BMW e39 M5
Posted: Sat Jun 15, 2013 2:41 pm
Ahead of the supercharger arriving I took the car to a rolling road in Derbyshire to get a baseline reading.
The e39 M5 has both DSC and ABS which work together, there is a button for turning it "off" however from all the stories on the net about how it wont actually turn "off" you may as well try farting the national anthem while standing on one leg and see if that works.
It also has a "sport" mode which merely switches the fly-by wire throttle to a more aggressive map.
First run was with the DSC and ABS functional and without the sport button on. It went all the way to 7k and returned 354 at the flywheel. Not quite what I was expecting but it was the first run.
Second run we disconnected the DSC and ABS by pulling the fuses - 308 bhp
Ouch this is getting worse so we put the fuses back in and the third run went into limp home mode almost immediately
Fourth run we had the sport mode on and the DSC cut the power at 5700rpm, which is exactly what it should do. However when we looked at the plot this time it was showing a solid 50 bhp gain over the first run all the way up to the cut off at 5700rpm. My guess is that if it had reached 7k it was on target for a standard 390-400bhp.
This begs the question does the normal throttle map ever give the engine WOT or is it only sport mode which does that........oh yes and how the foooook do you dyno an e39 M5
The e39 M5 has both DSC and ABS which work together, there is a button for turning it "off" however from all the stories on the net about how it wont actually turn "off" you may as well try farting the national anthem while standing on one leg and see if that works.
It also has a "sport" mode which merely switches the fly-by wire throttle to a more aggressive map.
First run was with the DSC and ABS functional and without the sport button on. It went all the way to 7k and returned 354 at the flywheel. Not quite what I was expecting but it was the first run.
Second run we disconnected the DSC and ABS by pulling the fuses - 308 bhp
Ouch this is getting worse so we put the fuses back in and the third run went into limp home mode almost immediately
Fourth run we had the sport mode on and the DSC cut the power at 5700rpm, which is exactly what it should do. However when we looked at the plot this time it was showing a solid 50 bhp gain over the first run all the way up to the cut off at 5700rpm. My guess is that if it had reached 7k it was on target for a standard 390-400bhp.
This begs the question does the normal throttle map ever give the engine WOT or is it only sport mode which does that........oh yes and how the foooook do you dyno an e39 M5
, i have seen one completed and it did sound pretty mental, good luck with the install, did you get it from Evolve or is it an ESS job and a rear ehaust box delite is a must, had mine done and it sounded sweet