I have a subaru impreza wrx, i am looking at buyin the red sti inlet manifold. do u know if it will increase my performance. people on internet said it does but not sure.

 

Difference between STi and WRX inlet manifold is only color,nothing more...

On some STi inlet manifold are removed TGV,which can increase power(some said 10-15%),but without the remap you will get CEL(Check engine light),due missing TGV.

I would suggest remove TGV on your WRX manifold,fit other parts like bigger turbo(VF30 or VF35),STi pink injectors,STi TMIC or FMIC,Walbro 255lph pump,3port boost solenoid and remap and you should have 330-350bhp


Jura

 

as above, id always been told they are the same except for the colour. you can actualy buy crinkle red paint and do it yourself.

 

We've hit well over 600 bhp on stock intake manifolds.
There is nothing to be gained from changing yours.
If you haven't done it already, a de cat and Ecutek remap will add an easy 40 bhp over standard.

 

Depending on the year , the later manifolds are better for top mount intercooler upgrades ? I think I am right in saying that , was a qestion i was going to ask ?

 

The only thing I can think is that the Spec C had a one-piece manifold with an extra sensor hole for a charge temp sensor........apart from that I'm struggling LOL

Shaun

 

Americans think 2.5 NA manifold is the way to go
Nasioc Intake Manifold Flow Database