Why isn't the 35d quicker?

[robnitro]

Originally Posted by Best4x4xFAR

Hmmm, I'd always heard it as, "Torque gets you up to speed, horespower keeps you there." And although I know that the Internet is full of misinformation, I didn't have any trouble finding similar statements with the help of Google, so color me confused..



Interesting, I thought I remembered Car and Driver saying the 2014 X5 35d was a tad 'slower' than the Model it replaced..

What diesels offer is more hp down low. Compare dynos between a gas 35i and 35d.



Use the red lines in the dynos below that start lower for stock HP.

2k, 35i 95hp, 35d 150hp
2400rpm 35i 140hp, 35d 190hp
3k 35i 180hp, 35d 220hp
3400 200vs 240hp
Then the diesel tops out around 260
While the 35i hits that around 4600 and keeps climbing above that to around 290hp.

So low end, the diesel feels stronger because it makes more hp down low.
Around town in low to mid rpm, diesel is faster/more responsive.
But in a race, you drive the engine at peak hp at higher revs, where the gas engines shine.


https://chiptuning.ca/public_content...92976de916.jpg


https://chiptuning.ca/public_content...322d7c952c.jpg