Cat removal Y-pipe. Costs, benefits?

[herrman]

Hi,
My understanding is that Lambda sensor on our bikes run on a closed loop which only effects low speed running. I removed mine (after one failed) from the 1200s 40000 miles ago and can't say I have noticed any downside.

Peter.

[conkerman]

That's spot on and better than I could have put it

My current bike has a Remus system with Cat (I think its Remus) withe the O2 sensor still connected. I fitted a K&N a wile ago and the to be honest didn't notice any difference whatsoever.

Setting cable slack, idle screws and TB balance made the biggest difference to mine.

[slparry]

Steve

You may find that if you go up an Alpine pass that the mixture just gets too rich and the ECU can't compensate due to the low air pressure. But as all seems ok without it and up to the Ponderosa then ok.

Heck I live in the "Highest village in Wales"

[SP250]

Permanent high pressure over North Wales then!

[slparry]

Permanent high pressure over North Wales then!

I wish

[conkerman]

Only for the sheep.


Haha, you'll never get me coppah!

[dysondiver]

lambda sensors also do very little when cold . but when hot they lean out the mix ,,, well the one on my supercharged corado did ,,,, it packed in and when cold the car was perfect , as it warmed it ran rough and did about 14 to the gallon , its like driving with the choke fully on ,,,, for those who remember chokes.

[Mister C (Marsh)]

Hi RavenAteMyEyes, I know its a bonkers time of year but... Have you sorted the bike out which if any of the options did you go with and are you happy with the results?

My bike is totally bog standard so I'm quite interested in this topic.

Cheers n regards Marsh