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Decatting VFR1200 2010

4 posts Started 27 Sep 2016 Last recovered post 30 Sep 2016 Wayback Machine snapshot 21 Sep 2017

#1

Hey Guys, new to the Forums, I have had my VFR1200F 2010 since day 1 in 2011. I have done:

- 1/2 gear mod to 3rd gear
- K&N filter
- 2 Bros slip-on with No DB Killer
- Pair Modification
- Power commander 5
- O2 optimizers

Next on the list is the Auto Tune kit and catalytic converter removed.

My question is and I have seen others do it, but how much louder does the exhaust get with the catalytic converted removed and straight pipe in place? I am asking because I had a good talk with Dynojet regarding the Auto Tune kit. If you remove the cat, then you will only need the single O2 sensor Auto tune kit. But If I don't remove the Cat, I will need the dual sensor kit to get readings from both headers. Right now bike is within acceptable noise laws in Edmonton where I live but want to know how much louder will it get by removing the cat. Anyone have any DB numbers or something?

PS. i know there is a real nice write up on this website from others but nobody really mentions how much louder it gets. 

Thanks

John

#2

Get the single sensor DJ auto tune unit. You will not notice any more noise especially with the DB killer removed. I don't have a two Bros. (I have a Leo Vinci) but in my case removing the DB killer only added 2.5 HP and that was over 9000 RPM's. I did a lot of dyno tuning on my bike and we could not get the de-catted pipe without the DB killer to make anything more than 2.5 more HP and that was only in the range above 9000 RPM's.  

#3

No more noise IMO.  If it added any db's they are negligible.  I removed the cat, welded a SS piece in place (Mechanic did it for me), then got my 1200 dyno tuned, and auto tune added.  Pulls like a raped ape. 

End of thread · 4 posts recovered Wayback Machine snapshot 21 Sep 2017