Would this require a OEM M5 bumper cover that has cutouts for dual's, or do they alter the existing cover? Im interested.

 

Any pics from the friend's install?

 

I'll yell at him and see if he can post up some. I only have a rear view and I don't want to post his pics. He did go with the M5 rear with the dual cutouts. I have the the MTech rear with single cutout from Unitza and I'm looking for a diffuser that will fit and have dual cutout. I actually like the Mtech rear better than the M5 but I might have to break out and purchase a new rear bumper...! I call Umnitza last year and they had the rear diffusers with dual for around a 100.00. I called the other week to order it and now they say it's not available. The guy there and I won't mention names, told me this was mistake and they actually sent them out with orders and some returned and others kept and thats kinda what happened... bla bla bla..... I wonder sometimes what these guys are thinking? A diffuser in such a way with dual cutouts WOULD require a special tool for this, unless they created an insert in the current tool to option this feature in. So, bottom line is, the only mistake would be that Umnitza got these sent to them, and NOT the fact that the actual part does in fact exist. I think sometimes these guys that answer the phone think we are all really stupid... My end guess, is that they want to sell me a new bumper. So if I do this, I will be departing with my Dinan Exhaust. Sad, but I really like the look of duals.

 

Guys, as soon as I return back home for the holidays I will post up a build thread of what I did with detailed pics and part numbers of my exact setup. If you are lucky I will try and post a video on YouTube so you can hear the result. I have a 530i so I'm not turbo charged so the sound may differ slightly but I highly doubt by much. I know how frustrating it can be looking for a custom dual exhaust so I will do my part to contribute

 

Just signed up, trying to find the best exhaust for my '10 535i. Was looking at Dinan because its not so loud. Really want an exhaust tat sounds good when I start and rev, this is my dd and I'm not interested in a very loud exhaust. Should I consider CAI too? Appreciate the insight from this forum.

 

I love my Dinan! the sound is great, not too loud but loud enough to turn a few heads. The appearance is nice since the diameter of the tips are a little larger. My only issue is wanting the dual exhaust look. Another member sent me a link for a rear diffuser with dual cutouts and I tell ya, I am tempted to try it!

As for the CAI, I don't thinkink there is any help for the 535 on this other than the RPI scoop. I had the Injen sudo CAI intake on mine and threw the 1/2 eng limp mode three times over a six month period. The last time I took the damn thing off and have not seen the issue since! I'm convinced the air it was getting was just too hot and the Turbos didn't like it.

 

Thanks TonyB, I like the Dinan too. Just heard the RPI on youtube and that sounded great too. Interested to hear your take on the CAI, I was looking at the aFe one b/c of the noise (not looking to get much performance from it). Have you done any Dinan Stage1 or 2 software upgrades? Thanks,

 

No Dinan but I have installed the JB4 and its GREAT!

 

There are several dual exhaust diffusers out there. One is in Atlanta and seems to fit OEM MTech I'm not sure if it will fit a aftermarket though and of course there are a few on ebay as well but come from China. My guess is that this would have a better chance of fitting aftermarket. I asked this question to the seller but they have not responded. Part is like 179.00 and shipping is 75.00 and if it doesn't fit I guess I could return it and be out the 75.00 maybe have a few drinks then go ebaying....

 

For 75 shipping, I might ride down to ATL and take a look, buy if you like it. May avoid shipping back at your costs. ATL is not too far from upstate SC.