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Spoke to Rob at DMS this morning who gave me some more details on their remap.
1.) The car produces quite a bit more bhp / torque than BMW claim. The increase in bhp is not 60-70bhp, but rather around 30-40bhp. This still takes the car up to around 400bhp. He did say that all of the seven 1M's they've tuned have been between 402-405bhp.
2.) There are no issues with heat build up / limp mode unless you are running at above 140mph. However this has nothing to do with the remap as apparently even the standard car loses around 10-15bhp at these speeds.
3.) They have tested the remap on a few 1M's out in Singapore (they have a facility out there) and have run the car hard at high speeds without any problems. It is also a lot more humid out there and they have not had any issues.
4.) Rob said that the 1M was a "very fast car" and that he "loved them". He went on to say that so many people dismiss them and don't appreciate how fast they actually are. He also added that they had tested replacing the secondary and primary cats with bypass pipes, but it made very little difference in power as peak power is around 5800rpm and to get the benefit of de-catting a car, you would normally expect to see the power higher up the rev range. As you don't need to go that high, it didn't actually add much.
5.) Expected figures after the remap are 400bhp and 445 lb/ft torque.
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