172 cup cat

[scotty86d]

Hi, just had a look under the car for the first time and the car seems to be dual split pipework. It's got two large boxes. Is this normal? And is it pretty restrictive?

I was either thinking of a decat as its cheap or the silencer from ktec which at least looks like a cat. Does a warning light show up on removal and is there a way of removing it.....

Is there any real gain from a 182 manifold or is it just chasing a couple of bhp.?

thanks in advance

scotty

 

[rja cup]

Sounds like you have a phase 1 cat fitted rather than a single box cat found on phase 2 172s. I had a decat fitted on my previous 172 cup and the warning light came on after about a year but I think it was linked to me being forced to use 95 octane rather than 97/98 (super unleaded) on 1 occasion. I cleared the fault code and resumed using 97/98 and the light stayed off. My own experience is that the car provides slightly better mpg with the cat removed. I remember the consensus around 2005/2006 was that all 172 owners should rush out and replace their manifolds but now I read that perhaps its not worth all the grief after all - personal choice but its a big job and potential cost for those not able to fit it themselves for very little (if at all noticeable in the real world) gains.

 

[Dan519]

Ph1 cat is excellent. Least restrictive standard option

 

[m4tt274]

Ph1 cat is excellent. Least restrictive standard option

never knew that.

 

[scotty86d]

I might get the decat for a bit then, it only gets V power. The car is a touch "droney" though already, I feel old typing that.