Well I ordered & received the E90 M3 Eisenmann Sport Exhaust & Eisenmann connecting pipes from IND yesterday!!!
This will be a little bit DIY (I installed it myself) and of course my initial take on the sound...
I got to the end of making this post & realized that I never mentioned my application for going with the Sport over Race Exhaust. My application is that my E90 M3 is my family car that I use almost daily. I have a 15 month old daughter that rides in the car most of the time (when she's not in mommy's X5) and I can't have an exhaust that is too loud or that has a very bad drone. I wanted a much deeper sound than stock and the Eisenmann Sport Exhaust sounded like the perfect exhaust for me...
The Eisenmann Sport Exhaust & Connecting Pipe comes VERY well protected from IND (as did ALL of the products from IND I've purchased):
The quality of the connecting pipes & Exhaust are as expected! I started by unwraping the connecting pipes and clamps:
I started to unwrap the Exhaust & found myself having the pipes where the Eisenmann Connecting Pipes attach to only exposed, so I realized it would be wise to make sure that they would go together smoothly now, instead of fighting with it whlie I was under the car. So I then grabbed the collapsing ring from the clamp:
and placed them around each pipe opening & used a small mallet to make sure the Exhaust pipe opening was almost completely round to accmodate each connecting pipe:
And then test fit each connecting pipe:
Satisfied that I just saved myself from throwing something after getting pissed off & being forced to do more work uncomfortably under my car...I unwrapped the Bad Boy!!!
Eisenmann E90 M3 "Limousine" Sport Exhaust:
One benifit of buying stuff from IND is that after you unwrap your parts, you have supplies that can be re-used for wrapping anything you desire. This is just the bubble wrap I saved:
I also have A LOT of microfiber cloth sheets from other IND products they have shipped me that I've washed & use when washing my car!
Anyway...I then decided it would be wise to cover up the exhaust tips during the install (actually re-used 2 microfiber sheets from IND, lol):
From here I pulled my E90 M3 up on ramps to have access to working on the job at hand:
Well, I went under the car to see what I needed to do. I unbolted the stock clamps and remembered from my Jeep days, that some soapy water would help lubricate and loosed the rubber exhaust hangers. So I grabbed a device that we got on our last trip to Disney World...My 15 month old ripped off all but one of the rubber propellor blades already, so thanks to Mickey Mouse & my daughter Emma, I was good to go with a soapy spray bottle:
I'm not showing it, but the soapy water helped (along with a small crowbar) to get the stock exhaust off of the rubber hangers & with the help of my rolling jack, got the stock exhaust out:
From the picture, you also see that you have to unscrew the rear 2 bumper screws & unscrew 2 sprocket head type screws to get the exhaust out without doing any possible damage to the rear diffuser area. It was much easier taking off the rubber hangers on the rear of the stock exhaust after it is taken out.
You then transfer over all the parts from the stock exhaust to the Eisenmann Sport Exhaust. I the rigged up my rolling jack & started to get the Eisenmann exhaust into place (sorry about the bit of blur in it):
From here, I jacked up the exhaust & loosly tightened the exhaust into place. I then connect each connecting pipe & hand tightened them. Once both connecting pipes were installed, I proceded to fully tighten the exhaust nuts. Then I went back & fully tightened each connecting pipe.
I took the microfiber cloths off the exhaust tips & here is the finished product:
OK...as a VERY initial opinion when I first started up the car, it sounded a little deeper than stock, but my car was nowhere near warmed up, nor was the exhaust of course! It was dinner time by then, so I had to call it a night.
Well...today I was able to take a drive up north a bit & really made an effort to "hear" the exhaust compared to stock. I drove with the music almost not on to fully on (how I listen to it).
Around town & in the low gears & low rpm (1000-3000) it is very deep and then lessens. In 4th gear & around 4000 rpm you can't even hear the exhaust.
On the highway, there is a little drone at 80 mph & in 6th gear, but it is right at the same level as my Nitto tires sound I normally heard, so it wasn't a problem. Also, this was after the engine was warmed & the Eisenmann exhaust was warmed up.
Inside the cabin you honestly barely hear the exhaust until you get on the gas. And when you get on the gas, the noise level inside the cabin is no more than the stock...BUT SOUNDS mean & so much better then stock!
So I've only put maybe 30 miles in today & it's still a while for the exhaust to fully break in...but so far, I absolutely LOVE the Eisenmann Sport Exhaust for my application!
Also HUGE props again to IND for providing me with another great product that was protected like no other company I've ever dealt with!