Quote:
Originally Posted by Old Fox
^ That's interesting, something I'd wanted to try too. The cat-con I guess is in the root of the 'Y' splitter pipe section. Another guess: its an interference fit so removal is the hard way - hammering. The honeycomb can probably be drilled out easily but the sleeve would need an arbor and a mallet.
Nice to know about the reduced heat build-up. Seems relevant though as the gas flows out freer now. Wonder if the drastically reduced back-pressure is accommodated well within the envelope of the ECU. The lambda readings would be quite different without the cat-con.
The frame heating is the result of direct heat transfer from the engine body so I don't think it will be any different with/without the cat-con.
And now that it (the cat-con) is out for good  , will sure like to give the un-constipated '1 a try when we get there on the trip.
Keep us posted on anything unusual post c-c removal. |
OF: Yes the lambda readings change were a concern for me as well. But then the ECU seems to have compensated for the change quite easily. No signs of lean burning or any other negative effects.
As for the cat con.. the honeycomb is glued to the walls of the Y pipe with an adhesive. There was a clear layer of adhesive that I had to scrape off after the major part was removed using the drill.
The benefits are clear, substantial enough to give it a shot on the R1s you guys are riding down. Maybe you can have one without and one with the cat, for clear comparison.
In any case, it should make for a good notes comparison when you guys are down here! Welcome in advance
EDIT: The locations of the cat con is here. So you can cut on either side and bend it out. I had included this image link in my original write up but for some reason it's not getting displayed.
