2.0L stroker kit

[Plautos]

lol
boost cut ?

how is a factory ecu meant to map out an increase in airflow ?

The increased volume is small, the ECU will probably correct the AFR as the new air flow will be within their margins of correction.

[Jmac]

I agree with Bug racer there, you would have to at a minimum get a customised ecu flash. I mentioned the 4 bar reg , ill stick with that ( was late post last night) should have mentioned injectors with the reg , ah well.
Seems a lot when you consider what you can do with the 1.8 and a nice turbo, and of course clutch etc, again the list can go on and on.
Cheers
Jmac

[xtturbo]

From an engineering standpoint, it is only of very limited use to think of an engine in terms of capacity. As we all know, different engines produce vastly different amounts of power even at the same capacity. There is one common theme however:

The more air and fuel packed into each combustion cycle = the more power made.

It is not important how that extra air and fuel is finds its way into the engine, just that it does. There are various ways of doing this: forced induction, different cams, different displacements etc. Each of which have their advantages.

Consider the following math:

All things the same except capacity:
2.0 / 1.8 * 100 = 111%
Simplistically, a stroker will therefore consume 11% more fuel.

Now, consider if we increase fuel delivery via upping the boost.
Factory 1.8:
10 PSI Boost = intake pressure of 24.7 psi (you have to add in atmo)
16 PSI Boost = intake pressure of 30.7 psi

30.7 / 24.7 * 100 = 124%
Simplistically, upping the boost will consume 24% more fuel


As the above logic has implied, a simple boost upgrade will deliver nearly double the additional power of a stroker kit. This is where things get more complicated - upping the boost changes the engine in different ways than increasing the displacement... specifically in terms of torque output x rpm.


That said, from an engineering perspective, it is safe to conclude that the additional FUEL requirements are not beyond the means of the factory computer.

[mikepologti]

getting extra power out of the 1.8t was never a problem. evan if you did make this work and turn your ride into a 2l beast at the end of the day, you still have the same problem....traction.