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Author Topic: High pitched noise on acceleration  (Read 17985 times)

Offline Tfsi_Mike

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Re: High pitched noise on acceleration
« Reply #15 on: August 30, 2011, 02:42:52 pm »
Quote from: baldwined30 on August 30, 2011, 02:37:34 pm
Any way of checking this??? How much is a KO4??

Pop up in the classifieds for around £600
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Offline baldwined30

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Re: High pitched noise on acceleration
« Reply #16 on: August 30, 2011, 02:44:53 pm »
How do I check first! I've done 40k and I don't do track days or any quater miles!

Also the ones in classifieds are prob like mine hahah
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Offline Tfsi_Mike

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Re: High pitched noise on acceleration
« Reply #17 on: August 30, 2011, 02:47:14 pm »

I think Jon tfsi is your man for turbos. Gleaming condition the ones I've seen listed so far
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Offline baldwined30

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Re: High pitched noise on acceleration
« Reply #18 on: August 30, 2011, 02:50:28 pm »
I don't want that though!! Any tell tail signs that, GULP, its giving up??
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Offline bacillus

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Re: High pitched noise on acceleration
« Reply #19 on: August 30, 2011, 04:41:38 pm »
Quote from: baldwined30 on August 30, 2011, 02:37:34 pm
Any way of checking this??? How much is a KO4??

heavyd priced up a new one for £1068 in this thread  http://www.mk5golfgti.co.uk/forum/index.php/topic,33542.msg416497.html#msg416497
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Offline johnboy07

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Re: High pitched noise on acceleration
« Reply #20 on: August 30, 2011, 07:39:49 pm »
For you guys experiencing this squeal and if you are modified and running a hpfp then i would strongly suggest changing the fuel valve for an rs4 one. i had exactly the same issue and this solved it for me. Was only about £40 from audi. An absolute pain in the arse to fit but its down to the car requesting higher fuel and the standard valve is unable to keep the flow rates up. Most peoples RR graphs show a bad fluctuation on the fuel pressure. Unlike mine now with a constant flow and no noise  :pomppomp: Hope this helps and will try find my graph to show you all  :happy2:
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Offline johnboy07

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Re: High pitched noise on acceleration
« Reply #21 on: August 30, 2011, 07:44:57 pm »
First up is jussa who was running stage 2+ just like me with the only difference being the RS4 valve and then mine :happy2:





The fuel pressure is the dotted line for those of you who didnt know
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Offline chris s

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Re: High pitched noise on acceleration
« Reply #22 on: August 30, 2011, 07:47:43 pm »
I noticed that my car is making a type of whistling / whining noise after I had a play around with the PCV [did not have the right torx attachement to undo the last screw], I also was attempting to swap the Type D DV back to the original Type G seeming as my Ed30 isn't putting out the power a Revo stage 1 should be, but again I didn't have the right size Torx fitting [I'd managed to use a 25 instead of a 30 when I fit it... but it's slipping a bit when trying to undo it now]
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Offline baldwined30

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Re: High pitched noise on acceleration
« Reply #23 on: August 30, 2011, 09:09:54 pm »
think i will try an rs4 valve before i try the turbo then!!!!
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Offline Russ_leeds

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Re: High pitched noise on acceleration
« Reply #24 on: August 30, 2011, 11:22:15 pm »
im guesing that its not the high pitched 'flute' sound of the intake?
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Offline Weston

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Re: High pitched noise on acceleration
« Reply #25 on: August 30, 2011, 11:32:25 pm »
Quote from: Russ_leeds on August 30, 2011, 11:22:15 pm
im guesing that its not the high pitched 'flute' sound of the intake?

Not heard of this. Could a twintake make this noise? When I got mine remapped the noise I had was louder with the intake off
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Offline bacillus

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Re: High pitched noise on acceleration
« Reply #26 on: August 30, 2011, 11:40:17 pm »
Quote from: johnboy07 on August 30, 2011, 07:44:57 pm
The fuel pressure is the dotted line for those of you who didnt know

No it's not, that's the AFR (air fuel ratio)...   :confused:
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Offline cmdrfire

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Re: High pitched noise on acceleration
« Reply #27 on: August 31, 2011, 12:08:27 am »
Fair amount of random stuff in this thread.

Quote from: Russ_leeds on August 30, 2011, 11:22:15 pm
im guesing that its not the high pitched 'flute' sound of the intake?

x2 I guess the whistle (or "hoot" in some instances) may just be induction noise around the 3k-4k mark. Happens on occasion.
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Offline johnboy07

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Re: High pitched noise on acceleration
« Reply #28 on: August 31, 2011, 07:22:16 am »
oh ok my mistake but the guy at JKM said that the dotted line was effected by the fuel pressure and that the rs4 valve was the reason mine was more settled and didnt fluctuate as much
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Offline baldwined30

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Re: High pitched noise on acceleration
« Reply #29 on: August 31, 2011, 08:46:57 am »
Na defo not the intake as is was doing it before I had it fitted, its just a little louder now as the engine cover is off! Prob look into getting this RS4 valve but the fitting seems to be a real problem!!
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