dpf filter
- Thread starter jimbo
- Start date
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Not that I'm aware of. If it's there, you'll find an ugly pipe with a bunch of metal tubes coming off it under the front passenger floor.
DIRECT Dent Repair
Member
No it doesnt
It's a cat based DPF.
Still need to use special oil.
Doesn't do Regen cycle.
It's a cat based DPF.
Still need to use special oil.
Doesn't do Regen cycle.
That's it.
Basically - when the conditions for a regen are right - just before the valves close, the injector opens and squirts fuel into the outgoing gas, which enters the exhaust. Word was that the V6 diesel had an extra injector in its exhaust to make it more effective at delivering fuel for the DPF.
Regen conditions (YD25): engine RPM over 1500 (about 75-80km/h in top gear, but you can fake it in lower gear, it's after RPM purely for gas flow rates), engine load < 70% (I think), engine coolant temp < 105C and > 85C, HO2S reporting spare oxygen available. I'd suggest if the V9X had a DPF, its parameters will be similar because burning crap in the exhaust filter is not going to be any different.
Basically - when the conditions for a regen are right - just before the valves close, the injector opens and squirts fuel into the outgoing gas, which enters the exhaust. Word was that the V6 diesel had an extra injector in its exhaust to make it more effective at delivering fuel for the DPF.
Regen conditions (YD25): engine RPM over 1500 (about 75-80km/h in top gear, but you can fake it in lower gear, it's after RPM purely for gas flow rates), engine load < 70% (I think), engine coolant temp < 105C and > 85C, HO2S reporting spare oxygen available. I'd suggest if the V9X had a DPF, its parameters will be similar because burning crap in the exhaust filter is not going to be any different.
All cars actually pump a little fuel out to act as a reductant on their CATs. If the new V9X is using the CAT as a DPF as well, it not only will use the small amount of fuel for that, but maybe a little more to allow the soot to burn off.
Next time I see a newer 550 at the lights I'll try and drag him and I'll keep an eye on his exhaust looking for smoke (because there's no way my YD25 would be anywhere but behind him, if he's awake). I know that mine blows no smoke whatsoever - and the inside of my exhaust is still silver, 4 and a half years and 141,000km after purchase!
Next time I see a newer 550 at the lights I'll try and drag him and I'll keep an eye on his exhaust looking for smoke (because there's no way my YD25 would be anywhere but behind him, if he's awake). I know that mine blows no smoke whatsoever - and the inside of my exhaust is still silver, 4 and a half years and 141,000km after purchase!
DIRECT Dent Repair
Member
No extra injector on the Aussie models, only Europe models.
Robski
Member
Sorry to hijack but does that mean I can put a 3" cat back system on with deleted mufflers?
I don't see why you couldn't do that. Not sure if your model has the combo DPF/CAT but if you're just bolting on behind that it doesn't really matter what's there (or not there!).
Robski
Member
Thanks Tony, just more money to spend haha
DIRECT Dent Repair
Member
No problems with bigger exhaust
I've done that,an x force 3 inch, modded air box,plazmaman hard pipe hot side,egr blank plate and ecu tuned by Wayne from POWERCHIP.
I've done that,an x force 3 inch, modded air box,plazmaman hard pipe hot side,egr blank plate and ecu tuned by Wayne from POWERCHIP.
