406 2.2 HDi FAP / DPF removal

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Re: 406 2.2 HDi FAP / DPF removal

Post by GingerMagic » Thu Mar 16, 2017 10:15 am

Hi, I have had 2 406 2.2hdis - the first had a DPF and cat removed, the second was DPF only.
Absolutely no difference in performance at all, both cars passed MOT no problems with emissions.
I guess if you smash the guts out then it's less to go wrong, but if you chose to keep it, it will have no detrimental affect on performance.
1999 T4 family wagon
2005 Vauxhall Meriva
1998 406 V6 Coupe - Midlife crisis..!
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Re: 406 2.2 HDi FAP / DPF removal

Post by Doggy » Tue Mar 21, 2017 10:24 pm

Same here. If you do lots of urban stop-go stuff there may be some benefit in removing the cat, but otherwise I'd leave it in.
2002 HDi 2.2 Exec Estate, (2008-12)
2003 HDi 2.2 6-speed Exec Estate (2012-19)
2009 Citroen C5 2.0 HDi VTR+ Estate

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Re: 406 2.2 HDi FAP / DPF removal

Post by mrbizzy » Wed Mar 22, 2017 9:32 pm

After speaking to exhaust workshop i decided to empty the cat as well at the same go when removing the DPF contents.
as to have lees that can go wrong and less restriction for the turbo as i might get lucky to also remap the ecu with higher output power.

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Re: 406 2.2 HDi FAP / DPF removal

Post by dirtydirtydiesel » Thu Mar 23, 2017 12:36 am

Gutting the cat as well as the D.P.F allows the turbo to spool up quicker!
Turbo's like the least amount of resistance (resistance is futile) :supafrisk:
A 2.5 inch turbo back exhuast helps even more :cheesy:
2002 110 HDi estate, Rapier in monaco blue! ( found quite a bit more power :cheesy: )
1999 3.0 V6 SE coupe in Diablo Red ( my baby )
2006 206 1.4 16v sport in Aegean blue ( wife's shopping trolley :roll: )

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