DINAN Exhaust or BMW Performance Exhaust?

[Rana135i]

Hey everyone! I am just trying to figure out what exhaust to put on my 2011 135i. I am torn between getting the DINAN free flow or the BMW Performance exhaust.

Thoughts?

[Everfly]

The PE cheaper and come with the Y-pipe and sound great. I would say go with the PE. Beside exhaust only give you mean sound anyway.

[ilikebmxbikes]

i have the dinan exhaust and it sounds awesome paired with my berk midpipe. I am happy with everything other than the price.

[cwg]

I have the BMW PE - I love it car sounds so sweet with a nice burble - burble got louder and more prounounced when I did the PPK - never heard the Dinan - but I am super happy with the PE.

[GaryS]

BMW PE is louder. Some people complain that the BMW PE drones at highway speed. I don't know if they all do. I do know my Dinan exhaust does not drone. I prefer the note of the Dinan, but I think that's personal taste. Which tips you prefer is also personal taste.

[yaymitch]

Am I missing something? The Dinan costs $1299.00 and the BMW PE is $1250.00. Not much difference in price...

[ilikebmxbikes]

Originally Posted by yaymitch

Am I missing something? The Dinan costs $1299.00 and the BMW PE is $1250.00. Not much difference in price...

The PE comes with a Y pipe. The dinan you actually have to cut your stock axelback and weld it on.

Both exhausts burble a lot. I agree the BMW performance exhaust is slightly louder than the dinan probably due to the Y pipe alone.

Some people have suggested the BMW performance may be a stock 135 muffler with the Y pipe and chrome exhaust tips and the exhaust note change be simply attributed to the Y pipe. They look identical but we wouldn't know unless someone cut one open.

[tawheed]

The PE can be had for $850ish from vendors on this forum.

[yaymitch]

Thanks for the info

[Rana135i]

Thanks guys! The input really helped

I have been hearing a lot of good things about both.

As for pricing, yeah they are very close. I think I am going to go with the Dinan, does anyone know if its a full system straight from the headers, or if the pipe size is any bigger? The guys at BMW have not really told me much about it.

[gary442]

I have the BMW Perf Exhaust on my automatic 08 135i....I did not install the y pipe ( although it is sitting in my garage) , I also have the Dinan stage 1 tune and ETS larger intercooler. For me the BMW PE is a perfect sound with ZERO drone. I bought mine on Ebay from Newton BMW for $800 delivered---a price that is hard to beat. The Y pipe eliminates the resonator and does increase sound.....I was going to install it after I lived with the axleback for a while but as I said , for me, the sound is just right without installing the Y pipe.

BTW, I originally had the Berk street axleback and for me the drone was awful.

[Pablito1702]

Originally Posted by gary442

The Y pipe eliminates the resonator and does increase sound.....I was going to install it after I lived with the axleback for a while but as I said , for me, the sound is just right without installing the Y pipe.

BTW, I originally had the Berk street axleback and for me the drone was awful.

I am running the same PE (no Y-pipe) but with an N55 mid-pipe and also no drone. Before with Y-pipe installed I had drone at cruise in the low 2K rpms. Interesting that the Berk axle-back produced drone when you had your resonator installed. I always assumed the resonator was the key to eliminating drone.