Well, my 406 SRi is now finally on the road - and I had a few things to tidy up tonight.
Dash lights - fixed
Water leak - fixed (for now)
Also fitted a boost gauge and manual boost controller. Now, it's been so long since I did anything with these engines (used to fit them to 205/306/309/405s all the time) that I can't remember what sort of levels of boost they can safely run.
So, anyone know what I can safely turn the boost up to on an otherwise standard 406? Only mods are a dump valve, cheapo cone filter and the centre silencer is removed.
Thanks.
'standard' 406 SRi - maximum safe boost?
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Doggy
- Mod with a 2.2 HDi, De-Fapped!
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Re: 'standard' 406 SRi - maximum safe boost?
I think the general view is don't. They never seem to last if you increase it at all.
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)
Re: 'standard' 406 SRi - maximum safe boost?
All the old ones we did lasted just fine - and they were all pretty damn quick!
Re: 'standard' 406 SRi - maximum safe boost?
The standard ecu will cut the spark if the boost goes over 1 bar, for any more you either need to change the map sensor in the ecu and find someone that can remap it or go for an aftermarket ecu.