Jump to content

wrx - STI


donnylad
 Share

Recommended Posts

Hi just a general question.

 

Engine and power wise.what is the difference between these? by that I mean I know the wrx is around 220 and the STI around 2

 

What is the difference? is the block, camshafts. pistons etc the same?

 

I think the STI has a different:

turbo
TMIC
injectors
exhaust
ECU

 

Other then that are they the same? Can both engines be tuned to the same bhp using supporting mods?

 

Thanks!

 

 

Link to comment
Share on other sites

It depends on what year sti or wrx and whether it's a uk or jdm version .

Generally the sti has all the above plus better cams ,headgaskets and forged pistons .

So for instance a 04 wrx would probably be at its limit at 360 hp . Whereas a 04 jdm sti would be good for 450 hp, have better brakes and a much stronger 6 speed box.

If it's not broke .....upgrade it 😊

Link to comment
Share on other sites

ohh didnt realise internal etc where different thats great thanks!

 

Mine is a 2001 wrx, but If i can achieve 320-350 bhp I would be very happy. I know they can go to 320 but unsure if they can go to 350 on the standard internals clutch and box.

Link to comment
Share on other sites

It varies greatly from year to year, but a rough list (taken some from above to make it as complete as possible)

 

Different manifold 

some years have no/single/double avcs 

Suspension 

brakes 

pistons are different as said but new age don't have true forged pistons, they have hypereutectic

Interior

DCCD/no DCCD

Bodywork difference, high level spoiler, roof spoiler on hawks.

Wheels

PCD is different on some years

R180 vs R160 rear set (r180 is a stronger diff and different hubs)

Cams

ECU is the same but different map

Exhaust is the same bar a cat removed on the STI

Intercooler

Injectors

turbo

 

So simply put alot beyond the engine as well

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share






×
×
  • Create New...




Forums


News


Membership