Akra slip on & downpipes +n55 midpipies - BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)

momo style · 04-06-2012, 07:51 PM

Does anyone has that set up.? I do have it and sine I installed the n55 mids, there is a raspy metallic noise. Does anyone experience it?

When I blimp the gas at slowspeed and in 2nd or 3rd gear,there is a rasp sound that last like 2seconds

Anythought?

cooler2442 · 04-06-2012, 07:58 PM

Raspyness usually comes from having a catless down pipe with not enough resonators in the rest of the exhaust. Try upgrading to a different mid pipe that has more resonators instead of the 1 big one on the N55.

04-06-2012, 07:51 PM	#1
momo style Private First Class Drives: 1m Join Date: Mar 2008 Posts: 188 iTrader: (0)	Akra slip on & downpipes +n55 midpipies Does anyone has that set up.? I do have it and sine I installed the n55 mids, there is a raspy metallic noise. Does anyone experience it? When I blimp the gas at slowspeed and in 2nd or 3rd gear,there is a rasp sound that last like 2seconds Anythought?
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04-06-2012, 07:58 PM	#2
cooler2442 Brigadier General Drives: '11 135 Sport DCT Join Date: Apr 2011 Location: The Valley, Los Angeles Posts: 3,174 iTrader: (5)	Raspyness usually comes from having a catless down pipe with not enough resonators in the rest of the exhaust. Try upgrading to a different mid pipe that has more resonators instead of the 1 big one on the N55. __________________

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