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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > General E90 Sedan / E91 Wagon / E92 Coupe / E93 Cabrio > Does the N54 exhaust fit in the car removed at down pipes?



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      05-03-2019, 12:22 PM   #1
TheMidnightNarwhal
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Does the N54 exhaust fit in the car removed at down pipes?

Would it fit with seats down in the car?

Also how loud is the car straight pipe (well no exhaust) from DPs? Would I get stopped immediately you think?
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      05-04-2019, 08:06 AM   #2
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Using a tape measure would tell you if it fits or not.
As for driving with only DP's I think it would be ridiculously loud.

Why would you even consider doing this?
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      05-04-2019, 02:36 PM   #3
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You know those stupid little questions you have in your head that you think about it for a second, and then figure out the answer? I think it's called common sense. I really wish that questions on this forum were more thought out. Rather than how many marshmallows can I fit into my mouth.
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      05-04-2019, 06:30 PM   #4
TheMidnightNarwhal
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Quote:
Originally Posted by Brandoch View Post
You know those stupid little questions you have in your head that you think about it for a second, and then figure out the answer? I think it's called common sense. I really wish that questions on this forum were more thought out. Rather than how many marshmallows can I fit into my mouth.
Right so I'm going to wait till my exhaust is removed to see if it fits. Or measure it but then one thing won't fit somewhere because it's hanging on one thing.

It's also called preparation. If someone knows the answer why not just say it. I'm not going to get the car up on a lift when someone can answer me online lmao. It's common sense.
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      05-04-2019, 08:12 PM   #5
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Quote:
Originally Posted by TheMidnightNarwhal View Post
Would it fit with seats down in the car?

Also how loud is the car straight pipe (well no exhaust) from DPs? Would I get stopped immediately you think?
There's gotta be a measurement of how long it is.

If anything, you can approximate it by looking under the car and drawing a line where the downpipes meet the mid-pipes. Then measuring back with a tape.
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      05-05-2019, 03:03 AM   #6
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Quote:
Originally Posted by TheMidnightNarwhal View Post
Right so I'm going to wait till my exhaust is removed to see if it fits. Or measure it but then one thing won't fit somewhere because it's hanging on one thing.

It's also called preparation. If someone knows the answer why not just say it. I'm not going to get the car up on a lift when someone can answer me online lmao. It's common sense.
The real question here is why do you want to remove your exhaust, put it in your back seat and then drive around...………
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      05-05-2019, 12:26 PM   #7
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Think you're gonna be risking possible melting of something in the area there with straight DP exhaust gases flowing under the car
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      05-05-2019, 12:52 PM   #8
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There's no way you're going to get the entire exhaust into your car without cutting it up. An E92 is 15' long, so let's say the exhaust is 10' long...try taking a 10' 2x4 and getting in the car without fucking up your interior...then think about the exhaust that makes a bunch of turns and bends and has 2 mufflers at the end of it. Not happening
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      05-05-2019, 02:45 PM   #9
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Quote:
Originally Posted by TheMidnightNarwhal View Post
Would it fit with seats down in the car? [Depends upon how many passengers you have ]

Also how loud is the car straight pipe (well no exhaust) from DPs? Would I get stopped immediately you think? [probably get stopped about the time you exit your driveway -- UNLESS: you route replacement pipes into the passenger compartment to muffle the sound -- then guaranteed you'll barely make it out of driveway]
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      05-05-2019, 03:36 PM   #10
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Quote:
Originally Posted by Emilime75 View Post
There's no way you're going to get the entire exhaust into your car without cutting it up. An E92 is 15' long, so let's say the exhaust is 10' long...try taking a 10' 2x4 and getting in the car without fucking up your interior...then think about the exhaust that makes a bunch of turns and bends and has 2 mufflers at the end of it. Not happening
Agreed.

A sawzall with a Diablo, carbon tipped blade would be a good idea to bring along. Also, a lot of bubble wrap & old towels. I'd cut the exhaust off where the mufflers meet the pipes, if it's welded there. That might make the pipes only 8 1/2 feet long.

You you could also cut the secondary cats off and have them welded back together.
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