691BHP!!
Posted: Wed Sep 03, 2014 9:44 am
Well yesterday was the day my car visited DMS for a fettle & holy mother of all a things holy did they do a fantastic job (under difficult conditions).
My M5 is a MY15 & therefore has a few changes to certain software elements that DMS hadn't encountered yet (specifically the dashboard in this case) & therefore didn't have code for so it's a good job their remaps are Custom or i'd have been driving round with an Xmas tree in front of me with lights illuminated everywhere. Rob line by line corrected the code, cleared all the relevant fault codes & i'm just left with a check engine light (knew in advance this would be the case) for which he'll have the corrected line of code in a week or so & apply that when suitable. It was a trade off by having the check engine light illuminated or having no gear change display in the centre of the dash (this is different on MY15 cars as has an upshift indicator).
Firstly my car was dyno'd to get a pre map plot & we were more than a little surprised at the results. I should point out DMS use a Dyno Dynamics system. My car stock was putting out 640bhp, which was the strongest F10 they'd seen, although all (i think they said 3) had read over 610bhp stock. We knew that at this level the physicals gains were unlikely to be as high as previous F10's they'd tuned given the base power was higher, however the end result was 691bhp. Note the car was running quite hot by this time as had been on the rollers a while so DMS could fine tune the code & my car has only done 4500 miles.
With cooler temps & more miles on my car, they're confident it would have just topped the 700bhp mark.
The drive home was something else & the extra power is most noticeable in the mid range where the car has gone from being ballistic before to intergalactic now. The power & torque curves on the F10 M5 are a shaped a bit like a lemon so the gains at the bottom & top of the rev range are closer together than the middle. The uplift in mid range is close to 100bhp.
Given the issues encountered, i was running out of time as had been onsite for 7 hours & needed to get away so DMS couldn't test on the rollers in the speed limiter had effectively been removed. I'm off to Germany on Saturday so will check this out on the Autobahn. I also forget to collect my dyno plots so these are being sent to me & i'll post them up when i receive them.
My M5 is a MY15 & therefore has a few changes to certain software elements that DMS hadn't encountered yet (specifically the dashboard in this case) & therefore didn't have code for so it's a good job their remaps are Custom or i'd have been driving round with an Xmas tree in front of me with lights illuminated everywhere. Rob line by line corrected the code, cleared all the relevant fault codes & i'm just left with a check engine light (knew in advance this would be the case) for which he'll have the corrected line of code in a week or so & apply that when suitable. It was a trade off by having the check engine light illuminated or having no gear change display in the centre of the dash (this is different on MY15 cars as has an upshift indicator).
Firstly my car was dyno'd to get a pre map plot & we were more than a little surprised at the results. I should point out DMS use a Dyno Dynamics system. My car stock was putting out 640bhp, which was the strongest F10 they'd seen, although all (i think they said 3) had read over 610bhp stock. We knew that at this level the physicals gains were unlikely to be as high as previous F10's they'd tuned given the base power was higher, however the end result was 691bhp. Note the car was running quite hot by this time as had been on the rollers a while so DMS could fine tune the code & my car has only done 4500 miles.
With cooler temps & more miles on my car, they're confident it would have just topped the 700bhp mark.
The drive home was something else & the extra power is most noticeable in the mid range where the car has gone from being ballistic before to intergalactic now. The power & torque curves on the F10 M5 are a shaped a bit like a lemon so the gains at the bottom & top of the rev range are closer together than the middle. The uplift in mid range is close to 100bhp.
Given the issues encountered, i was running out of time as had been onsite for 7 hours & needed to get away so DMS couldn't test on the rollers in the speed limiter had effectively been removed. I'm off to Germany on Saturday so will check this out on the Autobahn. I also forget to collect my dyno plots so these are being sent to me & i'll post them up when i receive them.
