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Hi Guys,

I tested a 17 plate GTR today and when pushed post approx 5k RPM it makes a noise similar to a whistle, it feels like it's coming from the back of the car. It was a dealership vehicle and I asked them about it they said their engineer will have to check it.

Has anyone experienced anything similar?

Thanks,

MOD GTR
 

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My 64 Reg makes a quiet whistle on acceleration. It may be a small vacuum leak from a plenum spacer fitted in September. Idle is also very slightly off at times i.e. between 800 and 1000. I did switch it to an Ecutek 700ps map and there is a bit more fuel too. But it still goes like the ballistic clappers. I will get it checked when serviced in March.
 
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