[KillerB]

Does anyone know for sure if the M Performance Diffuser will work with the 2021 Lci M550i with a Remus quad exhaust? https://www.ebay.com/itm/174580234370

[tjbuggy2b]

All of the G30 rear attachment points are the same, or at least no one has reported anything contrary. You just get a different diffuser/rear bumper cover, depending on trim. So, as long as you have the M aero package, nothing else should be needed to fit that diffuser.

[KillerB]

There are some differences reported on this forum. Pre-Lci and Lci diffusers apparently don't have the same opening for an aftermarket exhaust and will not fit. I just need to know which if any of the M performance diffusers will fit with the aftermarket Remus exhaust? I can do the M5 diffuser but prefer the above mention for a cleaner look.

[tjbuggy2b]

Oh, yeah. I totally forgot that there are two different part numbers for pre/post LCI models.

My understanding is that the M Performance diffuser will fit the Remus exhaust tips. They better. That's what I ordered (from RWCarbon) too. lol.

[KillerB]

Okay! Thanks! I will give it a try. Something has to work.

[Joe-BMW33]

This one will fit Dinan 4" quad tips and I know I have seen Remus people using it as well. It fits my Dinan tips perfectly.

https://www.ebay.com/itm/224301797747

[KillerB]

I literally just ordered that one from eBay. It said last one and I got it. I read one other thread that pointed me in the direction of that same one. I also watched 2 YouTube videos that people used the oem diffuser after I read that it will not fit. Who knows? Maybe they modified the oem diffuser.

[Joe-BMW33]

Originally Posted by KillerB

I literally just ordered that one from eBay. It said last one and I got it. I read one other thread that pointed me in the direction of that same one. I also watched 2 YouTube videos that people used the oem diffuser after I read that it will not fit. Who knows? Maybe they modified the oem diffuser.

Nice, yeah, that seller gets stock and sells out quickly. Have to time it right. As I have mentioned before, I went into it thinking, what the hell, if it's shit, the cost almost makes it disposable. Very happy with it. Fit my stock tips perfectly and even better fit for the quads.

[KillerB]

Yes! That's what I am talking about. Best news that I've heard this week! Like a kid in a candy store.

[EGRM550i]

I just ordered that same piece last night. It was also listed as “last one”. Looks like it shipped this morning already so excited to get it installed as I also have the Dinan quad tips.

[KillerB]

Finally installed mine this morning. I still plan on having my original painted satin black.

[EGRM550i]

Looks great. Any install learnings / suggestions to share? Looks pretty straight forward but always open to feedback from those who have gone before!

[KillerB]

Too easy to install. Straight forward. 15-20 minutes tops!

[sportzfan76]

Originally Posted by Joe-BMW33

This one will fit Dinan 4" quad tips and I know I have seen Remus people using it as well. It fits my Dinan tips perfectly.

https://www.ebay.com/itm/224301797747

Yes, this is the only one I could locate that accommodated the Remus tips

[Lee caddy]

work, same buckle.

[imitenotbecrazy]

Originally Posted by KillerB

There are some differences reported on this forum. Pre-Lci and Lci diffusers apparently don't have the same opening for an aftermarket exhaust and will not fit. I just need to know which if any of the M performance diffusers will fit with the aftermarket Remus exhaust? I can do the M5 diffuser but prefer the above mention for a cleaner look.

So besides the size of the exhaust opening, pre LCI and LCI diffusers on the M aero bumpers are interchangeable? I've stated at the two for far too long trying to see if there was a reason you couldn't put an LCI on pre LCI but couldn't find one