Does your R make this noise

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Does your R make this noise

Postby toplad » Thu Sep 07, 2017 11:20 am

I haven't had my car long and am not fully familiar with how it should sound, I want to check if a noise I can hear is normal

When Im fully on the throttle, climbing past 3k rev I hear like light fluttering sound, lke a wuffling until 4k revs then it dissappears. Second gear is over so quick it doesn't happen. I hear it in 3rd and 4th, haven't had the chance to check the other gears yet.
I had the car on the dyno today and it made 276Bhp with a Revo intake, it feels strong too
Anyone else getting this sort of noise?

I had it dyno'd to check the car was standard, but the guy said he couldn't tell if the car was mapped or not, I wanted some sort of check of the ECU file
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Re: Does your R make this noise

Postby Cuprabob » Thu Sep 07, 2017 12:08 pm

From your description it sounds like wastegate chatter amd is probably more pronounced due to the Revo intake.
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Re: Does your R make this noise

Postby 3t3p » Mon Sep 18, 2017 11:43 am

I hear it sometimes if I do a short blip in second gear and have only heard it since putting the forge twintake on my car.
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Re: Does your R make this noise

Postby Stuart-88 » Sun Oct 22, 2017 6:46 am

What you're hearing is compressor surge, very common on the KO4 - so nothing 'wrong' as such with yours. The stock compressor wheel struggles to keep up with the boost and will stall, which is what you can hear. You can buy anti-surge wheels from beach buggy turbo's, but not cheap, and only really beneficial if on big power
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