2.5 inlet and injectors on an M20B20

Post Sat Oct 03, 2009 11:41 pm

Hi all, i've heard somewhere that there are gains to be had if I put the inlet, injectors and throttle body off a 2.5, I can gain some performance.

Is this true??

Wouldn't I need to remap too?

Post Thu Oct 08, 2009 1:41 pm

u can but you will need to open the head up a little. as the inlets are smaller, easey job so I have been told. All this and a re-map will make a diffrence.

also a good cold air induction kit work well.

Post Fri Oct 09, 2009 3:55 pm

Rosco320i wrote:Hi all, i've heard somewhere that there are gains to be had if I put the inlet, injectors and throttle body off a 2.5, I can gain some performance.

Is this true??

Wouldn't I need to remap too?

The inlet manifold and throttle body is a popular swap out of the box. Once you start down the route of bigger injectors and other work you'll need to map for that.

Post Sat Oct 10, 2009 1:34 pm

Nice one thanks for the info, I'll get on it.

As far as opening the head up, is this something I can do myself? can it be done with the head on the car?

Cheeers

Post Sat Oct 10, 2009 2:29 pm

You mean porting the head?

That would be best left to the professionals. When you get the head reconditioned the shop will take care of that for you.

Post Tue Oct 13, 2009 10:59 am

You could also fit a 325 exhaust system, I'm fitting one so will let you know.