2013 Focus 2.0 GDi Sport Intake and exhaust

FourD

Full member
Points
21
From
South Africa
Car
Focus 2.0 GDi Sport
Hey
I'd really appreciate any advice you guys can offer.
My Focus has the 125kw (~170bhp)(at 6000RPM), 200Nm 2.0l Duratec NASP motor.
In the higher revs the power is fantastic. 0-100kph is about 8s. (62 mph).
I'd like a bit more torque, better throttle response times.
Options seem to be quite limited with NASP motors. Will CAI / High flow air filter achieve the desired results? Could I do this as a starting point and do exhaust mods later on or is it futile doing air intake without doing the exhaust as well?
Or do I start with exhaust, or again, will it be futile if I'm not increasing the air intake?

As for the exhaust, 2 inch? 2.5 inch?
Straight pipe? Sports Cat and silencer - both, either or neither?

Can I do this without remapping or chip tuning? The car is still under factory warranty.

Please HELP :confused:
 
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