I have a 2002 wrx with ppp is it worth fitting induction ( would i need a re map to see any benifit) or just a free flowing panel filter.

 

Not normally

A remap would seee gains with or without Kit on


Your best Value option IMHO

tony

 

Yes you would as it will lean things out normally.

Panel filters are more than efficient for quite high levels.

 

They do sound nice though

 

The standard air box with a decent panel filter is good for 350bhp. Induction kits are known to f up the maf (poor running and loss of power) and make the car run lean. Probably would not bother.

 

thnks for your advice. was what i thought but wanted another opinion

 

I too was pondering about an induction kit a while back but most people on here don't rate them.

As regards the filter,i've got an MY07 STi - would i benefit at all getting a different filter,if so which one ?

 

A cone filter on my classic replacing my uprated panel filter made an extra 8bhp on the rollers.

Dave

 

Green Air Filter will do the job for you - about £30

 

That's normally the case with a Classic but can cause more problems than gains on a newage

IIRC as said above panel filter OK to 360bhp the litchfield T25 is 415bhp and still uses the STD airbox

Tony

 

not quite std as they also have a cold air feed into to it from the front fog light surround.

 

i've fitted an rcm induction kit with enlarged inlet pipe to my 04 STI. I also fitted a cold air feed and am in the process of fitting a heat shield.

I've had no problems and followed the same route and Bob Rawle did with his own car. Bob advised the mods and mapped the car - i thought if it was good enough for him....

 

Cheers,

Is that s direct replacement and is it better than a standard STi filter - any gains ?

 

yep - direct fit (cut the lugs off the filter to make it easier though)

gains ... yes but difficult to quantify exactly how much. Prob 5bhp ish