Gas or Diesel P. Cayenne

[ChunkyLover]

Would you pick a diesel or gas engine?
-same power 0-120kph
-gas has higher top speed (300hp, 400NM at 3,000rpm)
-diesel has more powerful low end torque (240hp, 550NM at 2,000rpm)
-diesel has better fuel efficiency (recommendation is to only use V-power diesel) NO BIODIESEL
-gas has start stop tech.
-diesel engine has less noise than the gas at high revs

already made a choice, just wanna see what most people would prefer
A kind reply would be appreciated... thx

[ghosthunter]

practical choice is diesel.

purists will be getting the 911, not the cayenne.

[ChunkyLover]

Shell lang ba may clean diesel na hindi biodiesel? kasi nakakatakot kc diesel satin

[rattrapante]

If I was buying a porshe, I am pretty sure fuel efficiency would be the last on my mind, so I would get the Gas version. For such a high performance engine and our poor diesel quality it can easily spell early engine failure.

[ChunkyLover]

actually i picked the gas, but i wanted the diesel version because of its torque... but i was afraid of the quality of diesel... thanks for the input... much appreciated

[ghosthunter]

actually i picked the gas, but i wanted the diesel version because of its torque... but i was afraid of the quality of diesel... thanks for the input... much appreciated

The diesel variant is better for the torque, which is a better match for stop/go city driving style. Out of town trips might have heavy loads which is also better done in a diesel.

[ghosthunter]

If I was buying a porshe, I am pretty sure fuel efficiency would be the last on my mind, so I would get the Gas version.

But this is a Porsche large SUV. It's not really in the same category as a Porsche sports car.

[Si 06]

do not underestimate the fun you'll have in a euro diesel suv.

[ChunkyLover]

Hehehe actually the diesel variant of the cayenne is more refined... but isn't the engine only as good as the fuel you put in it...
bad for long trips because there is no premium diesel (V-power diesel only) outside MM?

would you risk it?

[yapoy86]

bosch din ba ang crdi system ng porsche?? ang BMW alam ko bosch eh.. so kung bosch system yan pwede yan mag survive sa diesel natin kasi hyundai / kia diesel bosch system survived

[ChunkyLover]

i dont know... i tried googling it if its a bosch system... cant seem to find any proper results...
pero based sa reviews, premium is required...

pero even if it could survive, it would still affect the performance when the impurities start clogging?

[foresterx]

If I was buying a porshe, I am pretty sure fuel efficiency would be the last on my mind, so I would get the Gas version. For such a high performance engine and our poor diesel quality it can easily spell early engine failure.

i agree with this.

[cripple_rooster]

You should never expect me to buy a gasoline-powered vehicle if I had a diesel option...

i dont know... i tried googling it if its a bosch system... cant seem to find any proper results...
pero based sa reviews, premium is required...

pero even if it could survive, it would still affect the performance when the impurities start clogging?

It is a Bosch system, the engine is essentially the same 3.0 V6 TDI used by Volkswagen/Audi. It's reported to not be suitable to run on biodiesel, but Volkswagen engines are widely used by biodiesel enthusiasts worldwide. Maybe the premium diesel use is enforced because of the fuel line filters and the exhaust aftertreatment, but I bet there are some ways to deal with this issue. Something like the "low quality diesel tune" available for the Mercedes-Benz ML350 CDI.

[niky]

You will have to retune. There's an after-ignition injection pulse used to clear the particulate filters on VW engines (from what I've heard)... thus: though there's very little difference in how good biodiesel burns compared to fossil diesel, the biodiesel acts differently when used as exhaust after-treatment, which can cause lots of problems.

This is what I gather from discussions by US Biodiesel enthusiast groups. This was not a problem on older VW diesels, but thanks to stricter emissions laws, they've added that extra pulse that causes those problems when used in conjunction with Biodiesel.

Not as big a problem as valve recession reported by some users on other common-rail cars... but still... why risk it when there's no need to?

[cripple_rooster]

You will have to retune. There's an after-ignition injection pulse used to clear the particulate filters on VW engines (from what I've heard)... thus: though there's very little difference in how good biodiesel burns compared to fossil diesel, the biodiesel acts differently when used as exhaust after-treatment, which can cause lots of problems.

The so-called "regenerative" function, it doesn't happen always, only when a sensor reports the DPF is becoming too clogged. As far as biodiesel goes, it's reported to generate less particulate matter, so not too much to worry about.

[niky]

It's still a hassle... there's also the worry that injectors pulsing after ignition spray liquid fuel onto the cylinder bores, which washes into the crankcase... which increases the dreaded oil dilution problem inherent with biodiesel.

I think it's Caterpillar that makes engines that don't have this problem... the secondary squirt of fuel comes via a separate injector in the exhaust.

[cripple_rooster]

As far as I know, the secondary squirt of fuel wouls ALWAYS be on the exhaust, to do the regeneration of the DPF. As far as Caterpillar goes, they're going out of the highway engines market. BTW in some countries where Euro-4 or Euro-5 are already enforced, and in the United States where a regulation equivalent to the Euro-6 is already enforced, some vehicles are fitted with the SCR system that sprays an urea-based mix on the exhaust...

[ChunkyLover]

hehehe... would you risk buying a diesel cayenne?... honestly i'm having mixed thoughts about my v6 because of the vibration and engine noise...

[niky]

As far as I know, the secondary squirt of fuel wouls ALWAYS be on the exhaust, to do the regeneration of the DPF. As far as Caterpillar goes, they're going out of the highway engines market. BTW in some countries where Euro-4 or Euro-5 are already enforced, and in the United States where a regulation equivalent to the Euro-6 is already enforced, some vehicles are fitted with the SCR system that sprays an urea-based mix on the exhaust...

The squirt is always on the exhaust stroke... but small passenger car engines don't have an extra injector for this, so they use the in-chamber injectors for this purpose. That's the problem.

[Ry_Tower]

Gas if Porsche para sagad sa tulin hehe