[Psycho]

I understood the point of preignition where the first time the injector is fired after BDC to reduce the diesel knock and make the engine run smoother but at the same time have also read that the injectors are fired upto 5 times per cycle depending on the fuelling requirements.

This would mean that the pulse duration into the number of times the injectors are fired would be the total pulse duration on each cycle. This would limit the rpms achievable by the engine.Which is what brought me to the conclusion of using larger injectors with the correct ecu could help solve the problem of additional boost and rpms.

This would logically be easier to do on a traditional turbo diesel where one could increase fuelling referenced to boost on the mechanical pump.

Karthik it is about time you came on to this thread and tried to clear up any wrong info put up including by me so that we do not go off on a wrong tangent. Direct injection is a completely new thing for us to understand so easily, please help.