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Old Feb 23rd, 2013, 06:58 PM
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Engine not keen to rev past 4000rpm

Hello all, not posted here much but been a 2 time mini owner and have used this site to understand and fix most of the problems i had on my old gen1 cooper.

I have had a search and don't see anything similar to this one on my newer MCS, so here is the problem:

The car is a 2006 MCS convertible, so the first yr that that the new engine went into the rag top. It has 30000 miles on it and although used mostly for commuting, it gets thrashed when the conditions suit

So today I was out in the Cotswolds and went for a quick overtake and I thought the engine was a bit flat and I wasnt accelerating like I expected so I aborted the overtake and did a quick experiment. I was in 3rd at about 3000revs and the sport button on, and I floored it and guess what, it wasn't that keen to get past 4000 and there was no way it was going to get to the redline!! Doing this I would normally expect it shoot through the revs like a scalded cat, but repeated tests didn't give me any different!
The bottom end and mid range feel the same, just the top end revs are not there!

Is it the electronics or do I have another problem? All help gratefully received as I am not keen to go pay mini prices for them to try and diagnose this.


Edit, I did try ignition off and back on, and on the return trip it felt a bit better, but still not full fat.
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Old Feb 26th, 2013, 07:47 PM
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I had the same problem, made a post about something related. The turbo wasn't kicking in properly. Check the turbo air intake is secure and pushed all the way on. Oil works it's way in and allows the pipe to work it's way off.
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Old Feb 26th, 2013, 09:06 PM
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WHS ^^ Sounds more like a turbo problem, as it should kick in at those revs, can you hear the turbo whine at all when you boot it?
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Old Feb 27th, 2013, 05:56 PM
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On the R56 we notice a lot of issues where the ecu will limit the boost, proberly best to book it to your local MINI specialist who has teh right diagnostic equipment and a rolling road.
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