burn more fuel

[e300]

Does anyone know how i can get more fuel to the engine as cheaply as possible? Its on a 1997 e300td

 

[e300]

Should have said, the aim is to give it more power and speed

 

[carat 3.6]

The easiest and cheapest is to have the ecu chipped.

 

[SilverSaloon]

didnt you ask this before?

http://www.mbclub.co.uk/forums/engine/108142-w210-e300-performance-upgrades.html

 

[johnsco]

If you want more power and speed, do what we did ...
Kept the E300TD to use as a work-horse.
Bought an E430 avantgarde for power and speed.
You can pick them up at a very good price.

 

[Dieselman]

Oilivier has fitted a resistor to the MAP sensor output and doing similar to the rack position sensor should elicit further gains.

 

[e300]

Everywhere i ring up about ecu remp tells me " its not a car they do" and i did ask before but i was looking to turn the fuelling up specifically, rather than asking for general upgrades this time.

I tryed that resistor but it sent the car into limp mode, maybe i did something wrong, ill give that another go on the weekend.

Whats a 7.0mm element? Would one of those alone increase fuel?

 

[Dieselman]

The elements are the injection pumping elements.

The ECU needs replacement Eprom fitting to load a new map. A member on here did his own recently...just got to think of his name.

 

[e300]

Would swapping the elements increase fuel? Im slightly better at mechanical stuff than i am electrical

 

[Dieselman]

Yes, fitting larger elements will increase fuelling, as would larger injector nozzles, which is what I would do before fitting new pumping elements.

 

[carat 3.6]

Changing the elements will not be cheap, and is not a diy job. Your car will also go into limp mode.

For modest power gains you can chip or remap the ecu, or use risitors in the wiring.

To get big power from these engines you need to fit a highly modified om603 mechanical pump, large turbo, and a non electrical auto or manual gearbox.

Depends how much you want to spend.

 

[Dieselman]

Changing the elements will not be cheap, and is not a diy job. Your car will also go into limp mode.

it won't go into limp mode unless boost goes over the max threshold, which is unlikely as iirc e300 has a problem with low boost anyway.

To get big power from these engines you need to fit a highly modified om603 mechanical pump, large turbo, and a non electrical auto or manual gearbox.

Why do you need to fit a mechanical pump, the electronic one can be used with suitable map.

 

[markjay]

On a general note, replacing the intake air filter with K&N or Pipercross etc, and replacing the rear box with a 'freeflow' one, will allow the engine to breath easier and will provide the oxygen required to burn the extra fuel, plus reduce the resistance at the back so the burnt fuel can be removed more efficiently.

But these modifications by themselves will not produce much result, they should be seen more as bottlenecks that need to be removed in order to allow other modifications (e.g. chipping, or improvement to the intake manifold and cylinder head / valves) to work properly.

 

[Dieselman]

On a general note, replacing the intake air filter with K&N or Pipercross etc, and replacing the rear box with a 'freeflow' one, will allow the engine to breath easier and will provide the oxygen required to burn the extra fuel,

Maybe, depending on how much resistance they were creating. The Cat is likely to cause as much as the silencer and the air filter will be virtually none.

 

[carat 3.6]

it won't go into limp mode unless boost goes over the max threshold, which is unlikely as iirc e300 has a problem with low boost anyway.

Why do you need to fit a mechanical pump, the electronic one can be used with suitable map.

I was assuming that you would need to up the boost pressure to compensate for the extra fuel, thereby triggering limp mode as the ecu thinks the turbo is overboosting. I could be wrong though.


The electric pump is fine for a mild power upgrade, but the sort of power these engines are capable of (400-450hp) will trigger the traction control as soon as you come on boost, and back the power off. Also since the gearbox wont take the power it will need to be changed, but it's electrics are tied in with the fuel pump.

Of course, there is probably a way round all of the above using electronics, but I bet it would be very time consuming. All the big power om606 conversions use the mechanical pump with external adjustment so they can be fine tuned.

I'll probably be proved wrong in minute though.

 

[Dieselman]

A remap could easily deal with all the issues surrounding the fuel pump.