I've two questions:
1. Does 135i/335i n54 downpipes fit on Z4?
2. How's the smell & drone with downpipes installed and secondary cats in-place?
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Downpipes on 35is
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sachak
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Downpipes on 35is
I don't know if the 135i down pipes will fit the z4, i think there are a few differences however with regards to sound and drone. You won't get drone from down pipes. It will sound slightly different though....BUT it's in a good way! you will hear turbo noises which I personally love!
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Twin Turbo
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Downpipes on 35is
As far as I understand the answer is no
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stijohnny
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- Joined: Mon Apr 17, 2017 8:23 pm
Downpipes on 35is
No smell difference, you'll need specific 35i/s downpipes. Yes they do drone on the Motorway above 80mph in top gear, thats ok for a hour journey, not so good for a 5 hour journey. To avoid the drone, you'll need to stay 75-80 mph or else boot it through the lower gears and take your chances with the law...
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taranfx
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Downpipes on 35is
I dont really go above 80 often, so this should be all good. Thank you!stijohnny wrote: ↑Sun Jun 10, 2018 11:42 pm No smell difference, you'll need specific 35i/s downpipes. Yes they do drone on the Motorway above 80mph in top gear, thats ok for a hour journey, not so good for a 5 hour journey. To avoid the drone, you'll need to stay 75-80 mph or else boot it through the lower gears and take your chances with the law...