Hi to all ,
Just bought a 406S 90hdi and apart from some problems to sort cant understand why it seems to be reving so much almost like a petrol engine on the motorway it was at 3000 rpm at 65mph can anyone shes a light on that ? So much more punchy than my old 90 and far far more than my 110
Thank you Guy
Rpm v mph ?
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Doggy
- Mod with a 2.2 HDi, De-Fapped!
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Re: Rpm v mph ?
HI & a belated welcome aboard. 
Not 100% sure of the correct gearing for a HDi 90, but it's about 29 mph / 1000 RPM, so you would expect to see roughly 2100/2200 RPM at an indicated 65.
Can't be due to the wrong wheels/tyres as the speedometer would be affected equally.
If you post or PM your car's VIN code, I'll look up the spec and let you know.
Not 100% sure of the correct gearing for a HDi 90, but it's about 29 mph / 1000 RPM, so you would expect to see roughly 2100/2200 RPM at an indicated 65.
Can't be due to the wrong wheels/tyres as the speedometer would be affected equally.
If you post or PM your car's VIN code, I'll look up the spec and let you know.
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)