i recently changed my turbo to a recon unit on my audi, oil feed pipe was changed, egr cleaned out, map and maf sensor changed the car still has a small whistle sound, i get black smoke when i put my foot down and also i feel the turbo doesnt kick in early enough compared to my previous a4 1.9 tdi. any suggestion? The same mechanic who changed turbo advised to check intercooler for leak, thats about it really. I have already spent so much money on the car, cant afford to throw in much more only not to get the problem sorted. any help/ suggestion will be appriciated.
thanks
