Rozz bhai he already has d16 engine... n u engaging to swap d15... lolzzzz bhaijaan Vti main d16 ka engine hota hai... kuch akal se tu kaam lo yar... woh perfomance increase ki baat ker raha hai or tum decrease ker rahe ho....
anyways.... just keep dis engine... do not swap... just install supercharger... turbo ... or NOS....
ACCORDING TO ME SUPERCHARGER IS best choice with original injectors with extra fuel spray directly from Throttle Body whn switch presses for supercharger ... max cost Rs.22000 ...
2nd choice is turbo TDO5 or AR/48 on 6 psi with original injectors for economical drive.... Max cost Rs.25000. . .
Last Choice is Nitrous Kit NOS but wet or direct port..... Cost arround Rs.20000 for Local wet kit ...& Rs.50000 for branded wet kit .... if direct port branded cost Rs. 75000
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According to me Supercharger is best... bcoz it can be turned off & on anytime whnever u want by just switch.... whenever turbo is always on... which eats engine every time..... N NOS is tooo much expensive in refilling... other wise its only 20000 .... but refilling charge is 1500 per refill... very much expencive....
I suggest u for Supercharger.... n Turbo Nos is on my 2nd choice