Eisenmann BMW E92 M3 Dyno Day

BMW M3 | February 19th, 2009 by 7
dsc0778rwc4

Our friends at IND-Distribution visited Fall Line Motorsports, Chicago’s premier BMW and European Race shop, for another tuning experience. Nate, one of the stars at …

Our friends at IND-Distribution visited Fall Line Motorsports, Chicago’s premier BMW and European Race shop, for another tuning experience. Nate, one of the stars at IND offered to share their experience with us and see what can be done with a BMW M3.

A couple of us from IND had a chance to go to Fall Line Motorsports to dyno our Eisenmann Race exhaust system, and I was so excited about the results, I wanted to share them with the BMWBLOG readers as soon as possible! With Fall Line’s busy schedule, and our constant Eisenmann shipments arriving and leaving, it’s quite difficult to make time to dyno a system, but the sound of the Eisenmann revving all the way to 8,000rpm was well worth it!

Eisenmann BMW E92 M3 Dyno Day

When we arrived at Fall Line, they had one of their own E92 M3s up on a dyno, ready to install our Eisenmann system. We felt that using someone else’s car, in bone stock form, was the most unbiased way to test the exhaust. Fall Line had just finished dynoing the car in stock form earlier that day.

Look at the grippy Michelin Pilot Sport Cup tires! These have gotten to be pretty infamous because of the M3 CSL.

Eisenmann BMW E92 M3 Dyno Day

Here’s the stock system, next to our Eisenmann Race.

Eisenmann BMW E92 M3 Dyno Day

Fall Line’s technician installed the system in about a half an hour, using Eisenmann’s new connecting pipes.

Eisenmann BMW E92 M3 Dyno Day

Here’s another shot of the Eisenmann system installed on the car.

Eisenmann BMW E92 M3 Dyno Day

The E92 M3 rolled back on to Fall Line’s all wheel drive Mustang dyno, and I was already getting shivers down my spine as the car’s exhaust note echoed off the building walls. As the Eisenmann system had never before been dynoed, I knew that something truly unique was about to happen.

Eisenmann BMW E92 M3 Dyno Day

Although I hadn’t seen the E92 M3 Eisenmann system tested in terms of actual power output, I was confident that Eisenmann’s exhaust would be much more efficient than the OEM muffler, due to their hundreds of hours of testing on machines such as this one, that simulate exhaust flow through various canister designs to optimize efficiency. Eisenmann does not release horsepower figures, as they are actually less precise than the flow efficiency readings Eisenmann is capable of generating at their facility!

Eisenmann BMW E92 M3 Dyno Day

As the dyno run started, I was absolutely deafened by Fall Line’s 70mph fan. I’ve been to many dyno facilities, and have never seen a fan of this size. This fan allows for very repeatable tests, as it simulates real airflow through the car’s cooling systems.

The numbers achieved were very impressive indeed: the M3, equipped with the factory exhaust system, achieved 351 wheel horsepower, a very realistic number when considering the car’s 400 crank horsepower rating, and the repeated runs that corroborated this number. This M3, when tested with the Eisenmann system only an hour and a half later, produced 364hp at peak- a 13hp gain! Even more interestingly, 100rpm earlier, at 7900 RPM, the Eisenmann system produced 363hp, while the factory system only allowed the car to produce 348hp- a 15hp gain!

Eisenmann BMW E92 M3 Dyno Day

Here’s a screen shot of the dyno graph of this particular stock vs Eisenmann run. Because Fall Line is a very busy shop, I have not yet received the data from the many other runs, and therefore can’t yet post a dyno graph of the average of the runs, or the correction factors used, or conditions during the run. I’ll continue to update this post as more information comes in. The highest gain seen with the Eisenmann system was 16 wheel horsepower, while the lowest gain seen was 15 wheel horsepower, so the final dyno graph should not change much.

Eisenmann BMW E92 M3 Dyno Day

Although this doesn’t have anything to do with our dyno testing, I just wanted to post another photo of my current automotive crush: this beautiful white 997 Cup car. The car’s level of preparation from the factory is simply astonishing. This car is truly one of the most gorgeous factory built racecars I’ve ever seen.

I hope this information was useful to everyone! I’ll keep people updated as we release dyno test conditions and averaged runs.

  • Mauro Corti

    Interesting… nice exhaust system, 13hp more than the original one is great, but what does this exhaust cost?

  • Marc

    The price is at a premium for Eisenmann. Lets put it this way…how much do you THINK an exhaust from the Manufacturer of OEM Porsche exhausts cost? All that aside I am actually saving up to get one for my 135i….If i were to put all exhaust comany’s side by side and look at fit, quality, and finish without looking at price then Eisenmann would be top 3 and probably #1 in my book.

  • http://www.bmwblog.com Horatiu B.

    @Marc: True, the price might be high, but…like you said, it’s a premium brand.

  • Pingback: Prototype photos of Eisenmanns new C350 exhaust system! - Page 3 - MBWorld.org Forums

  • Ed S.

    Like the old saying goes, “if you have to ask…”

  • http://www.facebook.com/profile.php?id=1355344571 Alexander Phillippe

    I like it, however I’m more partial to the Tubi Style one. I think it has a better growl to it.

  • Pingback: Eisenmann Race Performance BMW E92 M3 Dyno Day «

BMWBLOG

NEWSLETTER