ph 1 airbox question

[belly60]

Hi ,just a quick question I am just about to swop a crappy induction kit off my 182 and fit a ph 1 airbox ,what diameter are the two caf holes and should i bother fitting the pipes that came with the box on them or get caf pipes off ebay,and where should i locate these,i have just bought standard air filter but thinking of getting itg or pipercross filter all advice would be appreciated thanks belly60

 

[Russ_16v]

Testing my old ph1 on my friends rollers, there was only 1 bhp difference between having the pipes on or off - best was one pipe on one off lol, a plus to leaving them off is fantastic induction noise

 

[DannyR]

I once took off my whole filter and gained 10bhp

 

[Adamm.]

I have one pipe on and one off lol.

 

[davebem]

I think they are 63mm, the standard pipes are a little restrictive as reduce down to something like 40mm

 

[belly60]

i take it the caf's should go behind passenger headlight for coolest part of engine bay ?,is it worth putting in upgrade filter though ? do not want to spend fortunes trying to get best results and bring it back to standard looking engine bay for insurance purposes stealth all the way!!thanks for advice belly60

 

[Russ_16v]

Id not bother with a panel filter - I have tried both an ITG filter and standard Paper one, and swapped between the 2 for about 25,000 miles, with no difference found.

 

[Jamie16v]

I've been running airbox with 2 pipes open, sounds brilliant and much better than a K&N filter I had on previously.

 

[wocka]

I had one off and one on going to the fog, sounded brilliant, this was with the cup racing airbox setup though