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      04-25-2012, 05:39 PM   #3
hp jnkey
First Lieutenant
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Drives: 2008 535i M-Tech
Join Date: Mar 2011
Location: San Diego

iTrader: (3)

I just installed a performance muffler on my 535. It's a dual/quad set up.
The guy used a Camaro muffler which has an outlet on each end and he bent a pipe around to the passengers side.
The thing is loud and drones like a bitch but I also noticed that the throttle response has changed. It seems to take longer to get that surge of power from the extra boost. The power would come on with very little throttle and now you have to lean into the gas alot more.
Also seems like the car is harder on gas.
It just feels different. I liked it better before and I will probably change back to the stock exhaust.
I ordered this thing called a CC Insert. It's a baffle that slips into the exhaust pipe just before the muffler. It's supposed to reduce the drone and probably the flow as well. Might be a good thing.
Appreciate 0