my flaps..... - BMW Forum - BimmerWerkz.com
3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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#1 (permalink) Old 05-10-2003, 06:33 AM
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Cool

i have a 95 328i (euro spec) and in the rear twin pipes is a flap, which works from an actuator........ what does it do, whats it for?

.....any idears.....
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#2 (permalink) Old 05-10-2003, 07:55 AM
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what what? The flap is where? inside the pipe or huh i dont understand... get a picture

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#3 (permalink) Old 05-10-2003, 08:09 AM
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when you look up the two pipes from the rear of the car, there is a flap on the right hand pipe about 2 inches inside, and when you rev the car it opens and closes......
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#4 (permalink) Old 05-10-2003, 08:17 AM
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hrmm ive never heard of this on any street cars. Its usually used for getting torque on lowend and then still making the high end power when it opens up. Also it deadens sound a little. cool stuff at least if it is what im thinking of

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#5 (permalink) Old 05-10-2003, 08:20 AM
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Quote:
Originally posted by Fox@May 10 2003, 06:17 AM
hrmm ive never heard of this on any street cars. Its usually used for getting torque on lowend and then still making the high end power when it opens up. Also it deadens sound a little. cool stuff at least if it is what im thinking of
i dont know what its for, but what fox said makes perfect sense
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#6 (permalink) Old 05-10-2003, 08:23 AM
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Originally posted by Fox@May 10 2003, 01:17 PM
hrmm ive never heard of this on any street cars. Its usually used for getting torque on lowend and then still making the high end power when it opens up. Also it deadens sound a little. cool stuff at least if it is what im thinking of
i would probably go with your theary....
its definalty a stock exhaust, but then my car is a euro spec......
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#7 (permalink) Old 05-10-2003, 08:48 AM
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water/condisation in the exhuast precaution?

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#8 (permalink) Old 05-10-2003, 08:53 AM
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Originally posted by e30_325_s52@May 10 2003, 01:48 PM
water/condisation in the exhuast precaution?
it amazes me, they fit a stainless exhaust as standard but leave the back box in mild steel...
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#9 (permalink) Old 05-10-2003, 08:57 AM
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Quote:
Originally posted by e30_325_s52@May 10 2003, 07:48 AM
water/condisation in the exhuast precaution?
He said it was only on the right pipe. I think what fox says is perfectly legitimate. Good idea actually.

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#10 (permalink) Old 05-10-2003, 08:59 AM
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im gonna change the back box soon anyway, ive just got to find the box for a 328i that doesnt sound like a rice rocket...... :vroom
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#11 (permalink) Old 05-10-2003, 09:04 AM
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Rogue Engineering or Remus makes wicked bad ass exhausts, I dunno about your car though.

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#12 (permalink) Old 05-10-2003, 09:04 AM
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A box? is that another funky word for trunk?...

And they have these flaps here on a few autocross cars... great for comin out of turns on low revs.

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#13 (permalink) Old 05-10-2003, 09:13 AM
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Originally posted by Fox@May 10 2003, 02:04 PM
A box? is that another funky word for trunk?...

And they have these flaps here on a few autocross cars... great for comin out of turns on low revs.
sorry..... what we call the back box is the last silencer section on the exhaust......

would an M3 exhaust fit a 328i??????? it is a double pipe all the way along?
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#14 (permalink) Old 05-10-2003, 09:26 AM
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i think all the e36 mufflers fit on the same chasis except maybe 318... so yes

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#15 (permalink) Old 05-10-2003, 09:28 AM
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yeah, i think they all fit except for the 318ti. the only true dual exhaust i know of is the UUC Twin Silencer Exhaust. it is true dual pipes all the way through.

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