Ford Fiesta 1.4 TDCi Zetec Climate (05 plate) - Fiesta 1.4 TDCi (05 plate) engine whooshing noise - MYFIESTA

My Fiesta 1.4 TDCi (05 plate) 58,000 miles covered is making a whooshing noise when accelerating from about 1700rpm. This has only started since all four injector seals were replaced and I noticed this noise as soon as I drove home. The garage have checked all hoses are tight but the noise is still there and I think there is a slight loss of acceleration.

Any ideas anyone?

Thanks

Ford Fiesta 1.4 TDCi Zetec Climate (05 plate) - Fiesta 1.4 TDCi (05 plate) engine whooshing noise - injection doc

must be an air leak, i would suggest they carry out a test with a leak Detector, iether an ultrasonic one or smoke generator. these find the smallest of leaks in seconds.