Diesel: More or Less? (SEO Optimized)

Hello everyone,

Okay, so I was thinking today: If my pump is already electronically (chip) set to its maximum flow rate, then I shouldn't be able to inject any more fuel with a 10-cent tuning modification, at least not if the maximum boost pressure is already being reached, right?

Okay, what I mean is that while the amount of diesel injected is higher than before when the turbocharger is still building boost, at maximum boost pressure, the amount of diesel injected is the same as with just the chip. This might explain why my engine smokes when accelerating (with the chip and the additional modification), but the smoke decreases at higher RPMs, becoming hardly more than with just the chip.

Is that possible?

tim27 wrote:

So, I was thinking today that if my pump is already electronically (chip) set to its maximum flow rate, then I shouldn't be able to inject any more fuel with a 10-cent tuning, at least not if the maximum boost pressure is already reached, right?

I don't know what the maximum amount your pump can move per stroke.
But you can't go any faster than the maximum speed, because then the signaling system would be at its limit.
If you still wanted to have it at a price of 10 cents, the error light would probably start blinking.

Quote:

So, what I mean is that the amount of diesel injected, while the turbocharger is still building boost, is higher than before, but at maximum boost pressure, the amount of diesel injected is the same as with just a chip tune...

Oh dear, here we go again with the old issue of sensor value manipulation. Is it really that hard to understand?

As long as the 10c tuning (or a tuning box) is active, more fuel is always injected than what is "intended."
Except when idling, where the speed control takes precedence. And of course, not anymore if the pump is already at its maximum limit without the 10c setting.

The boost pressure doesn't matter at all - because the engine computer doesn't really notice anything from the 10c tuning .

Hi!

I can only confirm what Ulf said.
I also have a chip + 10 cents (switchable) on board.
This provides a small additional boost, bringing the RPM up to approximately 3500-4000.
After a while, you won't notice it anymore.


cu: Marko