[abitrandom]

Hello All,

I am a new, proud leaser of a '21 X3MC and am looking for viable options in increasing the exhaust sound, while preserving the warranty under my lease agreement.

I've done some research and am leaning towards the Dinan Exhaust, however there is cutting involved and I am concerned about not being able to return the car back to its stock exhaust at the end of the lease.

BMW Manhattan used to be a certified dealer for Dinan Exhaust, and from researching the threads here, they were fine with installing it and keeping it within the warranty parameters.

Are there any other options that may work for me, that do not require cutting or that do not set off CEL Lights - that sounds a bit more aggressive?

Thanks,

Jorge

[LimeRock]

I don’t foresee any issues with a properly installed BMW clamp upon return. Very quick / easy to install the stock rear section back when you return the car.

Also realized I didn’t read the full post...you’ll just want to work from the midpipe back to avoid a CEL. Personally I went with an Eisenmann midpipe and I’m 90% happy with it. My only gripe relates to the flap behavior messing with sound in the midrange.

Also, congrats on the new X3M!!

[abitrandom]

Originally Posted by LimeRock

I don’t foresee any issues with a properly installed BMW clamp upon return. Very quick / easy to install the stock rear section back when you return the car.

Also, congrats on the new X3M!!

Thank you

[LimeRock]

Originally Posted by abitrandom

Thank you

Here's the link to a midpipe thread I created. https://www.bimmerpost.com/forums/sh...php?p=27254497

Dinan has been on back order for months, date keeps getting pushed. Not their fault, tough supply chain with covid.

[abitrandom]

Originally Posted by LimeRock

Here's the link to a midpipe thread I created. https://www.bimmerpost.com/forums/sh...php?p=27254497

Dinan has been on back order for months, date keeps getting pushed. Not their fault, tough supply chain with covid.

Thank you for the link.

This sounds great! Do you have the competition exhaust or regular X3M?

Pardon my ignorance, but does installing a midpipe require cutting? If so, can I put it back to stock by "clamping"? Since I'm leasing.

Any cel lights or emission issues? - I live in NY

[allinon72]

Easily clamp the OEM exhaust back on. Even if the dealer puts the car on a lift (they won't) they wouldn't notice.

[LimeRock]

Originally Posted by abitrandom

Thank you for the link.

This sounds great! Do you have the competition exhaust or regular X3M?

Pardon my ignorance, but does installing a midpipe require cutting? If so, can I put it back to stock by "clamping"? Since I'm leasing.

Any cel lights or emission issues? - I live in NY

Competition exhaust, although I think the hardware is fairly similar between the two. Emissions rule vary by state, but it will likely fail emissions with the removal of the secondary cat (which most full aftermarket exhausts remove). In Illinois, it’s after 3 years for a new car, at which point I will revert to stock and no longer own this vehicle.

No CEL with this setup as midpipe and back is after the O2 sensor. Agree with allinon72 on the back to stock clamping, shouldn’t be an issue at all.

[pluckydks]

Originally Posted by abitrandom

Hello All,

I am a new, proud leaser of a '21 X3MC and am looking for viable options in increasing the exhaust sound, while preserving the warranty under my lease agreement.

I've done some research and am leaning towards the Dinan Exhaust, however there is cutting involved and I am concerned about not being able to return the car back to its stock exhaust at the end of the lease.

BMW Manhattan used to be a certified dealer for Dinan Exhaust, and from researching the threads here, they were fine with installing it and keeping it within the warranty parameters.

Are there any other options that may work for me, that do not require cutting or that do not set off CEL Lights - that sounds a bit more aggressive?

Thanks,

Jorge

As others have said, you could just clamp the OEM one back on with no issues. If you truly don't want any cutting and straight bolt on, get a cat back exhaust and remove the gigantic exhaust and all its piping in one bolt off piece. Remus, Akrapovic, and I think Eisenmann have full cat bat options.

[GreatAvalon]

Originally Posted by pluckydks

As others have said, you could just clamp the OEM one back on with no issues. If you truly don't want any cutting and straight bolt on, get a cat back exhaust and remove the gigantic exhaust and all its piping in one bolt off piece. Remus, Akrapovic, and I think Eisenmann have full cat bat options.

Is one of the pipes flared to allow that? Or is there some type of over-pipe or something that you would put 2 clamps on - one on the engine side and one on the OEM exhaust side?

[pluckydks]

Originally Posted by GreatAvalon

Is one of the pipes flared to allow that? Or is there some type of over-pipe or something that you would put 2 clamps on - one on the engine side and one on the OEM exhaust side?

After the cat, there is a flange with bolts. So you would remove from there. The aftermarket piping would have a flange to bolt the mid pipes to the cat, then a clamp to the axle back exhaust.

If you're talking about after you cut, you would just use a clamp to connect the two pieces. There is already a factory cut point in case you ever needed to replace the exhaust in the first place. If you look on realoem dot com, it will show you the exhaust setup in pieces with the clamps.

