Intake Rubber Boot Raplacement - E39

Wassup People

So after an initial engine bay inspection a few days ago on my E39 528i, I discovered a nice big tear in one of the rubber intake boots.

Decided to get to it and post some pics

I always had this "whistle" like noise when accelerating, I was convinced it was a pulley, but after renewing them and the tensioners, I still had this "whistle"

BUT after renewing these intake boots, the whistle is completely gone

Maybe some of the experts can shed some light as to why this leak would cause a whistle like noise?

Here a the pics then :

You will see my "temporary" fix with isolation tape when I discovered it

OLD VS NEW

BMW Part no's 13541435625 & 13541437191 / 13541435627





Don't forget the "ring" that connects the pipes together

BMW Part no : 13541435626



Condition of the throttle body at 412 000 km's (untouched)



Condition of the MAF (untouched)





And finally, the culprit



Fuel consumption is now better than ever, car responds and shifts A LOT smoother, and it seems there were a few extra horses revived too!!

I would recommend checking these, as both of the boots cost me about R400 at the dealer

Sharing is caring, thanks for reading!!