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Back box recommendation

J

JimCosworth

Member
My E85 is nearly perfect except for the exhaust noise. Previous owner did a back box delete and is just too loud and I think it’s annoying my neighbours as well.

Can anyone recommend a back box that will be quiet at low revs but still give a bit of a growl at high revs? I do like the pops and burbling I currently have but suspect I probably can’t retain these.

- must be quiet at start up and low revs
- not too droney at motorway speeds
- nice to retain the burbling if possible

Any suggestions welcome!
 
They look good but maybe a bit out of my price range! There’s a company called Fastlane Styling based in Romford that do custom Z4 back boxes and if their advert on eBay is to be believed at a very reasonable price. Anyone got any experience of them?
 
Go old skool and saw it off! Ok, not helpful. Sorry (not sorry). Just being playful. Good luck with your search
 
My current Z4 came fitted with Powerflow back-boxes and I really like them. A bit more volume, some burbling but no drone on the Motorway. :D
 
I have one of the Gravity Performance systems on my 3.0 and I love it. Gives a nice roar on acceleration, little pops and burbles on overrun, no drone and not too antisocial (I'm too old for that now). For the price I think they're brilliant.
 
SqerrNipz said:
I have one of the Gravity Performance systems on my 3.0 and I love it. Gives a nice roar on acceleration, little pops and burbles on overrun, no drone and not too antisocial (I'm too old for that now). For the price I think they're brilliant.
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Cheers. I’ll check out their products 👍
 
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