2006 Yamaha R1 Race Baffle and no catalytic converter

A & R race baffle install and gutted cat. Before and after exhaust sound.

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[Haveaniceday2008]

I dont mean to sound stupid...

Im not an expert on bikes, but why have you taken the cat. convertor out, i thought that was to stop pollution etc... Im not Green peace or anything, dont worry :)

Does it add performance, better/ deeper sound??

[stylin7480]

The other 49 states model bikes don't have catalytic converters. CA has smog regulations. Not having it frees up the flow of exhaust so in theory it does make a performance difference and in my opinion, adds to the sound.

[SmoodLee]

how did you take the ribbets off and put them back on?

[stylin7480]

you have to drill it out, then you put new ones on with a rivet gun.

[gayrabbit]

can i take out just the cat and it be louder

[stylin7480]

no, the baffle is what makes the deep sound

[101beeouch]

i woke my neighbours up, watching this video.

[Module79L]

Since this bike has fuel injection and an electronic management system which the cat is a part of, does the fuel injection work properly when the cat is removed? I mean, how does the overall engine management works without the information supplied by the lambda probe in the cat?

[NTPsale]

It will run.....richer not leaner..... Dillon read what ya wrote....more air flow means it will dump more fuel....

That will be ok it's when u run leaner u have to worry about cooking a cylinder. Running richer will just hurt gas mileage and cause backfire due to spent fuel burning off....which will add a nice flame outta the pipes.

[Dillon123987]

And if your bike has a lambda in the cat u need to find a nut your lambda can screw into and drill a hole in the midpipe and weld that nut onto the midpipe but if u used the stock midpipe and removed the cat u should b able to just screw your lambda right back in there

[Dillon123987]

Btw map it man it's not good for the rings to run it that lean ur gonna destroy ur bikes power over time riding it that way and u will get a longer better power curve after mapping cuz uve totally screwed up ur air to fuel ratio I mean think about it now u got more air flowing thru but what's tellin ur bike to dump more fuel without the proper map

[Dillon123987]

When u remove the cat it's gonna run a little leaner from more air flowing through and that will create more heat in the cylinders if u don't put a richer air to fuel map but as far as the guy saying doesn't it help keep water out of there a cat makes water when exhaust flows through it that's why when u stand behind a bike with a cat that just started with a cold motor it spits on u bit once it's warm it turns to steam and u won't even know its making water

[r1rox]

Put them in my 05 r1 and sounds identical to yours. I did notice though it runs rich and a power commander 5 helps with the popping you get on your decelleration. Also I took out my aic and installed smog block offs. All that gave me monstrous torque, throttle response, and huge low end power gains!

[SM3GMAxD]

how much did that set you back?

Sweet sound and ride.

[Demrush]

That sounds heavenly demonic.

[ermigeorge]

@stylin7480 

hey mate have you lost top speed.Or have you lost some of your hp ?

[NateSVT]

Nice vid man. Sounds sick. I might be buying an R1 soon and if it has stock exhaust on it I will probably end up doing this to save some money. You should take some fly-by/driving vids.

[Jon19277]

Just curious. Doesn't that cat in y-pipe help stop water from getting in?