16:31 »
we both run the k03s  :wink:
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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 golf-sib

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Re: Faulty N75?
« Reply #5 on: 18 December 2009, 19:18 »
Quote from: Wazzzer on 18 December 2009, 16:31
we both run the k03s  :wink:

 :laugh: k03s

How much of a difference are the k03's as im debating between going ko3s or ko4-001 (direct bolt on, but havent found anyone with one to tell me if its any good)
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Audi TT - K04 TFSI Hybrid - 325BHP
VW Golf - k03 AGU - 200BHP
1.8T AGU..
R135
╚╬╬╝
  24

My Chinese Bike project: http://xtrsproject.wordpress.com/

Offline barry-gti

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Re: Faulty N75?
« Reply #6 on: 18 December 2009, 21:53 »
For the money spent getting the K04 to full potential i dont think you will be happy, I'd say K03s IMO.
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Offline Wazzzer

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Re: Faulty N75?
« Reply #7 on: 18 December 2009, 21:54 »
Quote from: barry-gti on 18 December 2009, 21:53
For the money spent getting the K04 to full potential i dont think you will be happy, I'd say K03s IMO.

agreed  :smiley:
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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 DarkGti

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Re: Faulty N75?
« Reply #8 on: 18 December 2009, 22:20 »
+1
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Offline Grand Master Patch

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Re: Faulty N75?
« Reply #9 on: 18 December 2009, 22:22 »
Not convinced on the fueling myself,more playtime Nick :wink: Do you read your pm's?
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