Changing stock manifold to hks manifold

[adnan evo 9]

If I put on a hks manifold from stock will it
being any performance increase?

Mod already I have#
Hks hi power silent exhaust
Down pipe, 02 sensor housing and straight pipe
Evc 6 boost controller#
Walbro 255 lph#
Zeitronix wide band 02 sensor#

[SicLanEvo]

you put on a hks intake manifold or exhaust mani? both should give you a gain in preformance, but will be better with a bigger turbo. Once again you need a tune also.

[adnan evo 9]

With stock and with evc I am doing 24 psi beyond stock
planning to put on exhaust manifold?

[SicLanEvo]

you mean 24psi, not 24past stock that would be like 40psi.

with a exhaust mani you should spool faster, do you have a link for the manifold? You could probably port and coat the stock one for cheaper if your going to run a stock or stock frame turbo.