I got a 30 HP wheel gain with full Supersprint system:
My Supersprint factory visit via Monaco and Ferrari: a 6000 km trip (4000 miles)
Arriving at Supersprint in Northern Italy.
After driving from Monaco we drove through Italy and straight for a hotel close to Supersprint factory. Superpsritn manufactures both exahusts but most importantly headers for the E39 M5 and E60 M5 and M6, so for both V8 and V10 versions of the M cars.
The plan was to test a full Superpsrint exhaust on the E39 M5 and dyno it before and after. The E39 M5 was completely standard with standard ECU. The only modofication was removed top-speed limiter from Hartge but the engine ECU was not tampered with.
Secondly I was very curious to see the difference in design of the standard M5 headers for both the V8 and the V10 and the Supersprint ones. I have documented this both on video and on pictures, which you can find below. I found it easy to see where the extra HP came from and how restrictive the original headers where after my visit.
Arriving to Supersprint and we are reserving at leasta full day for the installation of the system.
Accompanied by a Jaguar...
Here the E39 M5 Superpsrint headers are assempled. The four different "pipes" can be separated since that makes installation much easier and you do not have to lift the engine of the car when the all parts are not in one piece.
A brief glance of the difference between the E39 M5 original headers to the left and the Supersprint to the right.
Here is the complete system that will be installed with racing cats, headers, x-pipe and exhaust. I chose the less loud "Magnum" exhaust instead of "Race" exhaust.
Supersprint does engravements and production of many exhaust tips for companies such as Audi tuners MTM and ABT and also for OEM manufacturers as Seat's race departement.
Race cats are smaller than the standard cats.
The total savigns in weight are compared to the standard system is around 50% to around 45 kg in total for the full Supersprint system.
Here you clearly see how restrictive the standard E39 m5 headers are with the exhuastes pushed out of the engine into almost a "wall" instead of a rounded curve.
The Supersprint headers the bends are more formed after so the exhausts can go smooth our from the engine.
Video 4: comparison of standard BMW M5 E39 headers and BMW M5 E60 headers. Click here.
Here you can see a comparison of the BMW M5 E39 headers and the Supersprint headers for the E39 M5 V8.
Time to dyno the car both before and after the modifications.
We had decent fans but it was quite hot, but the dyno did correct for this.
O2-levels was also measured before and after the catalysts before and after the modifications.
The car as standard 411 HP and after the modifcations it had 441 HP. This was with not any other changed than the complete exhuast system including headers. The car did feel more powerful afterwards and alot more rev-happy. The power increased over 4000 rpm and the characteristics was a bit more rev happy than before. Although I think a standard E39 M5 would be able to outrun a 2006 Audi RS4 this Supersprint system sure did help to really win the race. See
this link for a Supersprint BMW M5 vs Audi RS4 2006.
Video 5: The Supersprint dyno of the BMW M5 E39: Click on the image below or
here for the dyno run with the full Supersprint system.
The Supersprint headers fro the E60 BMW M5 and the E63 BMW M6
Here are som parts of the headers to the BMW M5 E60. Every "tube" for each cylinder is removable making (as in the E39 M5) installation easier so you do not have to lift the engine to install the headers. The springs makes the connection also a bit flexible and the round "thing" in the left lower corner above is working like a gasket between the parts.
The headers mounted along with the springs.
Many bends. At the extreme left you see connectioions for the O2 sensors.
Looking inside the connecting parts of the headers really makes you understand that the production is complex.
Here you can see a system for the BMW M6 compared to Supersprint headers.
The secondary catalyst of the original BMW M6 exhaust is above to the right. The Supersprint version only have one catalyst.
Supersprint headers compared to stock for the BMW M6 V-10.
Here is the catalyst for the BMW M5 Supersprint system.
Supersprint E39 M5 and E60 M5 headers next to each other.
A complete set above.
The holes where the screws should go in to the engine are more complex than one might think: it has to be accessible both to connect and disconnect the headers without lifting the engine or major disconnections of parts.
These are the headers for the Porsche 911 Carrera (996). Supersprint did make headers for many different cars which to me seems likea fundamental upgrade since you can see how restrictive standard headers are compared to aftermarket in most cases.
Video 6: Comparison of standard BMW M5 E60 headers. Click below or
here for an analysis on the Supersprint M5 E60 headers compared to the original headers.
On the video above you can see what compromises that had to be done when designing the original headers. BMW had to make some of the headers more narrow in order to make them more easy to fit and accessible with tools.
Video 7: BMW M6 on the Supersprint dyno. Click here.
Video 8: BMW M5 on the Supersprint dyno. Click here. And for second BMW M5 video
click here.
Above are three movies of BMW M5 and BMW M6 on the Superspritn dyno.
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