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2.5 inlet and injectors on an M20B20
Posted: Sat Oct 03, 2009 11:41 pm
by Rosco320i
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?
Re: 2.5 inlet and injectors on an M20B20
Posted: Thu Oct 08, 2009 1:41 pm
by bmw1066
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.
Re: 2.5 inlet and injectors on an M20B20
Posted: Fri Oct 09, 2009 3:55 pm
by AlpineAde
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.
Re: 2.5 inlet and injectors on an M20B20
Posted: Sat Oct 10, 2009 1:34 pm
by Rosco320i
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
Posted: Sat Oct 10, 2009 2:29 pm
by AlpineAde
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.
Re:
Posted: Tue Oct 13, 2009 10:59 am
by bmw1066
You could also fit a 325 exhaust system, I'm fitting one so will let you know.
