ARL Boostleak whistle

[Napalm]

Hello all,

I have recently bought a 2003 ARL pd150 mk4 golf, its got 200,000 miles on it and an issue i cannot seem to diagnose is a a turbo whistle/ boost leak, i've had it on ramps revving tf out of her feeling for the leak, and listening however i cant feel anything, and its not really loud without road resistance. Any help would be much appreciated. Hope ive done this right, new to Mk4's and the forum

[Mr_Orange]

Any loss of power or just noise under load?

[Napalm]

I dont know, i bought the car with the issue, however its top speed is only 121mph, factory its 137mph,
Update: ive had a smoke test done, reault was inconclusive, no smoke leaked out. Really stumped here guys

[Napalm]

And yes only under load does it whistle, not on ramps

[barrym381]

I dont know, i bought the car with the issue, however its top speed is only 121mph, factory its 137mph,
Update: ive had a smoke test done, reault was inconclusive, no smoke leaked out. Really stumped here guys

137mph are you dreaming  :grin and any idiot doing that in an old mk4 deserves a slap

[Napalm]

I dont know, i bought the car with the issue, however its top speed is only 121mph, factory its 137mph,
Update: ive had a smoke test done, reault was inconclusive, no smoke leaked out. Really stumped here guys

137mph are you dreaming  :grin and any idiot doing that in an old mk4 deserves a slap

Cheers for that mate, looking for advice on to stop the whistle when the turbo kicks in lol