Exhaust Mod Question

[Cleaner]

I saw this video on www.youtube.com and am wondering if it will destroy the bike. Essentially the guy took a drill and drilled a hole inside his exhaust. It completely changed the sound for the better. Will this damage the bike or does it simply violate the emission code?

here is the link

http://www.youtube.com/watch?v=xkGvVpfieRA

[FasDuc]

As for hurting the bike you'll be fine. Modern fuel injected bikes run a closed loop system using an O2 sensor to maintain the proper A/F ratio......to a point. The engine will spin up a bit quicker thus giving you a little more HP plus you get that nice throaty sound. But, if you really want the best exhaust sound you should just sell the CBR and buy a Ducati:D

[r6allstar]

dont see why it would hurt.. might be better to do this along with adding a power commander to adjust A/F ratio

[FasDuc]

dont see why it would hurt.. might be better to do this along with adding a power commander to adjust A/F ratio

The stock ECU will do that automatically with the lambda(oxygen) sensor.

[r1crusher]

..... But, if you really want the best exhaust sound you should just sell the CBR and buy a Ducati:D

And once you buy the Ducati....sell that and buy two GSXR1000's. :D

[NinjaNick]

Cleaner, my buddy I work with did that to his SV1000 a few years ago and he loves it. I think it's retarded though because he should just purchase a new one a long time ago, but it's his choice I guess.

[FasDuc]

And once you buy the Ducati....sell that and buy two GSXR1000's. :D

What's the second one for, parts?

[Cleaner]

Cleaner, my buddy I work with did that to his SV1000 a few years ago and he loves it. I think it's retarded though because he should just purchase a new one a long time ago, but it's his choice I guess.

Well, I just ordered a Jardine exhaust slip-on and it cost a bit under $500. This mod you can do for under $50. If it won't damage my bike and adds a few horses, I don't see any reason NOT to do it. That way, instead of spending my money on an exhaust, I'll spend it on a PC III.

Cleaner

[Dweezel]

I pretty much did that with my bike. I took a hole saw, put it over the inner pipe (Stock 'Busa exhaust has an inner actual pipe, and an outer stainless cover) and sawed through the case, then I took the plasma, cut the pipe off below the plate, and shoved that pipe off to the side with a crow bar. no you can see straight through the can. Allot of people like it, it's very aggressive without being obnoxiously loud.

[4DAIVI PAI2K5]

i did it to both of my 675's never had any problems. just got a deeper sound!

[RC51 John]

As for hurting the bike you'll be fine. Modern fuel injected bikes run a closed loop system using an O2 sensor to maintain the proper A/F ratio......to a point. The engine will spin up a bit quicker thus giving you a little more HP plus you get that nice throaty sound. But, if you really want the best exhaust sound you should just sell the CBR and buy a Ducati:D

Or an RC51.

[Todd#43]

As for hurting the bike you'll be fine. Modern fuel injected bikes run a closed loop system using an O2 sensor to maintain the proper A/F ratio......to a point. The engine will spin up a bit quicker thus giving you a little more HP plus you get that nice throaty sound. But, if you really want the best exhaust sound you should just sell the CBR and buy a Ducati:D

O2 Sensors on bikes?? Ummmm....besides the BMW's and Buell's, which bikes would those be exactly?

[Benyen Soljax]

Or an RC51.

well more like 2 or 3 RCs for the price of the duck.

[Cleaner]

Do they even make RCs anymore?

[kawi kid]

people have been knocking the guts out of stock mufflers for ages

[NinjaNick]

I dug the honeycomb out of my stock exhaust when I had my ZX12.

[FasDuc]

O2 Sensors on bikes?? Ummmm....besides the BMW's and Buell's, which bikes would those be exactly?

Sorry, I'm used to Duc's. I researched it further and found that only the European CBR's use O2 sensors(see pic). So he's right, your bike(and i guess most US sold Jap bikes) are running open loop systems.

[NinjaNick]

Or an RC51.

Mmmmmmmmm....RC51 with SATO exhaust is the sweetest sound I've EVER heard when riding. I fell in love with that set-up on that bike 2 years ago when I rode the twisties with this 60year old corner carver from Brookville, down in N.E Ohio though the hills. That sucker was music to my ears.

[Blitzburgh]

The new 08 Busa has an O2 senser closed loop and I pretty sure the GSXR1Ks do also...

Back to the question.. I would tell anyone wanting to buy slip-ons to do this mod, save your $$$, then buy the full system. The cost difference between slip-ons and a full system can actually be minimal..