[pluckydks]

Originally Posted by GreatAvalon

Is one of the pipes flared to allow that? Or is there some type of over-pipe or something that you would put 2 clamps on - one on the engine side and one on the OEM exhaust side?

Originally Posted by pluckydks

After the cat, there is a flange with bolts. So you would remove from there. The aftermarket piping would have a flange to bolt the mid pipes to the cat, then a clamp to the axle back exhaust.

If you're talking about after you cut, you would just use a clamp to connect the two pieces. There is already a factory cut point in case you ever needed to replace the exhaust in the first place. If you look on realoem dot com, it will show you the exhaust setup in pieces with the clamps.

Felt nice and looked it up for you...part 8
https://www.realoem.com/bmw/enUS/sho...diagId=18_1616

[abitrandom]

Originally Posted by pluckydks

After the cat, there is a flange with bolts. So you would remove from there. The aftermarket piping would have a flange to bolt the mid pipes to the cat, then a clamp to the axle back exhaust.

If you're talking about after you cut, you would just use a clamp to connect the two pieces. There is already a factory cut point in case you ever needed to replace the exhaust in the first place. If you look on realoem dot com, it will show you the exhaust setup in pieces with the clamps.

Doesn't the Eisenmann mid pipe have to be welded though?

[pluckydks]

Originally Posted by abitrandom

Doesn't the Eisenmann mid pipe have to be welded though?

What makes you think that?

https://ind-distribution.com/product...rmance-exhaust

https://ind-distribution.com/product...-non-resonated

Look at the link for the pipes. One end is flange, one end is open. Then look at the link for the exhaust. It has clamps.

Same for Remus and 99.99% sure same with Akrapovic.

[LimeRock]

Originally Posted by abitrandom

Doesn't the Eisenmann mid pipe have to be welded though?

Nope!

Warning though, the full cat back eisenmann setup is a track only affair — insane volume with no flaps

[abitrandom]

Originally Posted by pluckydks

What makes you think that?

https://ind-distribution.com/product...rmance-exhaust

https://ind-distribution.com/product...-non-resonated

Look at the link for the pipes. One end is flange, one end is open. Then look at the link for the exhaust. It has clamps.

Same for Remus and 99.99% sure same with Akrapovic.

I reached out to my mechanic and told him I wanted just the Eisenmann mid pipe installed with my stock exhaust - he mentioned it needs to be welded.. and it can't go back to the dealer like that.

So you're saying I can just install the mid pipe alone with no welding?

I'm seeing the diagrams of what you sent and it's all a foreign language to me lol.. sorry

I appreciate your input though, and everyone else's on this thread.

[pluckydks]

Originally Posted by abitrandom

I reached out to my mechanic and told him I wanted just the Eisenmann mid pipe installed with my stock exhaust - he mentioned it needs to be welded.. and it can't go back to the dealer like that.

So you're saying I can just install the mid pipe alone with no welding?

I'm seeing the diagrams of what you sent and it's all a foreign language to me lol.. sorry

I appreciate your input though, and everyone else's on this thread.

Then you either need a new mechanic, or just give up and stick with stock.

[GreatAvalon]

Originally Posted by pluckydks

Felt nice and looked it up for you...part 8
https://www.realoem.com/bmw/enUS/sho...diagId=18_1616

Such a nice guy, thanks

That's my answer...so you cut the OEM and when you want to go back to stock you buy 2 of the part 8's for $60 or so. Nice...so it is possible to revert back to stock for lease turn in...

[skioutwest]

I have installed mid pipes on my last three cars and used the clamps when returning the lease. Never an issue. In fact, I purchased knock offs clamps on Amazon and they were just as nice as the BMW clamps for a third the price.

I did not do my X4M yet though....

-Mark

[Kevin_The_Clean1]

Wondering if I removed my secondary cats & then put them back in at the end of the lease return, if that would void any BMW warranty...

[r33_RGSport]

Originally Posted by Kevin_The_Clean1

Wondering if I removed my secondary cats & then put them back in at the end of the lease return, if that would void any BMW warranty...

If you cut and weld at a point where it is not supposed to be, it may get you in trouble.

[Kevin_The_Clean1]

Originally Posted by r33_RGSport

If you cut and weld at a point where it is not supposed to be, it may get you in trouble.

I was afraid you might say that.

[arosey9]

Originally Posted by pluckydks

What makes you think that?

https://ind-distribution.com/product...rmance-exhaust

https://ind-distribution.com/product...-non-resonated

Look at the link for the pipes. One end is flange, one end is open. Then look at the link for the exhaust. It has clamps.

Same for Remus and 99.99% sure same with Akrapovic.

I am new here so please bare with me... so can I just take off the stock exhaust and put a new one on? As in bolt off oem and bolt on after matter as. See picture for reference.

[IMG][/IMG]